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Pass4sure CCNA 640-802 2.85
http://rapidshare.com/files/72938372/cnccps.rar

Pass4sure BSCI 642-901 2.85
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TestInside 640-802 v13 v3.21[192Q]
http://rapidshare.com/files/72928543/cntett.rar

Cisco CCNA Study Guide Exam 640-802 6th Edition
http://rapidshare.com/files/56218154/ccsgeses.rar



CCNA ICND1 Official Exam Certification Guide
http://rapidshare.com/files/55674115/cicond.rar

CCNA ICND2 Official Exam Certification Guide
http://rapidshare.com/files/55674886/cictnd.rar

ICND1 Official Exam Certification Guide, 2nd Ed CD Image
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Springer Optical Burst Switched Networks Nov 2004
http://rapidshare.com/files/72264892/cnsobsn.rar

BSCI 642-901 V5.0 Student Lab Manual
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Testking 640-802 V9 676q
http://rapidshare.com/files/70012958/cntkn.rar

Cisco.Press.CCNP.Practical.Studies.Remote.Access.c hm
Cisco.Press.CCNP.Practical.Studies.Routing.pdf
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Cisco.Press.CCNP.Practical.Studies.Troubleshooting .pdf
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BSCI v5, ISCW v5 CNAP Curriculum
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CCNA Version 4.0 Discovery Networking Home Small Businesses
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http://rapidshare.com/files/65911257/cnenfd.rar

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CCNA V4.0

* CCNA lab
* CCNA4U.TK Update dayly(hot news)
* All answer CCNA V4.0 (CCNA4U.TK)
* CCNA4 v4.0 download(updated 24/10/2008)
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* CCNALabGuide
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* Download do Packet Tracer 5.0
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* CCNA 2
* CCNA 3 No answer with images
* 640 802 CCNA Recommend Readings
* Cisco Press ICND2 Feb 2008
* CCNA Security Official Exam Certification Guide 2008
* CCNA Quick Reference Sheets (Digital Short Cut)CCNA Quick Reference Sheets (Digital Short Cut)

CCNA-V4-S4- Final

yhenex.blogspot.com
94%

1. A technician has been asked to run Cisco SDM one-step lockdown on the router of a customer. What will be the result of this process?

Traffic is only forwarded from SDM-trusted Cisco routers.

Security testing is performed and the results are saved as a text file stored in NVRAM.

**The router is tested for potential security problems and any necessary changes are made.

All traffic entering the router is quarantined and checked for viruses before being forwarded.



2. Refer to the exhibit. A network administrator is trying to configure a router to use SDM but it is not functioning correctly. What could be the problem?

The username and password are not configured correctly.

The authentication method is not configured correctly.

The HTTP timeout policy is not configured correctly.

**The vtys are not configured correctly.



3. Refer to the exhibit. How is the TCP/IP configuration information specified by the default-router and dns-server commands made available?

The TCP/IP information is forwarded to a 10.0.1.3 to be supplied to DHCP clients.

**The TCP/IP information is used by DHCP clients that are configured to request a configuration from R1.

The TCP/IP information is supplied to any DHCP client on the network connected to the FastEthernet 0/0 interface of R1.

The TCP/IP information is applied to each packet that enters R1 through the FastEthernet 0/0 interface that are hosts on the 10.0.1.0 /24 network except packets from addresses 10.0.1.2, 10.0.1.16, and 10.0.1.254.



4. What is a major characteristic of a worm?

malicious software that copies itself into other executable programs

tricks users into running the infected software

a set of computer instructions that lies dormant until triggered by a specific event

**exploits vulnerabilities with the intent of propagating itself across a network



5. Refer to the exhibit. What can be concluded from the exhibited output of the debug ip nat command?

The 10.1.1.225 host is exchanging packets with the 192.168.0.10 host.

The native 10.1.200.254 address is being translated to 192.168.0.10.

**The 192.168.0.0/24 network is the inside network.

Port address translation is in effect.



6. A technician is talking to a colleague at a rival company and comparing DSL transfer rates between the two companies. Both companies are in the same city, use the same service provider, and have the same rate/service plan. What is the explanation for why Company A reports higher download speeds than Company B?

Company B has a higher volume of POTS voice traffic than Company A.

Company B shares the conection to the DSLAM with more clients than Company A.

Company A only uses microfilters on branch locations.

**Company A is closer to the service provider.




7. Refer to the exhibit. Which statement correctly describes how Router1 processes an FTP request entering interface s0/0/0, destined for an FTP server at IP address 192.168.1.5?

It matches the incoming packet to the access-list 201 permit any any statement and allows the packet into the router.
It reaches the end of ACL 101 without matching a condition and drops the packet because there is no access-list 101 permit any any statement.

**It matches the incoming packet to the access-list 101 permit ip any 192.168.1.0 0.0.0.255 statement, ignores the remaining statements in ACL 101, and allows the packet into the router.

It matches the incoming packet to the access-list 201 deny icmp 192.168.1.0 0.0.0.255 any statement, continues comparing the packet to the remaining statements in ACL 201 to ensure that no subsequent statements allow FTP, and then drops the packet.


8. Refer to the exhibit. Which two conclusions can be drawn from the output shown? (Choose two.)

This network is experiencing congestion.

**The Frame Relay connection is in the process of negotiation.
Data is not flowing in this network.

**The network is discarding eligible packets.

The DLCI is globally significant.



9. A system administrator must provide Internet connectivity for ten hosts in a small remote office. The ISP has assigned two public IP addresses to this remote office. How can the system administrator configure the router to provide Internet access to all ten users at the same time?

Configure DHCP and static NAT.

Configure dynamic NAT for ten users.

Configure static NAT for all ten users.

**Configure dynamic NAT with overload.



10. Refer to the exhibit. Company ABC expanded its business and recently opened a new branch office in another country. IPv6 addresses have been used for the company network. The data servers Server1 and Server2 run applications which require end-to-end functionality, with unmodified packets that are forwarded from the source to the destination. The edge routers R1 and R2 support dual stack configuration. What solution should be deployed at the edge of the company network in order to successfully interconnect both offices?

a new WAN service supporting only IPv6

NAT overload to map inside IPv6 addresses to outside IPv4 address

**a manually configured IPv6 tunnel between the edge routers R1 and R2

static NAT to map inside IPv6 addresses of the servers to an outside IPv4 address and dynamic NAT for the rest of the inside IPv6 addresses



11. Refer to the exhibit. You are a network administrator who has been tasked with completing the Frame Relay topology that interconnects two remote sites. How should the point-to-point subinterfaces be configured on HQ to complete the topology?

HQ(config-subif)#frame-relay interface-dlci 103 on Serial 0/0/0.1
HQ(config-subif)#frame-relay interface-dlci 203 on Serial 0/0/0.2

**HQ(config-subif)#frame-relay interface-dlci 301 on Serial 0/0/0.1
HQ(config-subif)# frame-relay interface-dlci 302 on Serial 0/0/0.2

HQ(config-subif)#frame-relay map ip 172.16.1.1 103 broadcast on Serial 0/0/0.1
HQ(config-subif)#frame-relay map ip 172.16.2.2 203 broadcast on Serial 0/0/0.2

HQ(config-subif)#frame-relay map ip 172.16.1.1 301 broadcast on Serial 0/0/0.1
HQ(config-subif)#frame-relay map ip 172.16.2.2 302 broadcast on Serial 0/0/0.2



12. An established company has recently transitioned from outsourced LAN support to a completely in-house staff. The outsourcing company is no longer in business, so no records are available. There are many user complaints about application speed and availability. What two considerations apply to this situation? (Choose two.)

A network utilization baseline should quickly reveal application availability.

A period of 24 to 48 hours should provide a sufficient baseline to track normal network activity.

It is easier to start with monitoring all available data inputs on application servers, and then fine-tune to fewer variables along the way.

The initial baseline results have little relevance to current values after the network has been modified or grown in usage.

**When it is practical, network administrators should attempt to automate the collection of performance data and stay away from manual collection.

**Creating a network baseline data helps determine device thresholds for alerting.


13. Which combination of Layer 2 protocol and authentication should be used to establish a link without sending authentication information in plain text between a Cisco and a non-Cisco router?

PPP with PAP

**PPP with CHAP

HDLC with PAP

HDLC with CHAP



14. An administrator is unable to receive e-mail. While troubleshooting the problem, the administrator is able to ping the local mail server IP address successfully from a remote network and can successfully resolve the mail server name to an IP address via the use of the nslookup command. At what OSI layer is the problem most likely to be found?

physical layer

data link layer

network layer

**application layer



15. When configuring a Frame Relay connection, what are two instances when a static Frame Relay map should be used? (Choose two.)

when the remote router is a non-Cisco router

**when the remote router does not support Inverse ARP

when the local router is using IOS Release 11.1 or earlier

**when broadcast traffic and multicast traffic over the PVC must be controlled

when globally significant rather than locally significant DLCIs are being used

16. Which three statements are true about creating and applying access lists? (Choose three.)

Access list entries should filter in the order from general to specific.

**One access list per port per protocol per direction is permitted.

Standard ACLs should be applied closest to the source while extended ACLs should be applied closest to the destination.

**There is an implicit deny at the end of all access lists.

**Statements are processed sequentially from top to bottom until a match is found.

The inbound keyword refers to traffic entering the network from the router interface where the ACL is applied.


17. Which technology would provide the highest bandwidth connections between company sites at the lowest cost?

**broadband Internet site-to-site VPN connections

satellite based network connections

dedicated point-to-point circuits

Frame Relay PVCs



18. Refer to the exhibit. This serial interface is not functioning correctly. Based on the output shown, what is the most likely cause?

improper LMI type

interface reset

**PPP negotiation failure

unplugged cable



19. What three statements describe the roles of devices in a WAN? (Choose three.)

**A CSU/DSU terminates a digital local loop.

A modem terminates a digital local loop.

A CSU/DSU terminates an analog local loop.

**A modem terminates an analog local loop.

**A router is commonly considered a DTE device.

A router is commonly considered a DCE device.



20. A network administrator is instructing a technician on best practices for applying ACLs. Which suggestion should the administrator provide?

Named ACLs are less efficient than numbered ACLs.

Standard ACLs should be applied closest to the core layer.

ACLs applied to outbound interfaces are the most efficient.

**Extended ACLs should be applied closest to the source that is specified by the ACL.



21. Refer to the exhibit. Branch A has a Cisco router. Branch B has a non-Cisco router set for IETF encapsulation. After the commands shown are entered, R2 and R3 fail to establish the PVC. The R2 LMI is Cisco, and the R3 LMI is ANSI. The LMI is successfully established at both locations. Why is the PVC failing?

The PVC to R3 must be point-to-point.

LMI types must match on each end of a PVC.

**The ietf parameter is missing from the frame-relay map ip 10.10.10.3 203 command.

The PVCs at R2 use different encapsulation types. A single port can only support one encapsulation type.



22. Which statement is true regarding wildcard masks?

The wildcard mask and subnet mask perform the same function.

The wildcard mask is always the inverse of the subnet mask.

**A "0" in the wildcard mask identifies IP address bits that must be checked.

A "1" in the wildcard mask identifies a network or subnet bit.



23. Refer to the exhibit. What is placed in the address field in the header of a frame that will travel from the DC office of ABC Company to the Orlando office?

MAC address of the Orlando router

MAC address of the DC router

192.168.1.25

192.168.1.26

DLCI 100
**DLCI 200



24 .A company is looking for a WAN solution to connect its headquarters site with four remote sites. What advantage would dedicated leased lines provide to the customer compared to a shared Frame Relay solution?

lower cost

lower latency and jitter

**variable bandwidth capacity

fewer physical router interfaces



25. Refer to the exhibit. RIPv2 has been configured on all routers in the network. Routers R1 and R3 do not receive RIP routing updates. On the basis of the provided configuration, what should be enabled on router R2 to remedy the problem?

proxy ARP

CDP updates

SNMP services

**RIP authentication



26. What are the symptoms when the s0/0/0 interface on a router is attached to an operational CSU/DSU that is generating a clock signal, but the far end router on the point-to-point link has not been activated?

show controllers indicates cable type DCE V.35. show interfaces s0/0/0 indicates serial down, line protocol down.

show controllers indicates cable type DCE V.35. show interfaces s0/0/0 indicates serial up, line protocol down.

**show controllers indicates cable type DTE V.35. show interfaces s0/0/0 indicates serial up, line protocol down.

show controllers indicates cable type DTE V.35. show interfaces s0/0/0 indicates serial down, line protocol down.



27. Which statement about a VPN is true?

**VPN link establishment and maintenance is provided by LCP.

DLCI addresses are used to identify each end of the VPN tunnel.

VPNs use virtual Layer 3 connections that are routed through the Internet.

Only IP packets can be encapsulated by a VPN for tunneling through the Internet.



28. Refer to the exhibit. Partial results of the show access-lists and show ip interface FastEthernet 0/1 commands for router R3 are shown. There are no other ACLs in effect. Host A is unable to telnet to host B. Which action will correct the problem but still restrict other traffic between the two networks?

Apply the ACL in the inbound direction.

Apply the ACL on the FastEthernet 0/0 interface.

**Reverse the order of the TCP protocol statements in the ACL.

Modify the second entry in the list to permit tcp host 192.168.10.10 any eq telnet .



29. Refer to the exhibit. What happens if the network administrator issues the commands shown when an ACL called Managers already exists on the router?

The commands overwrite the existing Managers ACL.

**The commands are added at the end of the existing Managers ACL.

The network administrator receives an error stating that the ACL already exists.

The commands will create a duplicate Managers ACL containing only the new commands being entered.



30. Which three statements accurately describe a security policy? (Choose three.)

**It creates a basis for legal action if necessary.

**It defines a process for managing security violations.

**It defines acceptable and unacceptable use of network resources.

The remote access policy is a component of the security policy that governs acceptable use of e-mail systems.

It is kept private from users to prevent the possibility of circumventing security measures.

It provides step-by-step procedures to harden routers and other network devices.


31. Refer to the exhibit. The link between the CTRL and BR_1 routers is configured as shown in the exhibit. Why are the routers unable to establish a PPP session?

The clock rate must be 56000.

**The usernames are misconfigured.

The IP addresses are on different subnets.

The clock rate is configured on the wrong end of the link.

The CHAP passwords must be different on the two routers.

Interface serial 0/0/0 on CTRL must connect to interface serial 0/0/1 on BR_1.



32. What effect would the Router1(config-ext-nacl)# permit tcp 172.16.4.0 0.0.0.255 any eq www command have when implemented inbound on the f0/0 interface?

All TCP traffic is permitted, and all other traffic is denied.

The command is rejected by the router because it is incomplete.

All traffic from 172.16.4.0/24 is permitted anywhere on any port.

**Traffic originating from 172.16.4.0/24 is permitted to all TCP port 80 destinations.



33. What can a network administrator do to recover from a lost router password?

use the copy tftp: flash: command

boot the router to bootROM mode and enter the b command to load the IOS manually

telnet from another router and issue the show running-config command to view the password

**boot the router to ROM monitor mode and configure the router to ignore the startup configuration when it initializes



34. A router in a Frame Relay network needs to forward a message received from a host. What two methods does the router use to identify the correct VC to forward the message? (Choose two.)

The router forwards the frame to all ports in the network and learns the address from the reply frame.

The destination host IP address is embedded in the DLCI.

The router searches Inverse ARP tables for maps of DLCIs to IP addresses.

**A table of static mappings can be searched.

The router broadcasts a request for the required IP address.



35. Refer to the exhibit. From the output of the show interface commands, at which OSI layer is a fault indicated?

application

transport

network

**data link

physical



36. Refer to the exhibit. The network administrator creates a standard access control list to prohibit traffic from the 192.168.1.0/24 network from reaching the 192.168.2.0/24 network while still permitting Internet access for all networks. On which router interface and in which direction should it be applied?

interface fa0/0/0, inbound

interface fa0/0/0, outbound

interface fa0/0/1, inbound

**interface fa0/0/1, outbound



37. Refer to the exhibit. The SSH connections between the remote user and the server are failing. The correct configuration of NAT has been verified. What is the most likely cause of the problem?

SSH is unable to pass through NAT.

**There are incorrect access control list entries.

The access list has the incorrect port number for SSH.

The ip helper command is required on S0/0/0 to allow inbound connections.



38. Refer to the exhibit. A technician issues the show interface s0/0/0 command on R1 while troubleshooting a network problem. What two conclusions can be determined by from the output shown? (Choose two.)

**The bandwidth has been set to the value of a T1 line.

Encapsulation should of this inteface be changed to PPP.

**There is no failure indicated in an OSI Layer 1 or Layer 2.

The physical connection between the two routers has failed.

The IP address of S0/0 is invalid, given the subnet mask being used.



39. Refer to the exhibit. A packet is being sent from Host A to Host B through the VPN tunnel between R1 and R3. When the packet first arrives at R3, what are the source and destination IP addresses of the packet?

Source 192.168.1.2 - Destination 192.168.4.2

Source 192.168.3.1 - Destination 192.168.3.2

**Source 192.168.2.1 - Destination 192.168.3.2

Source 192.168.3.1 - Destination 192.168.4.2



40. An administrator is configuring a dual stack router with IPv6 and IPv4 using RIPng. The administrator receives an error message when trying to enter the IPv4 routes into RIPng. What is the cause of the problem?

RIPng is incompatible with dual-stack technology.

All interfaces have been configured with the incorrect IPv4 addresses.

**RIPv1 or RIPv2 needs to be configured in addition to RIPng to successfully use IPv4.

When IPv4 and IPv6 are configured on the same interface, all IPv4 addresses are shut down in favor of the newer technology.



41. Which wireless solution can provide mobile users with non line-of-sight broadband Internet access at speeds comparable to DSL or cable?

Wi-Fi

WiMAX

**satellite

Metro Ethernet



42. A network administrator added two switches and a new VLAN over the past weekend. How can the administrator determine if the additions and changes improved performance and availability on the company intranet?

**Perform a baseline test and compare the current values to values that were obtained in previous weeks.

Interview departmental secretaries and determine if they think load time for web pages is improved.

Compare the hit counts on the company web server for the current week to the values that were recorded from previous weeks.

Performance on the intranet can be determined by monitoring load times of company web pages from remote sites.



43. Refer to the exhibit. The network administrator is adding R1 to an existing network. As a part of the corporate IT procedures, the administrator attempts to back up the router Cisco IOS software of R1 and receives the output shown. The network administrator then attempts unsuccessfully to ping the TFTP server from the console session. What should be done next to isolate this problem?

From R2, validate that interface Fa0/0 is operational.

From the TFTP server, verify that the software on the TFTP server is operational.

From the TFTP server, confirm there is enough room on the TFTP server for the Cisco IOS software.
**From the console session, make sure that R1 has a route to the network where the TFTP server resides.



44. What functionality do access control lists provide when implementing dynamic NAT on a Cisco router?

**defines which addresses can be translated

defines which addresses are assigned to a NAT pool

defines which addresses are allowed out of the router

defines which addresses can be accessed from the inside network



45. A network administrator is working with an applications team to fix a problem that a server based application is having with response time. The administrator has examined the network portions of the data path and identified several possible problem areas. The applications team has simultaneously identified potential issues with the current release of software. The network administrator begins addressing the network issues while the applications team implements software patches.

Which statement applies to this situation?

Changes to the network will reveal problems that are caused by the new patches.

**Scheduling will be more difficult if the network and software teams work independently.

It will be difficult to isolate the problem if two teams are implementing changes independently.

Results from changes will be easier to reconcile and document if each team works in isolation.


46. Refer to the exhibit. R1 is performing NAT overload for the 10.1.1.0/24 inside network. Host A has sent a packet to the web server. What is the destination IP address of the return packet from the web server?

10.1.1.2:1234

172.30.20.1:1234

**172.30.20.1:3333

192.168.1.2:80



47. Which three guidelines would help contribute to creating a strong password policy? (Choose three.)

Once a good password is created, do not change it.

**Deliberately misspell words when creating passwords.

**Create passwords that are at least 8 characters in length.

**Use combinations of upper case, lower case, and special characters.

Write passwords in locations that can be easily retrieved to avoid being locked out.

Use long words found in the dictionary to make passwords that are easy to remember.



48. What will be the result of adding the command ip dhcp excluded-address 172.16.4.1 172.16.4.5 to the configuration of a local router that has been configured as a DHCP server?

Traffic that is destined for 172.16.4.1 and 172.16.4.5 will be dropped by the router.

Traffic will not be routed from clients with addresses between 172.16.4.1 and 172.16.4.5.

**The DHCP server function of the router will not issue the addresses between 172.16.4.1 and 172.16.4.5.

The router will ignore all traffic that comes from the DHCP servers with addresses 172.16.4.1 and 172.16.4.5.



49. Which two statements are true about IPv6? (Choose two.)

**Security options are build into IPv6.

IPv6 addresses require less router overhead to process.

IPv6 can only be configured on an interface that does not have IPv4 on it.

There is no way to translate between IPv4 addresses and IPv6 addresses.

**When enabled on a router, IPv6 can automatically configure link-local IPv6 addresses on all interfaces.



50. Refer to the exhibit. A network administrator has issued the commands that are shown on Router1 and Router2. A later review of the routing tables reveals that neither router is learning the LAN network of the neighbor router. What is most likely the problem with the RIPng configuration?

The serial interfaces are in different subnets.

**The RIPng process is not enabled on interfaces.

The RIPng network command is not configured.

The RIPng processes do not match between Router1 and Router2.



51. At what physical location does the responsibilty for a WAN connection change from the user to the service provider?

demilitarized zone (DMZ)

**demarcation point

local loop

cloud



52. Refer to the exhibit. A host connected to Fa0/0 is unable to acquire an IP address from this DHCP server. The output of the debug ip dhcp server command shows "DHCPD: there is no address pool for 192.168.1.1". What is the problem?

The 192.168.1.1 address has not been excluded from the DHCP pool.

**The pool of addresses for the 192Network pool is incorrect.

The default router for the 192Network pool is incorrect.

The 192.168.1.1 address is already configured on Fa0/0.



53. Which three functions are provided by the Local Management Interface used in Frame Relay networks? (Choose three.)

exchange information about the status of virtual circuits

map DLCIs to network addresses

**provide flow control

provide error notification

provide congestion notification

send keepalive packets to verify operation of the PVC



54. Which three items are LCP options that can be configured for PPP? (Choose three.)

**CHAP

**Stacker

IPCP

CDPCP

**ultilink



55. What are two main components of data confidentiality? (Choose two.)

checksum

digital certificates

**encapsulation

**encryption

yhenex.blogspot.com

CCNA lab

CCNA CERTIFICATION

The Cisco CCNA network associate certification validates the ability to install, configure, operate, and troubleshoot medium-size routed and switched networks, including implementation and verification of connections to remote sites in a WAN. This new curriculum includes basic mitigation of security threats, introduction to wireless networking concepts and terminology, and performance-based skills. This new curriculum also includes (but is not limited to) the use of these protocols: IP, Enhanced Interior Gateway Routing Protocol (EIGRP), Serial Line Interface Protocol Frame Relay, Routing Information Protocol Version 2 (RIPv2),VLANs, Ethernet, access control lists (ACLs)
* 1 Console Login
* 2 Router Configuration
* 3 Examine the Router
* 4 Copy to a TFTP server
* 5 Copy from TFTP server
* 6a Clear the backup config
* 6b Saving the backup configuration
* 7 Copy to NVRAM
* 8 Initial router configuration
* 9 Initial Switch Configuration
* 10 RIP routing
* 11 IGRP routing
* 12 Create Accesslist
* 13 IPX Access List Security
* 14 IPX router configuration
* 15 IPX SAP filtering
* 16 Limitting VTY address
* 17 Load 2600 OS
* 18 Navigating the IOS
* 19 Password recovery
* 20 Telnet to a remote Router

CCNA VTP SIM QUESTION

(Updated from lastest CCNA exam on 09-10-2008)

Question:

This task requires you to use the CLI of Sw-AC3 to answer five multiple-choice questions. This does not require any configuration.
To answer the multiple-choice questions, click on the numbered boxes in the right panel.
There are five multiple-choice questions with this task. Be sure to answer all five questions before leaving this item.

ccna_vtp_sim_question






Notice: All the images in this VTP LAB are used for demonstration only, you will see slightly different images in the real CCNA exam

Question 1:

What interface did Sw-AC3 associate with source MAC address 0010.5a0c.ffba ?

a) Fa0/1
b) Fa0/3
c) Fa0/6
d) Fa0/8
e) Fa0/9
f) Fa0/12

Answer: Fa 0/8

Explanation: to find out which interface associated with a given MAC address, use the show mac-address-table command. It shows the learned MAC addresses and their associated interfaces. After entering this command, you will see a MAC address table like this:

ccna_vtp_sim_answer_1

From this table we can figure out that the MAC address 0010.5a0c.ffba is associated with interface Fa0/8

Question 2:

What ports on Sw-AC3 are operating has trunks (choose two)?

a) Fa0/1
b) Fa0/3
c) Fa0/4
d) Fa0/6
e) Fa0/9
f) Fa0/12

Answer: Fa0/9 and Fa0/12

Explanation: Use the show interface trunk command to determine the trunking status of a link and VLAN status. This command lists port, its mode, encapsulation and whether it is trunking. The image below shows how it works:

ccna_vtp_sim_answer_2

(This image is used for demonstration only)

Question 3:

What kind of router is VLAN-R1?

a) 1720
b) 1841
c) 2611
d) 2620

Answer: 2611

Explanation: VLAN-R1 is the router directly connected to Sw-Ac3 switch, so we can use the show cdp neighbors command to see:

1. Neighbor Device ID : The name of the neighbor device;
2. Local Interface : The interface to which this neighbor is heard
3. Capability: Capability of this neighboring device - R for router, S for switch, H for Host etc.
4. Platform: Which type of device the neighbor is
5. Port ID: The interface of the remote neighbor you receive CDP information
6. Holdtime: Decremental hold time in seconds

Sample output of show cdp neighbors command:

ccna_vtp_sim_answer_3

One thing I want to notice you is "Local Intrfce" in the image above refers to the local interface on the device you are running the "show cdp neighbors" command

Question 4: Which switch is the root bridge for VLAN 1?

Answer: Sw-DS1

Explanation: First we use the show spanning-tree vlan 1 to view the spanning-tree information of VLAN 1

ccna_vtp_sim_answer_4

Notice that if you see all of the interface roles are Desg (designated) then you can confirm Sw-Ac3 switch is the root bridge for this VLAN (VLAN 1).

If you see there is at least one Root port in the interface roles then you can confirm Sw-Ac3 is not the root bridge because root bridge does not have root port. In this case, we notice that the root port on Sw-Ac3 switch is FastEthernet0/12, so we have to figure out which switch is associated with this port -> it is the root bridge. You can verify it with the show cdp neighbors command:

ccna_vtp_sim_answer_4_2

The "Local Intrfce" column refers to the interface on the switch running "show cdp neighbors" command. In this case, Sw-DS1 is associated with interface FastEthernet0/12 -> Sw-DS1 is the root bridge

Question 5: What address should be configured as the default-gateway for the host connected to interface fa 0/4 of SW-Ac3?

Answer: 192.168.44.254

Explanation:

First we have to identify which VLAN interface Fa0/4 belongs to by the show vlan command

ccna_vtp_sim_answer_4_show_vlan

From the exhibit we know that VLAN 44 is configured on router using sub-interface Fa0/0.44 with IP address 192.168.44.254/24

ccna_vtp_sim_answer_4_part_exhibit

Therefore the default gateway of the host should be 192.168.44.254

Question 6: From which switch did Sw-Ac3 receive VLAN information ?

Answer: Sw-AC2

Explanation: to view the VTP configuration information, use the show vtp status command

ccna_vtp_sim_answer_4_show_vtp_status

So we knew Sw-Ac3 received VLAN information from 163.5.8.3 (notice:the IP address may be different). Finally we use the show cdp neighbors detail to find out who 163.5.8.3 is:

ccna_vtp_sim_answer_4_show_cdp_neighbors_detail

There are still some questions for the VTP SIM, I will update them soon!

CCNA Static

2008-05-18 EbooK_tool_CCNA
CCNA 1 - Module 10 2008-05-15 CCNA1
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CCNA4- VOUCHER

THIS EXAM IS (80%)
--------


What is accomplished by segmenting a LAN with a bridge?

*increase large collision domains

reduce large collision domains

reduce small broadcast domains

increase small broadcast domains



2
How many Telnet sessions can take place simultaneously on a router running a standard edition of the IOS?
4
*5
8
10



3
What is a disadvantage of cut-through switching?

*no error checking

a decrease in error checking

decrease in number of collision domains

decrease in bandwidth

increased latency



4
Which of the following are data link layer encapsulation details? (Choose two.)

*Packets are put into frames.

Data is packaged into a packet.

Data is segmented into segments.

Data is converted for Internet travel.

*An address is added to identify the directly connected device.



5
Select the characteristics specified by 10BaseT. (Choose three.)

*twisted pair cable

T style connectors

*baseband transmission

10 gigabits per second data rate

*10 megabits per second data rate

decimal encoded data transmission



6
A LAN is to be added to an unused router Ethernet interface. What steps must be performed to configure this interface to allow connectivity to the hosts on this LAN? (Choose two.)

*Enter the command no shutdown.

A password must be set on the interface.

The interface DCE clock rate must be set.

The interface must be configured for virtual terminal access.

*The interface must be configured with an IP address and subnet mask.

The router must be put in setup mode in order for the interface to be configured.



7
Which media types can be used in an implementation of a 10BASE-T network? (Choose three.)

Category 5 UTP *
Category 5e UTP *
Category 3 UTP *
coaxial cable
multi-mode fiber
single mode fiber


8
If 4 bits are borrowed from the host field of a Class C address to create subnets, what will the range of usable host addresses be in the last subnet?

.224 to .239

.225 to .239

.225 to .254

.241 to .254

.241 to .255

*.240 to .255



9
Which of the following describe how a device on a LAN builds a table of MAC addresses? (Choose two.)

by monitoring the traffic that occurs on the local network segment

*via FTP from the nearest router

*by sending a request to the nearest domain name server

by broadcasting an ARP request



10
Which of the following best describes how the Gigabit Ethernet, Media Access Control method views the link?

ring
shared bus
point-to-point *
star
extended star



11
What is the purpose of Positive Acknowledgment and Retransmission (PAR)?

PAR allows the presentation layer to request that data be resent in a format the destination host can process.

PAR provides a mechanism for the receiving device to request that all segments be retransmitted if one segment is corrupt.

*PAR helps ensure that a number of data segments sent by one host are received by another host before additional data segments are sent.

PAR is used to renegotiate the window size during the synchronization process.



12
Which criteria identify a Class B address? (Choose two.)

decimal number in first octet between 127-191

decimal number in first octect between 128-192

*decimal number in first octect between 128-191

first bit of binary IP address is 0

*first two bits of binary IP address are 10

first three bits of IP binary address are 110



13
An administrator has made routing protocol changes to a router's configuration. To ensure that the changes are implemented, the active configuration is saved and the router is reloaded. After the router has initialized, the output on the screen displays "Would you like to enter the initial configuration dialog?[yes/no]:" Why did this dialog appear?

There was a POST failure.

The incorrect IOS loaded.

There was an error in the startup configuration file.

*The configuration register was set to ignore NVRAM.



14
What operations are performed during router initialization? (Choose three.)

*The IOS is loaded into RAM.

The generic bootstrap loader tests all interfaces.

All directly connected network devices are identified.

*A valid configuration file is loaded from NVRAM if specified by the configuration register.

*A question driven setup menu is presented if a valid configuration file cannot be loaded.



15
For a network manager planning the installation of a new network, which of the following will be needed to implement a typical 10BASE-T network installation? (Choose three.)

RJ-11
BNC connectors
RJ-48 patch cables
RJ-45 connectors *
Category 5 UTP cables *
hubs or switches *


16. A company with a Class B license needs to have a minimum of 1,000 subnets with each subnet capable of accommodating 50 hosts. Which mask below is the appropriate one?

255.255.0.0

255.255.240.0

255.255.255.0

*255.255.255.192

255.255.255.224



17
A network administrator can establish a remote session to a host using the Router> telnet 192.168.1.1 command but is unsuccessful when using the Router> telnet Boston command to connect to the same interface. Which of the following could be the problem? (Choose two.)

*The ip host table on the router is not configured.

The command telnet Boston was issued from the wrong router prompt.

The routing table is missing.

*Domain name services are not available.



18
Which of the following network components would be considered Layer 1 devices? (Choose three.)

*hub

router

bridge

switch

*repeater

*transceiver



19
What is the maximum distance that 10BASE-T will transmit data before signal attenuation affects the data delivery?

*100 meters

185 meters

300 meters

500 meters



20
What is the result of executing the erase startup-config command?

It deletes the active configuration file from RAM.

*It deletes the backup configuration file in NVRAM.

It deletes the saved configuration file from ROM.

It deletes the saved configuration file from the C: drive.



21
Which of the following imposes boundaries on broadcast traffic?

Bridge

Repeater

*Router

Transceiver



22
Which utility shows the route a packet takes to reach its destination?

netstat

ping

Telnet

*traceroute



23
Which device is considered a multi-port bridge?

hub

router

*switch

gateway

transceiver

repeater



24
What organization developed the TCP/IP reference model?

Internet Engineering Task Force (IETF)
National Intstitute of Standards and Technology (NIST)
Department of the Navy (DoN)
Department of Defense (DoD) *
Massachusetts Institute of Technology (MIT)
Stanford University



25 Which of the following is true regarding CDP and the graphic shown?

CDP running on Router D will gather information about routers A, B, C, and E.

By default, Router A will receive CDP advertisements from routers B and C.

*If routers D and E are running different routing protocols, they will not exchange CDP information.

Router E can use CDP to identify the IOS running on Router B.



26
How would an administrator configure a static route for use if a primary route failed?

configure the route with a metric greater than the default value

configure the route and the router will activate it as needed

configure the route to activate by using the redistribute static command

*configure the route with an administrative distance greater than the default value



27
Convert the Hexadecimal number A2 into its Base 10 equivalent. Select the correct answer from the list below.

156

158

160

*162

164

166



28
*What happens on an Ethernet network after a collision occurs? (Choose three.)

A backoff algorithm is invoked and transmission is stopped.

Devices involved in the collision have a random period of time for priority retransmission of the damaged packet.

The devices involved in the collision release a token indicating the time each station may begin retransmitting.

*The devices involved in the collision do not have priority to transmit data.

*The devices with data to transmit return to a listen-before-transmit mode.

Transmit work will restart with the reissuance of all data.



29
Which of the following types of networks pass a token sequentially to each host? (Choose two.)

Ethernet

*Token Ring

*FDDI

Frame Relay

ISDN



30
What is the length of a MAC address?

8 bits

8 bytes

24 bits

24 bytes

*48 bits

48 bytes


31 Which of the following are TCP services? (Choose three.)

address resolution

end-to-end communication

*flow control

reliability of data delivery

path determination

*data representation



32
Routers have different types of memory. Choose the answer that describes RAM.

provides working storage

*stores a fully functional IOS image

stores the startup configuration file

initializes the code used in router startup



33
Which command will display routing table information about all known networks and subnetworks?

Router# show ip interfaces

Router# show ip connections

*Router# show ip route

Router# show ip networks



34
Which of the following statements describe distance vector routing updates? (Choose three.)

Topology changes are transmitted to all routers at once.

Routers send their entire routing tables in distance vector updates.

*Path cost metrics for each route are included in the updates.

Periodic updates are sent directly to every router in the network.

*Routing updates are sent periodically to adjacent routers.

*Routers send only the state of their own links in distance vector updates.



35
Which ICMP message type notifies source hosts that a receiving host or network is not available?

time exceeded

redirect

*destination unreachable

source quench

parameter problem

echo reply



36
How many total subnets are created by applying the subnet mask 255.255.252.0 to a Class B network?

4

6

*64

252

255

1024



37
Which of the following conditions will cause a router using holddown timers to ignore an update?

an update from a different router with a better metric

an update from a different router with a poorer metric

an update from the same router with a better metric

*an update from the same router with a poorer metric



38
Which IP packet field will prevent endless loops?

type-of-service

identification

flags

*time-to-live

header checksum



39
Which of the following is a network type that is widely used in dialup networking?

shared media

point-to-point

extended shared media

*point-to-multipoint



40
When a network administrator applies the subnet mask 255.255.255.248 to a Class A address, for any given subnet, how many IP addresses are available to be assigned to devices?

1022

510

254

126

30

*6



41
Cisco Discovery Protocol (CDP) operates at which OSI Layer?

physical layer

network layer

*data link layer

presentation layer



42
Which protocol can be used to load or retrieve Cisco IOS images to or from a router?

SNMP

*TFTP

UDP

TCP



43
Which of the following is a transport layer protocol of the TCP/IP model?

FTP

*UDP

IP

TFTP



44
Which of the following is created with switched full-duplex transmission?

more collision domains

fewer collision domains

*no collision domains

no increase in broadcast domains

more broadcast domains



45
Which of the following IP addresses are broadcast addresses if the subnet mask is 255.255.255.240? (Choose three.)

*75.32.75.15

205.16.35.11

*199.254.129.111

*129.130.17.143

135.22.55.93

105.33.62.213


46 What type of routing uses information that is manually entered into the routing table?

dynamic

interior

*static

standard



47
What is used to resolve known IP addresses to unknown MAC addresses?

*ARP

DNS

DHCP

RARP



48
Which of the following OSI layers offers reliable, connection-oriented data communication services?

session

*transport

network

data link



49
Which of the following are benefits of creating a subnetwork structure in an IP network? (Choose three.)

permits network address duplication

*allows for address flexibility

*prevents address replication

provides broadcast containment

*adds low-level security

allows for more network hosts available



50
How many IP addresses can be assigned to host devices on each subnet of a Class B network with a subnet mask of 255.255.255.248?

3

5

6

8

30

8190???? mayby that



51
After a Telnet session has been suspended, which actions will restart the session? (Choose two.)

pressing Enter to restart the most recent session

using the resume command followed by a session ID

*typing the session ID followed by pressing Enter

*using the resume command followed by the IP address



52
Which layer of the OSI model covers physical media?

*Layer 1

Layer 2

Layer 3

Layer 4

Layer 5

Layer 6



53
Which protocol is used by FTP to transfer files over the Internet?

*TCP

SMTP

UDP

SNMP



54
Which of the following factors should be considered when selecting a routing protocol to be implemented in an enterprise network? (Choose three.)

*bandwidth consumption

*router memory requirements

router location

spanning tree size

*router processor capability

flow control capability



55


A ping 192.1.1.20 command is issued on workstation A to determine if workstation B can be reached. What events will occur if this command is successful? (Choose two.)

*The router will block the ping request message.

The router will reply to the echo request with a proxy ping response.

Workstation A will send a UDP ping request message to workstation B.

Workstation B will send a UDP ping reply message to workstation A.

*Workstation A will send an ICMP echo request message to workstation B.

Workstation B will send an ICMP echo reply message to workstation A.



56
Which mode will a router enter if it is unable to locate a valid startup configuration file during the boot process?

Boot mode

Config mode

Setup mode

Startup mode



57
Which protocol of the TCP/IP model internet layer provides connectionless, best-effort-delivery of datagrams?

ARP

ICMP

IP

RARP

*TCP

DNS



58
Which of the following does a router use to make a forwarding decision?

*destination IP address

MAC address

source IP address

encapsulation address

default gateway



59
Routers have different types of memory. Choose the answer that describes NVRAM.

provides working storage

*stores a fully functional IOS image

stores the startup configuration file

initializes the code that is used to boot the router



60
Which statement is correct concerning routing and routed protocols?

A routed protocol allows the routers to communicate with other routers and maintain tables for a routing protocol.

A routing protocol allows routers to communicate with other routers and maintain tables for a routed protocol.

*Routers only need to use routing protocols to work properly.

There is no difference between routed and routing protocols.

CCNA4- Module 3 Exam Answers

How did Cisco alter the HDLC encapsulation to allow a single link to carry multiple protocols?

split the transmissions into multiple channels each carrying a single protocol

identified the protocol in the FCS field

compressed the datagrams differently for each protocol

*** added a type field to identify the protocol



A technician has used Telnet to gain remote access to a router that has no connectivity on its serial interface. Which command should be issued to determine if the serial cable is connected properly?

*** show controllers

show processes

show run

show status

A two router network is running PPP over the serial interfaces that connect them. The enable password on the Denim router is "gateway". The Denim router also has a locally configured authentication password for the Plaid router which is "fortress". Which command must be executed on the Plaid router to allow Denim to authenticate to the Plaid router using CHAP?

Plaid(config)# enable secret gateway

Plaid(config)# enable secret fortress

Plaid(config)# username Plaid password fortress

*** Plaid(config)# username Denim password fortress

Plaid(config)# hostname Plaid secret password gateway

Plaid(config)# hostname Plaid secret password fortress

Which authentication protocol can be spoofed to allow playback attacks?

MD5

CHAP

*** PAP

NCP

How is the MD5 function valuable in authentication? (Choose two.)

*** uses a one-way hash function

authentication occurs more rapidly

*** challenges are unique

the remote router assumes control of frequency of challenge

the remote router assumes control of timing of challenge

Which command specifies a link quality over a PPP link?

ppp link 50

ppp link quality 60

ppp percentage 80

*** ppp quality 90


Refer to the output of the show interface Serial0/0 command in the graphic. How many NCPs have been established?

1

*** 2

3

4

Which of the following is an advantage of using time-division multiplexing (TDM) for transmitting data? (Choose two.)

It allows a single source to transmit over multiple data channels.

*** Multiple sources can transmit over a single channel.

*** Original data streams must be reconstructed at the destination.

TDM relies on Layer 3 protocols to operate.



Which of the following describes the High-Level Data Link Control protocol? (Choose three.)

*** HDLC provides flow and error control.

Standard HDLC supports multiple protocols on a single link.

*** HDLC uses sequencing and acknowledgements.

HDLC is defined as the default encapsulation on Cisco LAN interfaces.

*** Cisco implemented a proprietary version of HDLC.

A technician is testing the functionality of a recently installed router. The technician is unable to ping the serial interface of a remote router. The technician executes the show interface serial 0/0 command on the local router and receives the following output:

Serial0/0 is up, line protocol is down(disabled)

What are possible causes for this command output? (Choose two.)

interface missing the no shutdown command

clockrate command missing

*** CSU/DSU failed

*** interface shutdown due to high error rate

cable missing

When troubleshooting the Serial 0/0 interface of a router, a technician issues the show controllers command. The following was the output of the command:

*** Interface is Serial0/0, electrical interface is UNKNOWN.

What can be concluded about the Serial 0/0 interface? (Choose three.)

Serial0/0 is down, line protocol is down

Serial0/0 is down, line protocol is up

Serial0/0 is up, line protocol is down

The interface is neither DCE or DTE.

*** The interface hardware may be faulty.

*** The cabling may be improperly connected.

ISDN BRI service uses two B channels to send data, voice, and video. If the first channel becomes saturated, the second channel can be configured to forward packets. Which command will allow ISDN to load balance across both links?

Router(config-if)# ppp quality 2

Router(config-if)# ip variance

Router(config-if)# ip maximum-paths 2

*** Router(config-if)# ppp multilink



Which of the following describe functions of the Point-to-Point protocol with regards to the OSI model? (Choose three.)

PPP uses Layer 3 of the OSI model to establish and maintain a session between devices.

PPP operates at all layers of the OSI model.

*** PPP uses the data link layer to configure such options as error detection and compression.

*** PPP provides a mechanism to multiplex several network layer protocols.

PPP uses Network Control Protocols (NCP) to test and maintain connectivity between devices.

*** PPP can be configured on both synchronous and asynchronous serial interfaces.

PPP uses several protocols for communication. Which of the following are options that the LCP protocol in the PPP architecture can provide? (Choose two.)

*** testing the quality of the link

routing packets between devices

assigning individual station addresses

configuring network layer protocols

*** negotiating authentication options



Several tasks must occur before a link between two routers can pass data using PPP. Which of the following are required to establish and maintain a PPP session between two routers?

configure each host with a PPP address

configure authentication between the two routers

*** send LCP and NCP frames to negotiate configuration parameters

send hostname and password information between the two routers

Which of the following is a reason for using such protocols as PAP and CHAP?

to establish a PPP session

to provide error checking on a WAN link

*** to restrict access to networks connected by serial and ISDN links

to provide a backup hostname and privilege mode password on the router

Which of the following describes the CHAP protocol? (Choose three.)

*** exchanges a random challenge number during the session to verfiy identity

sends authentication password to verify identity

*** prevents transmission of login information in plain text

*** disconnects the PPP session if authentication fails

initiates a two-way handshake


Which command was used to display the partial output shown in the graphic?

show ppp traffic

show lcp traffic

*** debug ppp negotiation

debug ppp authentication


What can be concluded from the output shown in the graphic? (Choose three.)

A two-way handshake is occuring.

*** The LCPs were already negotiated.

*** The router can begin NCP negotiations.

The debug ppp negotiation command was executed.

*** The debug ppp authentication command was executed.

Which advantage does the multilink option provide when using PPP?

*** Data transmission has load balancing possibilities.

Interfaces can be configured using both HDLC and PPP.

More than one authentication method can be used.

More than one compression protocol can be configured.

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CCNA4- Module 2 Exam Answers

1
Which statements are correct regarding ATM connections? (Choose two.)

uses only PVCs

*** is useful for video transfers

*** has data rates beyond 155 Mbps

cells have 32 byte payload and a 5 byte overhead

mandates single virtual circuits on a single leased line connection



2
Which of the following describes a packet-switched network using connection-oriented data transfer? (Choose two.)

*** Each packet carries an identifier.

Each packet carries full addressing information.

Each switch in the route must evaluate the addressing information to determine where to send the packet.

*** Each switch determines where to send the packet by examining tables in memory.

The addressing information is used to set switches along the route of data transfer to create a continuous copper circuit.



3
A European company needs a low cost, dialup WAN connection to validate transactions for point-of-sale card readers. Which connection type is commonly used for this situation?

ATM

*** X.25

Frame Relay

Leased lines



4
Which of the following is commonly used as Data Terminal Equipment?

ISDN

modem

*** router

CSU/DSU



5
A company requires a WAN connection that will carry 64 kbps and allow fast call setup time. The connection does not need to carry video. What is the best choice for this company?

ATM

*** ISDN BRI

X.25

analog dialup



6
Why is it important to identify the type of traffic that will be carried on the WAN links before choosing a WAN technology?

to determine the routing protocol to be used on the WAN link

to determine the WAN topology

*** to determine the requirements for latency and jitter

to determine the type of signaling protocol to be used on the WAN link



7
On which of the following are most Layer 2 WAN encapsulations based?

IP

PPP

*** HDLC

SLIP

HSSI

CSU



8
A company only requires a WAN connection to transfer sales data from individual stores to the home office. All transfers will occur after business hours. They estimate they will never need a connection faster than 56 kbps. Which type of connection is best for this company?

ATM

ISDN

*** analog dialup

T1 Leased Line



9
Which of the statements regarding DSL are correct? (Choose three.)

DSL provides a consistent bandwidth of 2.154 Mbps.

DSL connections provide a fast dialup to establish a WAN connection.

*** DSL connects the local loop to a digital subscriber line access multiplexer.

*** DSL bandwidth varies and can exceed the bandwidth of a T1/E1 leased line.

*** For DSL to function properly, the local loop must be less than 5.5 kilometers (3.5 miles).

DSL is a popular choice for enterprises that need to connect home users to the local network due to strong security.



10
Which of the following are disadvantages of circuit-switched networks? (Choose two.)

Data is subject to unpredictable delays while it waits for other subscribers to transmit data.

*** The connection capacity is used inefficiently due to irregular traffic bursts.

Data delivery is less reliable because only connectionless delivery methods are used.

*** Circuit-switched networks are more expensive for data traffic.

Circuit-switched networks are less expensive for 24/7 data traffic.



11
Depending on the company size and geographical layout, there might be many end points on the company WAN. Why is it important to identify all the end points of the WAN before choosing a WAN design?

to determine the routing protocol to be used on the WAN link

*** to determine the WAN topology

to determine the requirements for latency and jitter

to determine the signaling protocol to be used on the WAN link



12
Which of the following is true of WANs?

Shared network WAN technologies such as Frame Relay and ATM are more expensive but offer less latency and jitter than dedicated lines.

ISDN is suitable for large enterprises.

*** The more network devices that data has to pass through across the WAN, the more latency and less reliability the network will experience.

WANs typically incorporate only one technology such as ISDN, Frame Relay, or ATM.



13
A new international company needs to have a design for WAN connectivity. The company will have at least five offices in every state in the United States and Mexico. Some states will have as many as 20 offices. The branch offices will require constant contact with the services of the main office. Which design model is best for WAN connectivity in this situation?

a mesh network of all branch WANs

a simple star topology connecting all branch LANs to a central router with multiple interfaces

a one layer design using Frame Relay links between LANs

*** a three layer hierarchical topology interconnecting branch LANs within an area, the area LANs within a region, and connecting the regions to form the core of the WAN



14
Which statement is true regarding WAN technologies?

Most WANS use only one technology throughout the infrastructure such as ISDN, Frame Relay or ATM.

Data transfer speeds on the WAN are typically faster than the speeds on a LAN.

*** WANs operate at the lower three layers of the OSI model.

WANs are unable to support the transfer of voice or video traffic.



15
A large company already has a T1 leased line but this connection is inadequate at peak business hours. Furthermore, they would like a backup WAN connection in case their leased line temporarily fails. What type of WAN connection is commonly used in this situation?

X.25

DSL

*** ISDN

cable modem

56 kbps




16
Which term describes the cabling that connects the customer site to the nearest exchange of the WAN service provider?

CPE

CO

*** local loop

DCE

DTE



17
Which of the following connections will provide the equivalent of a T1/E1 connection and is intended for large businesses?

BRI

*** PRI

DLCI

PSTN

POTS

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CCNA4- Final Exam Answers 3

1
A network administrator is asked to design a system to allow simultaneous access to the Internet for 250 users. The ISP for this network can only supply five public IPs. What can be used to accomplish this task?

routable translation

dynamic translation

static translation

*** port address translation


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2


The LAN attached to the Ethernet interface of the Raleigh router shown in the graphic is addressed with private IP addresses. If one public IP is assigned to the company, which commands could be used in a configuration that allows all devices with private IPs in this network to access the Internet? (Choose two.)

*** ip nat inside source list 1 interface serial0 overload

ip nat outside source list 1 interface serial0 overload

ip nat inside serial0

*** ip nat inside source list 1 pool Raleigh overload

ip nat inside Raleigh overload

ip inside nat source list 1 interface serial0 Raleigh



3


The command output shown in the graphic was taken from a Cisco 806 broadband router. Which kind of address translation is in effect on this router?

static

dynamic

*** overload

private

public



4
Which of the following IP addresses are defined by RFC 1918 as private addresses? (Choose three.)

*** 192.168.146.0/22

172.10.25.0/16

*** 172.31.0.0/16

20.0.0.0/8

*** 10.172.92.8/29



5


How will data be transmitted from the router to the ISP if the router has the two links shown in the graphic?

Both links will transmit data at the same rate.

1544 bits can be transmitted simultaneously from the router over the T1 line.

*** Both links will transmit bits one by one.

The 56K link will transmit a maximum of 53 bits at the same time.



6
Which statements about DHCP are true? (Choose three.)

DHCP uses TCP.

DHCP uses UDP.

*** DHCP sends messages to the server on port 67.

DHCP sends messages to the server on port 68.

*** DHCP sends messages to the client on port 67.

*** DHCP sends messages to the client on port 68.



7
Which command would be used to exclude the IP address 192.168.24.5 from the DHCP address pool on a router?

Router(dhcp-config)# ip dhcp excluded-address 192.168.24.5

Router# ip dhcp excluded-address 192.168.24.5

Router(config-excluded)# ip dhcp excluded-address 192.168.24.5

*** Router(config)# ip dhcp excluded-address 192.168.24.5

Router(config)# excluded-address 192.168.24.5

Router(dhcp-config)# excluded-address 192.168.24.5



8
The WAN connection for a nationwide company with 250 offices must support constant connections to core layer services for file sharing, and occasional Internet access. Which combination of WAN technologies will meet these needs with minimum expense?

Frame Relay PVC for Internet access and ATM for file server access

Frame Relay PVC for Internet access and ISDN for file server access

ISDN for Internet access and X.25 for file server access

*** ISDN for Internet access and Frame Relay PVC for file server access



9


Which command would produce the output shown in the graphic?

show ip dhcp server statistics

show ip dhcp binding

*** debug ip dhcp server events

debug ip dhcp binding



10
Which of the following devices is used to establish the communications link between the customer equipment and the local loop for digital lines?

terminal adapter

modem

*** CSU/DSU

PBX switch

ISDN switch

Frame Relay Switch



11
Which of the following statements are true about Frame Relay? (Choose three.)

Frame Relay operation is defined by a series of ISO standards.

*** Frame Relay is a packet switched, connection-oriented, wide area network service.

Frame Relay only supports point-to-point connections.

*** A router can be considered as data terminal equipment (DTE) in a frame relay system.

Frame Relay is a cell switched, connection-oriented, wide area network service.

*** Frame Relay networks use a subset of the HDLC protocol to carry information.



12
ITU-T Q.921 specifies the use of which protocol for sending control and signaling messages between the router and the ISDN switch?

HDLC

IPCP

LAPB

*** LAPD

NCP

SS7



13
A company needs a WAN connection that is capable of transferring voice, video, and data at a minimum data rate of 155 Mbps. Which WAN connection is the best choice?

X.25

DSL

*** ATM

ISDN BRI

ISDN PRI



14
Which statement explains why basic DSL is an unpopular WAN connectivity choice for enterprise computer departments that support home users?

DSL offers insufficient bandwidth to home users.

DSL requires the installation of new cables, which is not always possible for home users.

DSL dialup connection time is too slow for business use.

*** DSL has limited geographical availability.



15
When planning simple WAN connections for a small company, which feature of the three layer hierarchical model makes it a good choice for the WAN topology.

It provides for redundancy.

*** It allows for easy WAN expansion in case of company growth.

It is less expensive.

It provides faster connection time.

It provides less latency and jitter.


16
Which of the following terms describes a device that will put data on the local loop?

DLCI

CO

*** DCE

DTE

PRI

BRI



17
Which of the following are supported by a BRI interface on a router? (Choose two.)

*** Two independent channels that can carry analog data with a bandwidth of 64 KHz.

A single 128 Kbps digital bearer channel.

Two multiplexed channels carrying digital data.

A single 64 Kbps signaling channel.

A multiplexed data channel that can only handle SS7 information.

*** A 16 Kbps delta channel used for signaling purposes.



18
A network administrator has been asked to provide the network in the United States with an ISDN WAN link. The router available to provide the WAN connection is a non-modular Cisco router with two serial connections. What must be done to adapt one of the serial interfaces of this router for the ISDN connection?

Nothing. The router is already suitable.

Purchase a BRI WAN interface card to install in the router.

Purchase a U interface to install in the router.

*** Purchase a TA/NT1 device to install on the router.



19 (NEED ANSWERS!!!)
Which of the following is a function of a DCE device?

determines the next-hop address for a packet

multiplexes signals from several sources

adapts information for use on a service provider's network

used to directly connect two DTEs to simulate a WAN network



20
Why would data frames be discarded in a Frame Relay network? (Choose two.)

The frame contains an incorrect IP address.

*** An error has been detected in computing the frame check sequence.

There is not enough bandwidth dedicated for the data contained in the frame.

Data is transmitted at a rate greater than the access speed.

*** The frame contains an incorrect DLCI.



21
Which of the following are commonly used as Data Communications Equipment? (Choose two.)

*** modem

router

*** CSU/DSU

ISDN Switch

Frame Relay Switch



22
Which of the following LCP options can be configured for PPP? (Choose three.)

*** CHAP

*** Stacker

IPCP

CDPCP

*** Multilink



23
Which command will provide for CHAP authentication if the hostname on a challenging router is tampa with a password of florida?

*** username tampa password florida

username tampa florida

hostname tampa password florida

hostname tampa florida



24
Which of the following describes the PAP protocol? (Choose two.)

*** sends unencrypted authentication passwords

performs a three-way handshake

*** allows repeated login attempts

uses the remote router hostname to verify identity

sends a random challenge throughout the session



25
Why was NAT created? (Choose two.)

to create firewalls on routers

*** to conserve IP addresses

to translate domain names into IP addresses

to map network addresses to the corresponding data link address

*** to hide internal addresses from external devices



26


An ISDN router is configured for DDR as shown in the graphic to provide Internet connectivity for the company. Immediately after a user in the company attempts opens a web browser to connect to the Internet, another user in the company tries to download a file using FTP. What will happen? (Choose two.)

*** The user that opened the browser will connect to the Internet because the DDR link will consider this traffic interesting.

The Internet user will be disconnected because the FTP data will cause the DDR link to shut down.

The DDR link will allow the FTP traffic because it is interesting.

The DDR link will not allow the FTP traffic because it is not interesting.

The FTP connection will fail because the DDR link is already in use for the Internet connection.

*** The FTP connection will succeed because the web user already opened the DDR link.



27
Which command configures the SPID on the first B channel of an ISDN interface?

Router(config)# isdn spid0 spid-number [ldn]

Router(config)# isdn spid1 spid-number [ldn]

Router(config-if)# isdn spid0 spid-number [ldn]

*** Router(config-if)# isdn spid1 spid-number [ldn]



28
What does the command debug isdn q921 display?

exchange of call setup and teardown messages

PAP and CHAP authentication traffic

*** Layer 2 messages on the D channel

protocol errors and statistics

Layer 2 messages on the B channel



29
When PPP authentication is enabled, which of the following may be checked before establishing a PPP link between two devices? (Choose two.)

the enable password on the remote device

the ip host configuration on the remote device

*** the security server database for the username and password of the remote device

the hostname and enable password on the local device

*** the local database for the username and password of the remote device



30
How many separate B channel circuits can be provisioned on a PRI interface that uses a T1 line for connectivity?

2

16

*** 23

24

30

128


31
Which operating systems support multiuser capability? (Choose three.)

*** Linux

Windows 98

Windows ME

*** Windows XP

*** Windows 2000



32


What is placed in the address field of a frame that will travel from the DC office of ABC company to the Orlando office?

MAC address of the Orlando router

MAC address of the DC router

192.168.1.25

192.168.1.26

DLCI 100

*** DLCI 200



33
What does a DLCI of 0 indicate about a frame? (Choose two.)

This is the first data frame sent by the router.

This is a management frame.

The encapsulation type is Cisco.

The encapsulation type is IETF.

*** The LMI type is Ansi or q933a.

The LMI type is Cisco.



34
Which of the following protocols can be used to encapsulate data traffic sent from a router BRI interface? (Choose two.)

Link Access Protocol - Data

*** High-Level Data Link Control

Logical Link Control

Serial Data Link Control

*** Point to Point protocol

Binary Synchronous Control protocol



35


An administrator consoled into the Jelly router needs to telnet to the Butter router. What DLCI will the Jelly router place in the frame to perform this operation?

110

115

220

*** 225



36
Which commands can be used to identify which DLCIs are active? (Choose two.)

*** show frame-relay map

show frame-relay lmi

*** show frame-relay pvc

show frame-relay interface

show interfaces

show ip route



37
A technician is testing the functionality of a recently installed router. The technician is unable to ping the serial interface of a remote router. The technician executes the show interface serial0/0 command on the local router and sees the following line in the output:

Serial0/0 is up, line protocol is down

What are possible causes for this command output? (Choose three.)

*** remote CSU/DSU failure

serial cable missing

interface shutdown

*** keepalives not being sent

*** clocking signal missing



38
A router needs to forward a message received from a host. How does the router identify the correct VC to forward the message? (Choose two.)

The router forwards the frame to all ports in the network and learns the address from the reply frame.

The destination host IP address is embedded in the DLCI.

*** The router searches Inverse ARP tables for maps of DLCIs to IP addresses.

*** A table of static mappings can be searched.

The router broadcasts a request for the required IP address.



39
Which of the following statements regarding point-to-point subinterfaces are true? (Choose two.)

A point-to-point subinterface on one router must be connected to a similar subinterface on a remote router.

*** Each point-to-point subinterface connection is configured with its own subnet.

The DLCIs configured on the remote and local routers must be the same for the PVC.

LMI frames are not transmitted through a subinterface.

*** Routing updates in point-to-point networks are not subject to the split-horizon rule.



40


Which of the following can be concluded from the router output displayed in the graphic? (Choose two.)

*** The local DLCI number of this PVC is 100.

The interface has been configured for subinterfaces and this map is for subinterface 0.

*** Inverse ARP has determined the remote ip address as 10.140.1.1.

The LMI type is ANSI (0x64).

There is currently no congestion on the link.



41
Which of the following are functions of the Local Management Interface used in Frame Relay networks? (Choose three.)

*** exchange information about the status of virtual circuits

map DLCIs to network addresses

*** provide flow control

provide error notification

provide congestion notification

*** send keepalive packets to verify operation of the PVC



42
Which of the following describe functions of the Point-to-Point protocol with regards to the OSI model? (Choose three.)

PPP uses Layer 3 of the OSI model to establish and maintain a session between devices.

PPP operates at all layers of the OSI model.

*** PPP uses the data link layer to configure such options as error detection and compression.

*** PPP provides a mechanism to multiplex several network layer protocols.

PPP uses Network Control Protocols (NCP) to test and maintain connectivity between devices.

*** PPP can be configured on both synchronous and asynchronous serial interfaces.



43
Which of the following describes the CHAP protocol? (Choose three.)

*** exchanges a random challenge number during the session to verfiy identity

sends authentication password to verify identity

*** prevents transmission of login information in plain text

*** disconnects the PPP session if authentication fails

initiates a two-way handshake



44
Which of the following switching types will allow the communication devices in the provider's network to be shared and only allocated to an individual subscriber during data transfer?

circuit-switched

*** packet-switched

frame-switched

dedicated-switched lines

lease-switched



45
How does Frame Relay technology process frames that contain errors? (Choose two.)

*** Frame Relay services depend on the upper layer protocols to handle error recovery.

It requires the receiving device to request that the sender retransmit erroneous frames.

FECN, BECN, and DE bits are set in the frames to minimize errors.

*** The receiving device drops any frames that contain errors without notifying the sender.

The frame relay switch notifies the sender that errors were detected.


46


Which of the following describes the WAN devices and cabling shown in the graphic? (Choose two.)

A null-modem cable is used between RouterD and DeviceC for connectivity.

A DB-25 or DB-9 serial cable is connected to interface S0/0 of RouterA.

*** DeviceB and DeviceC are DCE devices.

*** The same encoding scheme must be used by DeviceB and DeviceC.

A synchronous serial connection exists between DeviceB and DeviceC.

CCNA4- Final Exam Anwers 2

1
Which of the following describes the roles of devices in a WAN? (Choose three.)

*** A CSU/DSU terminates a digital local loop.

A modem terminates a digital local loop.

A CSU/DSU terminates an analog local loop.

*** A modem terminates an analog local loop.

*** A router is commonly considered a DTE device.

A router is commonly considered a DCE device.



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2
What value in the address field of a Frame Relay header identifies the destination of the frame?

CIR

DE

*** DLCI

ISDN

FRAD

PVC



3


The serial PPP link between the Left and Right routers is configured as shown in the diagram. Which configuration issue explains why the link is unable to establish a PPP session?

The IP addresses must be on different subnets.

*** The usernames are misconfigured.

The passwords must be different for the CHAP authentication.

The clock rate must be 56000.

The clock rate is configured on the wrong end of the link.

Interface serial 0/0 on Left must connect to interface serial 0/1 on Right.



4
The output of the show interfaces serial 0/0 command for a frame-relay connection indicates that the serial line is up but the line protocol is down. What are possible causes for this? (Choose two.)

*** There is an LMI-type mismatch between the Frame Relay switch and the router.

There is no clock present on the serial interface.

The interface is shut down.

RARP is not functioning on the router.

*** The cable is disconnected.



5
Which statements are correct about the point in the network where the responsibility of the service provider ends? (Choose three.)

*** The International point is on the customer side of the network terminating unit(NTU).

*** The United States point is at the interface of the customer-provided equipment and the local loop.

The responsibility for this point is controlled by IANA.

*** The point is called the demarcation point.

The point is typically located at the service provider's central office.

The point is located between the customer's local area networks.



6
While prototyping an internetwork in the corporate lab, a network administrator is testing a serial link between serial 0/0 interfaces on two routers. The labels on the serial cable ends have been damaged and are unreadable. What command can be issued to determine which router is connected to the DCE cable end?

show interfaces serial 0/0

show version

*** show controllers serial 0/0

show protocols serial 0/0

show status serial 0/0



7


A network technician determines DHCP clients are not working properly. The clients are receiving IP configuration information from a DHCP server configured on the router but cannot access the Internet. From the output in the graphic, what is the most likely problem?

The DHCP server service is not enabled.

The inside interface for DCHP is not defined.

*** The DHCP pool is not bound to the interface.

The pool does not have a default router defined for the clients.

All the host addresses have been excluded from the DHCP pool.



8
A technician enters the interface serial 0/0.1 multipoint command when configuring a router. What effect will the multipoint keyword have in this configuration? (Choose two.)

*** Split-horizon issues will need to be resolved for this network if RIP is the routing protocol.

A subinterface will be defined for each PVC.

*** All the participating interfaces of remote routers will be configured in the same subnet.

A single DLCI will be used to define all the PVCs to the remote routers.

An IP address will need to be configured on the main interface.



9
When configuring a Frame Relay connection, when should a static Frame Relay map be used? (Choose two.)

when the remote router is a non-Cisco router

*** when the remote router does not support Inverse ARP

when the local router is using IOS Release 11.1 or earlier

*** when broadcast traffic and multicast traffic over the PVC must be controlled

when globally significant rather than locally significant DLCIs are being used



10


Which router command would be used to associate a Layer 2 address with the corresponding Layer 3 address in the internetwork in the diagram?

RouterA(config-if)#frame-relay pvc 100 192.168.15.2

RouterA(config-if)#dialer-map ip 192.168.15.1 100 broadcast

*** RouterA(config-if)#frame-relay map ip 192.168.15.2 100 broadcast

RouterA (config-if)#dialer-map 192.168.15.1 101 serial 0 broadcast

RouterA (config-if)#frame-relay dlci 101 192.168.15.1 broadcast

RouterA (config-if)#dialer-map 192.168.15.1 inverse-arp broadcast



11
Which of the following ISDN protocols is responsible for call setup and call teardown?

*** ITU-T Q.921

ITU-T Q.931

ITU-T I.430

ITU-T I.431



12
What are two ways to resolve split-horizon issues in a Frame Relay network? (Choose two.)

*** create a full-mesh topology

disable Inverse ARP

*** use point-to-point subinterfaces

use multipoint subinterfaces

remove the broadcast keyword from the frame-relay map command



13


What is the purpose of the command marked with an arrow shown in the partial configuration output of a Cisco 806 broadband router?

defines which addresses are allowed out of the router

*** defines which addresses are allowed into the router

defines which addresses can be translated

defines which addresses are assigned to a NAT pool



14


A system administrator is unable to ping the Serial0/0 interface of RouterB from RouterA. During the troubleshooting process, the following facts are established:
- IP addressing and subnet masks are correct.
- RouterA is a Cisco router and RouterB is a router from another vendor.
- RouterA is configured with the default encapsulation.
- The serial interfaces on both routers are up.
- The protocol is down on the serial interfaces of both routers.

What should the administrator do to solve the problem?

Add a clock rate on RouterA.

Enable the serial interface on RouterB.

*** Change the encapsulation on both routers to PPP.

Connect the serial cable to the correct interface on RouterB.

Use the correct serial cable to attach the CSU/DSU to RouterB.



15
An ISDN circuit from a branch office is remaining connected to the regional office. A network administrator determines a user has initiated a continuous ping from a desktop computer to the regional office. Which configuration change would allow the ISDN circuit to disconnect during any attempts to ping, while otherwise functioning properly?

change DDR from legacy to dialer profiles

remove the dialer list statement from the configuration

*** change the dialer list to exclude ICMP as interesting

disable inverse ARP


16
Below is a list of DDR steps. Which of the following identifies the proper order of DDR?

1 - dial number is looked up
2 - interesting traffic triggers DDR
3 - route to destination is determined
4 - call is made

1,2,3,4

1,3,2,4

2,3,1,4

2,1,3,4

*** 3,2,1,4

3,1,2,4



17
Which protocol should be chosen to support WAN connectivity in a multi-vendor system and provide strong security through authentication?

NAT with DHCP

Frame Relay

HDLC with encryption

HDLC with CHAP

PPP with PAP

*** PPP with CHAP



18
Which of the following are valid steps for a basic ISDN BRI configuration? (Choose two.)

create subinterfaces

define the LMI type

*** set the SPIDs if required by the ISDN switch

set the interface DLCI

*** set the switch type

specify the encapsulation as either Cisco or IETF



19
A branch office reports excessive connect time charges for an ISDN circuit used to connect to the regional office. Upon investigation of this issue, it is discovered that when an ISDN connection is initiated to the regional office it remains connected for an excessive amount of time. Which of the following configuration changes could be made to DDR on the router to reduce these connect time charges?

use PPP multilink

lower idle timer setting

use CHAP authentication

*** change DDR from legacy to dialer profiles



20
A network administrator is having difficulty in establishing a serial link between a Cisco router and a router from another vendor. Both routers are configured for HDLC encapsulation. Which statements are true regarding this configuration? (Choose two.)

*** The Cisco HDLC frame uses a proprietary "Type" field that may not be compatible with equipment of other vendors.

HDLC requires a clock rate to be configured on the routers at both ends of the serial link.

*** PPP encapsulation is recommended for serial links between equipment from multiple vendors.

Usernames must be configured at both ends of the HDLC serial link.

The HDLC vendor type must be enabled on the Cisco router.

There is a mismatch in the HDLC authentication password configurations.



21


Given the partial router configuration in the graphic, why does the workstation with the IP address 192.168.1.153/28 fail to access the Internet? (Choose two.)

*** The NAT inside interfaces are not configured properly.

The NAT outside interface is not configured properly.

*** The router is not properly configured to use the access control list for NAT.

The NAT pool is not properly configured to use routable outside addresses.

The access control list does not include the IP address 192.168.1.153/28 to access the Internet.



22


The serial PPP link between the Left and Right routers is configured as shown in the diagram. Which configuration issue will prevent IP traffic from crossing this link?

The passwords must be different for the CHAP authentication.

The usernames are misconfigured.

The clock rate must be 56000.

The clock rate is configured on the wrong end of the link.

*** The IP addresses must be on the same subnet.

Interface serial 0/0 on Left must connect to interface serial 0/1 on Right.



23
What causes a DDR call to be placed?

dial string

DLCI

idle time out

*** interesting traffic

PVC



24
Which two layers of the OSI model are described by WAN standards?

Application Layer, Physical Layer

*** Data Link Layer, Physical Layer

Data Link Layer, Transport Layer

Physical Layer, Network Layer



25


A technician is testing RouterA in the graphic. What is the condition of the circuit?

The routers are configured for different encapsulations.

*** The clock rate is not properly configured on the routers.

The circuit from WAN provider has failed.

Authentication is not properly configured on the routers.

The circuit is functioning properly.



26
A network administrator must provide WAN connectivity between a central office and three remote sites: Orlando, Atlanta, and Phoenix. The Orlando and Atlanta remote offices receive sales orders and transmit shipping confirmations to the Central office consistently throughout the day. The Phoenix remote office consists of one salesperson traveling through the southwest territory. The salesperson occasionally needs to connect to the Central office for e-mail access. How should the network administrator connect the remote sites to the Central office? (Choose two.)

*** Connect to the Atlanta and Orlando remote offices with Frame Relay connections.

Connect to the Atlanta and Orlando remote offices with ISDN connections.

Connect to the Atlanta and Orlando remote offices with POTS dial-up connections.

Connect to the Phoenix remote office with a Frame Relay connection.

*** Connect to the Phoenix remote office with a POTS dial-up connection.



27
When a Frame Relay switch detects an excessive buildup of frames in its queue, which of the following may occur? (Choose two.)

*** Frames with the DE bit set are dropped from the switch queue.

Frames with the FECN and BECN bits set are dropped from the switch queue.

Frames in excess of the CIR are not accepted by the switch.

The switch sets the FECN bit on all frames it places on the congested link and sets the BECN bit on all frames it receives on the congested link.

*** The switch sets the FECN bit on all frames it receives on the congested link and sets the BECN bit on all frames it places on the congested link.



28


A system administrator is troubleshooting a connectivity issue between two routers in a new installation. The administrator enters the debug ppp authentication command on the WHSE router. The graphic shows a part of the output received. From this output, what is the most likely cause of this connectivity issue?

There is not a route to the remote router.

The ISDN circuit on the remote router has failed.

*** The username/password was not properly configured on the WHSE router.

The remote router has a different authentication protocol configured.



29
What does the output of the show frame-relay map command shown below represent? (Choose two.)
Serial 0 (up): ip 172.30.151.4 dlci 122, dynamic, broadcast, status defined, active

*** 172.30.151.4 represents the IP address of the remote router.

172.30.151.4 represents the IP address of the local serial interface.

DLCI 122 represents the interface of the remote router.

broadcast indicates that a dynamic routing protocol such as RIP v1 can send packets across this PVC.

*** dynamic indicates that a dynamic routing protocol is enabled for this connection.

active indicates that the ARP process is working.



30
What does the status inactive indicate in the output of the show frame-relay pvc command?

*** The DLCI is programmed in the switch but is not usable.

The DLCI was formerly programmed in the switch but is no longer there.

The DLCI is usable but has little activity.

The DLCI has been renamed for that PVC.


31
Which of the following IP addresses are defined by RFC 1918 as private addresses? (Choose three.)

*** 192.168.146.0/22

172.10.25.0/16

*** 172.31.0.0/16

20.0.0.0/8

*** 10.172.92.8/29



32
After configuring a dialup ISDN circuit, a network associate begins testing the dialup connection. When attempting to ping a host on the remote network, the local router does not attempt to dial the remote access server. Which of the following are possible errors in this configuration? (Choose three.)

PPP authentication is not properly configured.

*** No dialer map is configured.

The ISDN circuit connected to the remote access server is busy.

*** No interesting traffic is defined.

No route is determined to the remote network.

*** A wrong number is configured in the dial string.



33
Two routers are connected through a Frame Relay, point-to-point PVC. The remote router is from a vendor other than Cisco. Which interface command is required to configure the link between the Cisco router and the other router?

frame-relay pvc multipoint

frame-relay pvc point-to-point

encapsulation frame-relay cisco

*** encapsulation frame-relay ietf

frame-relay lmi-type ansi



34
Which circuit-switched WAN technology is often used to provide a backup for a leased line and additional capacity during peak usage times?

X.25

DSL

*** ISDN

cable modem



35
After the ISDN BRI interface is configured, which command can be used to verify that the router is communicating correctly with the ISDN switch?

show dialer

show isdn status

*** show interfaces bri0/0:1

show interfaces serial0/0.1



36
A system administrator needs to configure the regional office with ISDN for DDR connections to three remote sites. Each remote site requires different IP subnets, different encapsulations, and different authentication methods. The sites will not be connected at the same time. The company would like to accomplish this in the most cost effective manner. What method can the system administrator use to accomplish this task using the fewest B channels?

Install and configure a PRI.

Install and configure a BRI interface with separate SPIDs for each remote site.

Install and configure a BRI with multiple switch types in global configuration.

*** Install and configure a BRI using dialer profiles.

Install and configure a separate BRI for each remote site.



37
A system administrator must provide Internet connectivity for ten hosts in a small remote office. The ISP has assigned two public IP addresses to this remote office. How can the system administrator configure the router to provide Internet access to all ten users at the same time?

Configure static NAT for all ten users.

*** Configure dynamic NAT for ten users.

Configure dynamic NAT with PAT.

Configure DHCP and static NAT.

What the administrator wants to do cannot be done.



38
Which of the following are characteristics of Frame Relay? (Choose two.)

circuit-switched

*** connection oriented

OSI Layer 3

*** packet-switched

reliable



39
Which of the following is the order for the three phases of establishing a PPP serial link with authentication?

authentication, link-establishment, network layer protocols

authentication, network layer protocols, link-establishment

network layer protocols, link-establishment, authentication

network layer protocols, authentication, link-establishment

*** link-establishment, authentication, network layer protocols

link-establishment, network layer protocols, authentication