26. Which of the following are not WAN protocols? Choose 2

A. Frame Relay
B. ATM
C. Ethernet
D. FDDI
E. ISDN

Ethernet and FDDI are LAN protocols.

27. Which of the following will allow you to view NVRAM s contents?

A. show configuration
B. show protocols
C. show version
D. show running-config
E. show startup-config

Answer A E. These show the backup configuration stored in NVRAM.The other anwsers allow youto view RAM.

28. Which of the following contains the OS image?

A. Flash
B. NVRAM
C. RAM
D. Interfaces

ROM will be used if Flash is unavailable. NVRAM is the backup configuration, and RAM is the active configuration

29. Which of the following indicates the router is in privilege mode?

A. Router#
B. Router>
C. Router-
D. Router*

Answer B shows the router in user mode.

30. What does "show cdp neighbors" not show? Neighbors_________

A. device id
B. hardware platform
C. ios version
D. port type and number

31. Which of the following will show you the clock?

A. cl?
B. Cl ?
C. Clock?
D. Clock ?

By typing this the router will finish the command and show the clock.

32. CDP operates at which layer?

A. Transport
B. Network
C. Data link
D. Physical

CDP allows a network device to exchange frames with other directly connected networked devices.

33. Which command does not show two devices are not routing packets between them successfully?

A. ping
B. show interface
C. trace
D. telnet

Answer A C D. With these commands you can tell whether or not you have communication.Show interface just verifies there is a connection

34. What keystrokes shows the possible commands in privilege mode?

A. hel

p
B. h
C. ctrl+h
D. ?

Answers A and B will give a brief description when typed, and C is not valid.

35. Which two items contain versions of the router s configuration file?

A. flash
B. nvram
C. ram
D. rom

A and D contain the OS.

36. Which of the following commands will allow you to review the contents of RAM?
A. show configuration
B. show protocols
C. show version
D. show running-config
E. show startup-config

A and E allow you to see NVRAM.

37. Which of the following will allow you to add, modify,or delete commands in the startup configuration file?

A. show startup-config
B. show running-config
C. configure terminal
D. configure memory

Answer C allows you to change items in the running configuration file

38. Which command would be used to restore a configuration file to RAM? ________TFTP running-config

A. router#copy
B. router>copy
C. router*copy
D. router^copy

You must be in privilege mode when executing this, which is why you see the # sign.

39. Which of the following commands will display the running configuration file to a terminal?

A. show running-config
B. show router-config
C. router#show flash
D. router>show version

It can only be shown in privilege mode.

40. If you need to copy the currently executing configuration file into NVRAM,which command would you use?

A. router#copy startup-config running-config
B. router#copy startup-config TFTP
C. router#copy running-config startup-config
D. router>copy startup-config running-config

Answers ABC show that the router is in privilege mode which is necessary to complete this action, but only C shows the correct syntax.

41 Which of the following commands would not set a password on a Cisco router?

A. router(config)#enable secret
B. router(config-line)#password test

C. router(config)#service encryption password
D. router(config)#enable password

This command is used to encrypt passwords in configuration files.

42. Which of the following would cause a router to boot into the initial configuration dialog after powering has cycled?

A. Someone had copied the startup configuration file in a TFTP server
B. The running configuration file was copied to the startup configuration file
C. It is the first time router has ever been turned on
D. The write erase command was executed immediately before powering down the router.

These two scenarios describe what will happen when the router needs to use NVRAM to boot if it cannot find the configuration file.

43. What would cause a router to boot from ROM?

A. 0x3202
B. 0x2302
C. 0x2101
D. 0x2103

A configuration register of 1 or 0 will cause the router to boot from ROM.

44. Where does the running config file exist?

A. NVRAM
B. ROM
C. RAM
D. Flash

This file is erased if the router is reloaded or rebooted.

45. How do you back up a router?

A. router#copy running-config startup-configuration
B. router(config)#copy TFTP flash
C. router#copy flash TFTP
D. router#copy flash NVRAM

You can copy the file to a TFTP server or other storage device.

46. Which of the following is not valid?

A. router>show version
B. router#show running-config
C. router#show startup-config
D. router#show RAM

Answer D.

47. Which of the following are basic router functions?

A. Packet switching
B. Packet filtering
C. Path determination
D. Rapid convergence

Packets get switched once they are determined by the router where to go.

48. Which of the following is not an interior routing protocol?

A. RIP
B. IGRP
C. OSPF
D. BGP

BGP is an exterior routing protocol designed to communicate between autonomous systems.

49. Which of the following routing protocols communicate router information by sending the state of it s links to all routers in it s domain?

A. BGP
B. RIP
C. IGRP
D. OSPF

This is a "link state" routing protocol. RIP and IGRP are distance vector,and BGP communicates reachability between domains.

50. What is a problem caused by distance vector routing protocols?

A. Split horizon
B. Route Poison
C. Counting to infinity
D. Max hop count
E. Hold down timers

Answers ABDE are counter measures to the counting to infinity problem caused by distance vector protocols.

时间：2007-04-21 05:04:05.0