CCNA认证考试最新真题

41: You have powered up your Cisco 3640 router. The first thing you see is this output. Which of the following statements about this screen is accurate (see figure above)?

A. Your IOS is corrupt and unable to load.

B. Your configuration is missing parameters.

C. You do not have a configuration saved in NVRAM.

D. You have typed setup in the Privileged mode.
 
42: You type in a command and are shown the following output:

% Ambiguous command: "show con"

 What does this mean?

A. You did not enter enough characters for your device to recognize the command.

B. You did not enter all the keywords or values required by this command.

C. You entered the command incorrectly.

D. Context-sensitive help is unable to help you with this command.
 
43: You are typing a command into the Cisco IOS. It is more than one terminal line long. What will the IOS do?

A. The router automatically moves the cursor to the next line and uses a caret (^) to indicate the line break.

B. The router truncates the command because commands longer than one line are not allowed.

C. The router automatically scrolls the line to the left and uses a dollar sign ($) to indicate that there is text to the left of the $.

D. The router shortens all the commands to squeeze the command on to the screen.
 
44: You want to change the size of the command history buffer. Which of the following commands will set it permanently to 100?

A. Router1#terminal history 100

B. Router1#history size 100

C. Router1(config)#terminal history 100

D. Router1(config-line)#history size 100
 
45: You have configured a description on your serial interfaces. Which of the following commands displays the description? (Choose two.)

A. Show running-config

B. Show flash

C. Show interfaces

D. Show ip protocols
 
46: You are typing commands into your Cisco IOS on your 3640 router. However, your typing is consistently interrupted by console messages, forcing you to retype. Which of the following commands forces the IOS to retype your original input after it displays the console message?

A. Exec-timeout

B. Logging synchronous

C. Line console

D. Exec message readout
 
47: You are configuring a router and issue the command interface ethernet 1/0/0. What do the numbers represent?

A. Slot/port/interface

B. Slot/interface/port

C. Port/slot/port number

D. Slot/port adapter/port number
 
48: Which of the following commands correctly sets the physical speed of a serial interface to 64Kbps?

A. Router1(config-if)#bandwidth 64

B. Router1(config-if)#bandwidth 64000

C. Router1(config-if)#clockrate 64

D. Router1(config-if)#clockrate 64000
 
49: In what mode do you use the encapsulation command?

A. Interface Configuration mode

B. Sub-interface Configuration mode

C. User mode

D. Privileged mode
 
50: You are configuring your router, and your boss happens to look over your shoulder as you type a show running-config command. She sees one of the lines that says password 7 14361F009A056E7D and asks what this means. What do you tell her?

A. It is the actual password.

B. It is the result of a service password-encryption command.

C. The console output made a mistake.

D. It is the result of an enable secret command.

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