单选题You wish to upgrade the IOS of a router without removing the image currently installed.What command will display the amount of memory that is being used by the current IOS image and whether there is enough room available to hold both the current and ne

题目

单选题

You wish to upgrade the IOS of a router without removing the image currently installed.What command will display the amount of memory that is being used by the current IOS image and whether there is enough room available to hold both the current and new images?（）

Router# show version

Router# show flash

Router# show memory

Router# show buffers

Router# show running-config

All of the above

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相似问题和答案

第1题：

Why might the Ezonexam network administrator set the configuration register to 0x2142 on a 2600 series Cisco router?

A．To boot the IOS from ROM

B．To reset the console password

C．To upload a new version of the configuration file

D．To upload a new version of the IOS

E．To allow a new memory upgrade to be recognized by the router

正确答案：B
解析：Explanation:
About 99 percent of the time someone uses a config-register, it's more than likely because of a lost router password. The two config-registers for recovering passwords are 0x2102 and 0x2142.

The first config-register, 0x2102, is the normal config-register if you boot the router from internal Flash. You can see this config-register by using the show version command.

In this output, you'll notice the last line says, "Configuration register is 0x2102." This is normal.

But let's say you forgot the router's password. To recover this password (as long as it's unencrypted), boot the router and bypass the startup-config using config-register 0x2142; you should then be able to see the password in the startup-config. You can use the same method for encrypted passwords, but you'll need to overwrite the original password with a new one. To change the configuration register, enter the following:
Router(config)# config-register 0x2142

This will instruct the router to bypass the configuration and boot up as if it were a brand new router using factory default settings.

第2题：

Which major J－Web menu should you use to upgrade the JUNOS software on the router?()

A. Monitor

B. Manage

C. Diagnose

D. Configuration

参考答案：B

第3题：

After working on a router, some problems arise and you wish to view the commands that you recently entered. Which IOS command opens the history buffer and displays the most recently entered commands?

A. Show history

B. Show buffers

C. Show typed commands

D. Show terminal buffer

E. Show command

F. None of the above

正确答案：A
A 解析：Explanation:
The router will buffer previously entered commands. By default, the "show history" command will display the previous ten commands that were entered. To see the contents of the buffer you enter the show history command.

Incorrect Answers:
B. This command will show the memory buffer information
C, D. These are invalid commands.

第4题：

You need to upgrade the IOS of an existing router on your network. The new IOS image is located on a TFTP server that you have set up within the network. What command should you issue in order to download the new IOS version?（）

A、Router# copy tftp flash
B、Router# copy flash run
C、Router(config)# restore flash
D、Router(config)# repair flash
E、Router#copy flash tftp
F、Router# copy start flash

正确答案:A

第5题：

A. Router# show version

B. Router# show flash

C. Router# show memory

D. Router# show buffers

E. Router# show running-config

F. All of the above

参考答案：B

第6题：

You are logged into a router and wish to view the layer 3 information about your neighboring Cisco routers. What IOS command gives layer 3 information for of the directly connected router interfaces?

A. show ip links

B. show cdp neighbor

C. show cdp neighbor detail

D. show ip clients

E. show ip route

F. None of the above

正确答案：C
C 解析：Explanation:
To display detailed information about neighboring devices discovered using Cisco Discovery Protocol (CDP), use the show cdp neighbors privileged EXEC command.

Detail - (Optional) Displays detailed information about a neighbor (or neighbors) including network address, enabled protocols, hold time, and software version.

Incorrect Answers:
A, D. These are invalid commands.

B. The "show cdp neighbor" command, without the "detail" keyword will not display the additional layer 3 protocol information.

E. This will show all routes from all other routers within the domain. We wish to see information from just the direct interface neighbors.

第7题：

You‘re working at TestKing as a network administrator when your MCSE assistant calls you for help. He has attempted to configure Router TK1 and incorrectly configured the router interface with a subnet broadcast address. You have to correct this by first removing the incorrect IP address and then re-entering the first usable IP address of the same subnet.How will you do this?（）

参考答案：A

第8题：

You have just purchased a brand new router and wish to have the router prompt you through the initial configuration commands. Which router mode does this describe?

A．ROM Monitor mode

B．SETUP mode

C．Autoflash mode

D．RXBOOT mode

E．None of the above

正确答案：B
解析：Explanation:
Setup mode is a convenient mode that walks you through the setup procedure by prompting you with specific questions and options one by one.

第9题：

A. Router# copy tftp flash

B. Router# copy flash run

C. Router(config)# restore flash

D. Router(config)# repair flash

E. Router#copy flash tftp

F. Router# copy start flash

参考答案：A

第10题：

You have just purchased a brand new router and wish to have the router prompt you through the initial configuration commands. Which router mode does this describe?（）

A、ROM Monitor mode
B、SETUP mode
C、Autoflash mode
D、RXBOOT mode
E、None of the above

正确答案:B

You wish to upgrade the IOS of a router without removing the

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