单选题After making changes to the router, you issue the "copy running-config startup-config" command to save changes. After reloading the router, the router comes up in setup mode. You again make changes, save them, and reboot. Again,the router comes up in s

题目

单选题

After making changes to the router, you issue the "copy running-config startup-config" command to save changes. After reloading the router, the router comes up in setup mode. You again make changes, save them, and reboot. Again,the router comes up in setup mode. What is the most likely cause of this?（）

The NVRAM is corrupted.

The boot system commands were omitted in the configuration.

The configuration register setting is incorrect.

The upgraded configuration incompatible with the hardware platform.

The upgraded IOS incompatible with the hardware.

参考答案和解析

正确答案： A

解析：暂无解析

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相似问题和答案

第1题：

After implementing EIGRP on your network, you issue the show ip eigrp traffic command on router C. The following output is shown:What information can you determine about this network?()

A. The network is stable

B. There is a flapping link or interface, and router C knows an alternate path to the network

C. There is a flapping link or interf ace, and router C does not know an alternate path to the network

D. EIGRP is not working correctly on router C

E. There is not enough information to make a determination

参考答案：B

第2题：

After attempting to telnet into a router, you are denied and you receive the error message "password required, but none set." What configuration changes will allow telnet access into this router?()

参考答案：C

第3题：

After working all night and successfully configuring a Cisco router for the Ezonexam network you save your changes on the startup config, reboot the router, and go out for a cigarette. When you return, none of your changes are active and the router boots to the initial configuration mode! Which of the choices below indicates the source of your problem?

A．Hardware failure in NVRAM prevents the router from loading the config

B．Startup-config in flash is corrupt and cannot be analyzed

C．Router configuration-register set to bypass startup configuration

D．Startup-config in NVRAM is corrupt and cannot be analyzed

E．None of the above

正确答案：C
解析：Explanation:
The default configuration-register setting of 0x2102 loads the IOS from flash and the configuration from NVRAM.
However, for password recovery, you can set the register to 0x2142 and the startup-config file in NVRAM will be bypassed. The problem described here is that the config register was not changed back to 0x2102 before the router was rebooted, so the active configuration is bypassed. Simply setting the config register back to 0x2102 will fix this problem.

Incorrect Answers:
A, B, D. All of these describe hardware or software errors. In the event that this is the problem, errors will be generated and the router will fail to boot properly. In these cases, the router will not return to the initial startup configuration.

第4题：

A. The NVRAM is corrupted.

B. The boot system commands were omitted in the configuration.

C. The configuration register setting is incorrect.

D. The upgraded configuration incompatible with the hardware platform.

E. The upgraded IOS incompatible with the hardware.

参考答案：C

第5题：

After logging into the RtrB router, you issue the "show interface" command as displayed below:After considering the effects of the command output illustrated in the exhibit above,which of the following protocols are operational on the serial link?（）

A. PPP

B. IP

C. Compression

D. IPX

E. Multilink

F. ATX

参考答案：A, B

第6题：

After implementing EIGRP on your network, you issue the show ip eigrp traffic command on router C. The following output is shown:What can you conclude about this network? ()

A. The network has been stable for at least the last 45 minutes

B. There is a flapping link or interf ace, and router C knows an alternate path to the network

C. There is a flapping link or interface, and router A does not know an alternate path to the network

D. EIGRP is not working correctly on router C

E. There is not enough information to make a determination

参考答案：A

第7题：

While troubleshooting a network connectivity issue, you suspect that a router may be missing a route, or may be receiving bad routing information to a destination. What command should you issue to view the route that the router will use to reach a given destination?（）

A. ping

B. trace

C. show ip route

D. show interface

E. show cdp neighbors

参考答案：C

第8题：

After editing to your device’s configuration, which command must you enter to activate the configuration changes?()

A. set

B. copy candidate active

C. apply-config

D. commit

参考答案：D

第9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

参考答案：A

第10题：

While troubleshooting a network problem,a technician discovers that the current copy of the Cisco IOS is outdated and needs to be updated.Which of the following commands would the technician issue to replace the Cisco router IOS with the newer version?（）

A. Router#copy tftp flash

B. Router(config)#restore flash

C. Router(config)#repair flash

D. Router#copy flash run

E. Router>copy start flash

F. Router#copy start flash

参考答案：A

After making changes to the router, you issue the "copy runn

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