技术人员为什么要输入命令 copy startup-config running-config？（)

A、发出 reload 命令，但不保存运行配置

B、删除 vlan.dat 文件并重新启动设备

C、关闭并重新打开终端仿真软件

D、发出 copy startup-config running-config 命令

保存路由器的配置使用的路由命令是( )

A.write

B. copy startup-config running-config

C.Save

D. copy tftp running-config

下列哪一条命令是用来保存交换机的配置信息()

A.write

B.Copy running-config startup-config

C.Write NVRAM

D.Copy startup-config running-config

为查看控制器状态，你需要输入哪个命令?（）

A.show running-config

B.show startup-config

C.show version

D.show controllers

为查看配置注册表设置，你需要输入哪个命令（）

A.show running-config

B.show startup-config

C.show version

D.show controllers

A.Switch#

B.Switch（config）#

C.Switch（config-if）#

D.Switch（config-line）#

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?（）

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.

A Cisco router has been configured, and the copy running-config startup-config command has been issued. When the router is power cycled, the router prompts with:"Would you like to enter the initial configuration dialog? [yes/no]"Why has this occurred?（）

A. There is an error in the router DRAM.

B. Te IOS image is corrupt.

C. The configuration register is set to 0x2142.

D. The TFTP server that contains the router configuration file is unreachable.

E. A boot system configuration command has placed the router into setup mode.

什么命令允许你查看RAM中的配置（）

A.show startup-config

B.show RAM-config

C.show running-config

D.show config

以下哪个命令可以保存路由器RAM中的配置文件到NVRAM中()。

A.copy running-config tftp

B.copy startup-config tftp

C.copy running-config startup-config

D.copy startup-config running-config