單項選擇題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?（）

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


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2.多項選擇題What kind of information can you deduce from an IOS image file name?（）

A. Distribution channel failures
B. Feature capabilities
C. Memory capacity needs
D. Hardware product platform
E. Programming language requirements
F. Run location and compression status

3.單項選擇題After issuing the "show version" command on your Cisco router, you notice that the image is named "C7200-ajs40-mx". What does the C7200 portion of the filename represent?（）

A. The memory capacity requirements
B. The hardware product platform
C. The distribution channel
D. The feature capabilities
E. The run location and compression status

4.單項選擇題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

5.單項選擇題

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.