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单项选择题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

  • A

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