[单选题]After logging into a router and typing in a few show commands, you press the up arrow key. What will this do?

正确答案 ：A

It will recall the previous command line

解析：解析：Explanation:

[单选题]在启用IGRP协议时，所需要的参数是：()

正确答案 ：C

自治系统号

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