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

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

选项 A、It will recall the previous command line
B、It will move the cursor one line up
C、It will redisplay the current command line
D、It will capitalize the command line
E、None of the above

答案A

解析 Explanation:
The up arrow key is used to recall the previous command line entry. The commands that were entered previously can be displayed by repeatedly pressing the up arrow key, or by entering the "show history" command.

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

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