单项选择题

How do you ping from configuration mode?（）

A. [edit interfaces]   user@router# run ping 1.1.1.1
B. [edit interfaces]   user@router# ping 1.1.1.1
C. [edit interfaces]   user@router# up ping 1.1.1.1
D. [edit interfaces]   user@router# exit ping 1.1.1.1

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By default, which character indicates the UNIX shell prompt?（）

A. #
B. >
C. $
D. %

单项选择题

By default, which character indicates the configuration mode prompt?（）

A. #
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Which statement is true about the forwarding plane?（）

A. It uses ASICs for increased performance.
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C. It maintains the routing tables.
D. It is based on an x86 architecture.