单项选择题

You enter configuration mode with the configure command. You need to abort the changes that you have made and start again with a fresh copy of the active configuration. Which command should you use?（）

A.rollback 0
B.load active
C.reset config
D.clear candidate config

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相关考题

单项选择题

You are the top of the hierarchy in configuration mode. How would you save your configuration to a file on the router?（）

A.save configuration <filename>
B.save config <filename>
C.save <filename>
D.save run <filename>

单项选择题

What information does the help topic command provide?（）

A.router’s version and serial number to help open a case with JTAC
B.software documentation describing features and configuration tasks within JUNOS
C.a brief description of commands and their default values
D.a verification of the current configuration on the router

单项选择题

The auto-complete feature in the JUNOS CLI is triggered by which method?（）

A.space bar for both command and variable completion
B.space bar for command completion；tab key for variable completion
C.space bar for variable completion；tab key for command completion
D.tab key for variable and command completion；space bar for command completion