Which command prompt indicates that you are in operational mode?
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A. B. C. D.D
The correct answer is B. user@router#
Explanation:
Junos OS has two modes, configuration mode and operational mode. Operational mode is used to monitor and troubleshoot the network and devices while configuration mode is used to configure devices. The command prompt in operational mode is different from the prompt in configuration mode.
When you first log in to the device, you will be in operational mode. The prompt in operational mode consists of the username followed by the hostname of the device, and ends with the pound sign (#). The prompt will look like this: user@router#
In configuration mode, the prompt will end with a greater than sign (>). The prompt will look like this: user@router>
The percent sign (%) is used in other contexts such as the CLI command hierarchy prompt (for example, routing-options%), or when entering a statement that spans multiple lines (for example, the more prompt).
In conclusion, the command prompt that indicates that you are in operational mode is B. user@router#.