Which command will save the current active configuration as the rescue configuration?
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A. B. C. D.B
The correct answer is option A: user@router# save | rescue.
Explanation:
In Junos OS, the rescue configuration is a backup copy of the configuration that can be used to restore the device to a known working configuration in case of a configuration error or software failure.
To save the current active configuration as the rescue configuration, you need to use the "save" command along with the pipe symbol "|" and the "rescue" keyword. This will create a backup copy of the current configuration and store it as the rescue configuration. The rescue configuration is saved in a separate partition on the device's storage media and is not overwritten by subsequent configuration changes or upgrades.
The other answer options are incorrect:
B. user@router> request system configuration rescue save - This command will save the current active configuration as a backup configuration, not the rescue configuration. The backup configuration is a copy of the configuration that can be used for disaster recovery scenarios.
C. user@router# save rescue configuration - This command is invalid and will generate an error message.
D. user@router> file save rescue-configuration - This command will save the configuration to a file named "rescue-configuration" in the file system. It will not create a rescue configuration.