You have configured some interfaces on a Junos device; however, you have not yet committed the configuration. What happens if you issue the rollback 0 command in this scenario?

The correct answer is D. The interface changes you made are discarded. In Junos OS, issuing the rollback 0 command reverts the candidate configuration to the last committed configuration. If you have made changes to some interfaces but have not committed those changes, using rollback 0 will discard these uncommitted changes, reverting to the state…

Configuration Basics

Question

Options

AThe messages.log file is deleted.
BThe factory default configuration is loaded.
CThe Junos device is rebooted.
DThe interface changes you made are discarded.

How the community answered

(27 responses)

A
4% (1)
B
11% (3)
C
7% (2)
D
78% (21)

Explanation

In Junos OS, issuing the rollback 0 command reverts the candidate configuration to the last committed configuration. If you have made changes to some interfaces but have not committed those changes, using rollback 0 will discard these uncommitted changes, reverting to the state of the configuration at the time of the last commit. This command does not affect system files like messages.log, reboot the device, or load the factory default configuration; it simply undoes uncommitted changes.

Topics

#rollback 0#uncommitted changes#configuration management

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