What is the primary function of commits in Junos?

The primary function of commits in Junos is to apply configuration changes. When a user makes modifications to the configuration in Junos, these changes exist in a candidate configuration state which is not active until it is committed. The commit process takes the changes from the candidate configuration and applies them to the active configuration running on the device. This ensures that the configuration is applied consistently and enables the network administrator to review and edit configurations without affecting the live network until the commit is executed.

This commit feature allows for a careful approach to configuration management, including the ability to validate changes before they take effect and to roll back to the previous configuration if necessary should issues arise post-commit. This is crucial for maintaining network stability and operational integrity. The other options address tasks that are either not directly related to the commit process or refer to actions that Junos performs as part of its operational functionalities rather than the specific task of committing configuration changes.