JN0-102 · Question #389
Which command causes the Junos OS to temporarily activate a configuration?
The correct answer is D. commit confirmed. The commit confirmed command temporarily activates a Junos configuration and automatically rolls it back if the administrator does not explicitly confirm it within a specified timeframe. This prevents device lockout due to erroneous configuration changes.
Question
Which command causes the Junos OS to temporarily activate a configuration?
Options
- Acommit and-quite
- Bcommit synchronize
- Ccommit check
- Dcommit confirmed
How the community answered
(62 responses)- A3% (2)
- B2% (1)
- C2% (1)
- D94% (58)
Why each option
The `commit confirmed` command temporarily activates a Junos configuration and automatically rolls it back if the administrator does not explicitly confirm it within a specified timeframe. This prevents device lockout due to erroneous configuration changes.
`commit and-quit` saves the configuration and exits configuration mode, making it a permanent change.
`commit synchronize` is used in redundant systems to ensure the configuration is committed to both Routing Engines simultaneously.
`commit check` verifies the syntax and semantics of the configuration without actually activating it.
The `commit confirmed` command applies a configuration but requires a follow-up `commit` (or `commit check`) within a default 10-minute period. If confirmation is not received, the system automatically rolls back to the previous configuration, preventing potential lockout.
Concept tested: Junos OS confirmed commit
Source: https://www.juniper.net/documentation/us/en/software/junos/cli/topics/concept/cli-rolling-back-configuration.html
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