問題文
A change has already been committed and the operator now wants the device to run the configuration that was active immediately before that commit. Which sequence does that?
選択肢
- Issue rollback 1 to load the previous committed configuration into the candidate, then commit it.
- Delete the whole hierarchy and enter the previous statements again.
- Issue rollback 1, which by itself returns the device to the previous configuration and therefore makes a further commit unnecessary.
- Issue rollback 0 and then commit, because the numbering starts at zero and the entry numbered zero is therefore the configuration that was active before the most recent commit was applied to the device.