Implementing and Operating Cisco Data Center Core Technologies (DCCOR) — Question 454

A network engineer must restore the running configuration on a Cisco Nexus 5000 Series Switch to an existing snapshot called `stable1`. The restore procedure should proceed only if no errors occur. Which configuration should be used to accomplish this goal?

Answer options

• A. rollback running-config checkpoint stable1 best-effort
• B. rollback running-config checkpoint stable1 atomic
• C. rollback checkpoint stable1 best-effort running-config best-effort
• D. rollback checkpoint stable1 best-effort running-config atomic

Correct answer: B

Explanation

The correct answer is B because using 'atomic' ensures that the restore will only complete if there are no errors, thereby maintaining configuration integrity. Option A uses 'best-effort', which may allow partial application of the configuration even if errors occur. Options C and D are incorrect as they do not follow the required syntax for restoring the running configuration with error checking.