Which of the following describes the error of the three-level rollback function supported by iMaster NCE-Fabric?

Question

Options

• ANetwork-wide rollback allows you to roll back the entire network configuration to before the
• BThe three-level rollback function supports manual backup and automatic backup, and supports
• CTenant snapshots are backups and restores of the network at tenant granularity
• DService rollback supports single-point service recovery

• A
  4% (2)
• B
  75% (39)
• C
  6% (3)
• D
  15% (8)

Explanation

Option B is the answer containing an error because the three-level rollback function in iMaster NCE-Fabric does not support both manual and automatic backup as B claims - network snapshots must be manually triggered, so stating that automatic backup is also supported is factually incorrect. Options A, C, and D each accurately describe one of the three rollback levels: network-wide rollback restores the entire network configuration, tenant snapshots provide backup and restore at tenant granularity, and service rollback enables single-point service recovery for a targeted fix without affecting the broader network. The three levels are designed to operate at progressively narrower scopes - network, tenant, and service - giving operators flexible recovery options depending on the blast radius of an issue.

Memory tip: Think of the three levels as zoom levels on a map - network-wide (whole country), tenant snapshot (city), service rollback (single building). B breaks the rule because it adds a capability (automatic backup) that the system does not actually offer for snapshots, making it the odd one out.

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