Dual-machine hot standby system version upgrade is a common operation and maintenance operation in the existing network. After the upgrade is completed, which of the following information needs to…

Question

Options

• ASession table
• BEquipment operating status
• CVersion information
• DLicense information

• A
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Explanation

All four options are correct because a successful dual-machine hot standby upgrade requires verifying multiple dimensions of system health. Version information (C) confirms both the active and standby nodes are running the target software build. Equipment operating status (B) validates that both machines are online, the hot standby relationship is established, and no hardware or software faults were introduced by the upgrade. Session table (A) confirms that active service sessions synchronized correctly between nodes - a failed sync here means traffic could be dropped during a failover even if the upgrade appears complete. License information (D) must be checked because new software versions may introduce features or capacity thresholds that require updated license entitlements, and an incompatible or expired license can silently disable functionality.

Since all choices are correct, there are no distractors - the question tests whether you know the full verification checklist, not just the obvious steps.

Memory tip: Use the acronym SVLE - Sessions, Version, License, Equipment status - to remember all four post-upgrade checks. Think of it as "Safe to go Live? Verify Last Everything."

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