Following an emergency vulnerability disclosure, a network engineering team must apply a critical operating system patch to a high-availability core switch cluster without causing network downtime. Which of the following procedures should the team execute to ensure continuous service availability and full recovery capability during this maintenance operation? (Select TWO).
- Perform a rolling upgrade by patching the standby secondary chassis first and validating traffic failover prior to patching the active primary chassis.Cevap
- Verify out-of-band management connectivity and capture verified system configuration and firmware image backups before initiating the installation.Cevap
- CApply the software update simultaneously across both active and standby nodes to prevent configuration state synchronization mismatches.
- DRely on incremental configuration backups taken during the maintenance window rather than full system state and image archives.
Cevap
The correct procedures are executing a rolling upgrade by updating the standby node first while verifying failover, and establishing out-of-band management access alongside complete configuration and image backups prior to update initiation.
To maintain zero downtime in high-availability enterprise environments, patch management protocols require rolling upgrades (updating the standby unit first, testing failover, then updating the active unit). Additionally, operational best practices dictate verifying out-of-band management pathways and taking complete image and configuration snapshots before modifying production software to guarantee rollback capability.
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High-Availability Rolling Upgrades and Pre-Patch Risk Mitigation