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Difficulty: MediumPatch Management and Software Maintenance

A network administrator needs to update the firmware on 50 wireless access points deployed across a large corporate campus. To mitigate the risk of widespread network downtime in the event that the new firmware introduces instability, which of the following patch deployment strategies should the administrator implement?

  1. Perform a pilot update on a small group of non-critical access points and evaluate stability before upgrading the remaining devices.Answer
  2. B
    Deploy the firmware update simultaneously to all access points during business hours to immediately identify device failures.
  3. C
    Apply the new firmware image directly to the wireless access points without preserving a copy of the current running configuration or previous firmware version.
  4. D
    Temporarily disable access control lists and authentication protocols on the access points to decrease firmware installation time.

Answer

Perform a pilot update on a small group of non-critical access points and evaluate stability before upgrading the remaining devices.
Executing a pilot deployment on a small subset of non-critical access points ensures that any unforeseen firmware bugs or incompatibilities are discovered with minimal operational impact. Once the pilot group demonstrates stable performance over an observation period, the patch can safely be rolled out to the rest of the network.

Step-by-Step Solution

1
Analyze the operational risk of upgrading 50 production access points simultaneously.
Identified that a faulty update pushed globally could result in total wireless network failure across the campus.
Patch management best practices require risk mitigation controls prior to full-scale deployment.
2
Select a deployment method that permits live validation with limited failure impact.
Staged deployment (canary or pilot testing) limits potential downtime to a controlled subset of devices.
Pilot deployments verify real-world performance under monitoring before affecting mission-critical areas.

Key Concept

Staged Patch Deployment and Pilot Testing
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Topics

Patch Management and Software Maintenance

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