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Difficulty: MediumCompTIA Troubleshooting Methodology

An infrastructure engineer is investigating an incident where telemetry data feeds from an edge gateway fail to reach a central monitoring cluster. After analyzing packet captures, the engineer successfully confirms that an MTU mismatch along the GRE tunnel path is causing fragmented packets to be dropped. Which action represents the next step the engineer should take according to the CompTIA troubleshooting methodology?

  1. Formulate a plan of action to rectify the tunnel MTU configuration while considering impact, and apply the required changes.Answer
  2. B
    Conduct end-to-end testing across all affected monitoring dashboards to confirm telemetry restoration.
  3. C
    Record the diagnostic steps, root cause analysis, and preventive measures within the organizational knowledge base.
  4. D
    Interview system operators to gather additional details and duplicate the telemetry drop in a staging environment.

Answer

Formulate a plan of action to rectify the tunnel MTU configuration while considering impact, and apply the required changes.
The scenario describes a technician who has already established a theory and tested it to confirm the cause (Step 3). According to the CompTIA methodology, the immediate next step (Step 4) is to establish a plan of action to resolve the issue while identifying potential side effects, and then implement the solution.

Step-by-Step Solution

1
Identify the current phase of the troubleshooting process.
The scenario states that packet capture analysis confirmed the MTU mismatch as the root cause. This completes Step 3: Test the theory to determine cause.
Recognizing the completed step allows determination of the proper sequence.
2
Determine the next sequential step in the CompTIA 6-step troubleshooting methodology.
Following Step 3 (Test the theory), the next phase is Step 4: Establish a plan of action to resolve the problem and identify potential effects, then implement the solution.
CompTIA standards mandate establishing a structured plan and considering side effects before executing changes.

Key Concept

CompTIA Troubleshooting Methodology Step Order
Estimated Time:1m 30s
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Topics

CompTIA Troubleshooting Methodology

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