CompTIA Network+ (N10-008) — Question 669

A network administrator has been assigned to a team that is currently troubleshooting a large-scale outage. The network administrator makes some configuration changes to an on-premises router to see if the link comes up. Which of the following troubleshooting stages is described in this scenario?

Answer options

• A. Establish a theory of probable cause.
• B. Verify full system functionality
• C. Establish a plan of action to resolve the problem.
• D. Test the theory to determine the cause.

Correct answer: D

Explanation

The correct answer is D because the administrator is testing the theory by making changes to the router to see if it resolves the issue. Option A is incorrect as it refers to forming a hypothesis rather than testing one. Option B is not applicable here, as verifying functionality comes after troubleshooting, and option C is about planning rather than executing a test.