CompTIA Network+ · N10-009
Objective 5.1: Explain the network troubleshooting methodology
Practice questions for Network+ objective 5.1, “Explain the network troubleshooting methodology.” Every question is original, written to the N10-009 exam objectives, and comes with a full explanation — answer them below to see instant grading.
This objective sits in Domain 5.0: Network Troubleshooting, which is about 18% of the exam — so mastering it moves your readiness score meaningfully.
1.After identifying a problem and establishing a theory of probable cause, a technician tests the theory and confirms it is correct. What is the NEXT step in the CompTIA troubleshooting methodology?
2.A technician suspects a routing issue is causing connectivity problems. The technician pings the default gateway successfully, then pings the remote subnet, then checks routing tables. This methodical layered approach best represents which methodology?
3.A technician establishes a theory that a patch cable is faulty. The technician replaces the cable but the problem persists. What should the technician do according to CompTIA's methodology?
4.After implementing a solution, a technician confirms that the originally reported issue is fixed. However, the technician should also check that the fix did not cause what?
5.A junior technician has been working on a network issue for 45 minutes without resolution. The problem is causing a significant business impact. According to best practices, what should the technician do?
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