Which troubleshooting step checks OSI layers after problem identification?
Which of the following steps of the troubleshooting methodology would most likely include checking through each level of the OSI model after the problem has been identified?
Community Votes
76% of anonymous learners picked answer A. Votes are pick records left by other test-takers — they are not the verified answer.
Community Insight
The exam tests your knowledge of the CompTIA troubleshooting step order; the trap is confusing the later 'verify functionality' step with the diagnostic layer-by-layer analysis performed when forming a theory.
Learn which troubleshooting methodology step most likely involves checking OSI model layers after problem identification. Community consensus favors 'Establish a theory' for the CompTIA N10-008 exam, with key reasoning about the standard troubleshooting order.
Choosing D, 'Verify functionality,' because verifying full system functionality can use the OSI model, but that step occurs after implementing a solution, not right after problem identification.
Community Discussion (11 comments)
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Expert Analysis
Why the Answer Is Correct
A is correct because the second step of the CompTIA troubleshooting methodology is to establish a theory of probable cause. After identifying the problem, technicians often walk through the OSI model layer by layer to form a hypothesis. Commenter [2] correctly explains that this step is all about forming a hypothesis to pinpoint root cause.Why the Other Options Are Wrong
B (Implement) and C (Plan of action) come later in the process, after the cause is determined. D (Verify functionality) is step 6, where you confirm the solution worked — it may involve checking layers, but not for diagnosis. Commenter [3] notes that while verifying also goes through OSI, it isn't the step directly after problem identification, making A the better answer.Community Comment Notes
Votes are split 76 for A and 24 for D. Most commenters who chose A emphasize the sequence: identify problem → establish theory → test theory → plan → implement → verify. Commenter [1] notes that the OSI model detail is extraneous; just knowing step 2 is 'establish a theory' is enough. A few, like commenter [5], argue for D, but they overlook the 'after problem identified' phrasing.Official Reference
Exam Strategy
Memorize the seven-step CompTIA troubleshooting methodology in order. On exam day, look for time markers like 'after the problem has been identified' — they point to the very next step, not a later one.