Once the theory has been tested and confirmed, the next step is to implement the solution based on the CompTIA troubleshooting model.
CompTIA Troubleshooting Model:
Identify the problem.
Establish a theory of probable cause.
Test the theory.
Establish a plan of action and implement the solution. # (Correct step) Verify full system functionality.
Document findings, actions, and outcomes.
Breakdown of Options:
A). Develop a theory - The theory has already been developed and tested.
B). Establish a plan of action - This happens before implementation, but since the issue is confirmed, it's time to act.
C). Implement the solution - Correct answer. The problem is confirmed, so the fix should be applied.
D). Document the findings - Documentation is the final step, not the next one.
Reference:
CompTIA Network+ (N10-009) Official Study Guide - Domain 5.1: Explain network troubleshooting methodology.