CompTIA Network+ Troubleshooting Model

Identify the problem. Includes gathering information, duplicating the problem, question users, identify symptoms, determine if anything has changed, approach multiple problems individually

Establish a theory of probable cause. Includes question the obvious, consider multiple approaches, top to bottom/bottom to top, OSI model, divide and conquer

Test the theory to determine the cause, once theory is confirmed determine next steps to resolve problems. If theory is not confirmed re-establish new theory or escalate

Establish a plan of action to resolve the problem and identify potential effects

Implement the solution or escalate as necessary

Verify full system functionality and if applicable implement preventive measures.

DOCUMENT FINDINGS, ACTIONS AND OUTCOMES!!!!!!