Explanation Network troubleshooting is a repeatable process, which means that you can break it down into clear steps that anyone can follow. Identify the Problem. ... Develop a Theory. ... Test the Theory. ... Plan of Action. ... Implement the Solution. ... Verify System Functionality. ... Document the Issue. Theory of probable cause is before Plan of action. https://www.comptia.org/content/guides/a-guide-to-network-troubleshooting