Outline, using the CompTIA troubleshooting model, the actions required at each step$-$in order to resolve the networking issues. Describe at least four key troubleshooting processes that would be taken to identify the cause of the reported problems. Include specifying tools used to perform tasks like checking physical connections, testing device connectivity, isolating problematic areas, reviewing basic settings, and maintaining communication with the client. Customer Service Enhancement $(5$ marks$)$: Summarize how the application of systematic problem solving and decision$-$making techniques enhances customer service. Discuss the importance of effective communication, timely resolution, and proactive measures in ensuring customer satisfaction.