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Troubleshooting Wireless and Wired Connections Part 4 Now it's time to explore Wired Connectivity issues and by demonstration, you'll learn how to master troubleshooting both digital and physical issues. We begin with examining several physical tools such as cable tester, wire strippers, and we demonstrate how to use them correctly as well as what issues to look for in handling the correctly in addition to explaining their purpose and what diagnostics they provide. For example, I handling the cable testing you want to assure all the cable being tested in plugged into the correct port, that the cabling itself is responding correctly because the internal wiring is accurately matched up, which also confirms that the cable is functioning properly.