CompTIA A+ 220-901

Answer: D - Jack should use a cable tester to test any open or short circuits on the network.

Key Takeaway: A cable tester is an electronic device used to verify the electrical connections in a cable or other wired assembly. It is used to verify that all of the intended connections exist and that there are no unintended connections in the cable being tested. A cable stripper is used for stripping insulation from an electric cable. A protocol analyzer is computer software or computer hardware that can intercept and log traffic passing over a digital network or part of a network.