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A new Network technician was given a task to connect a user PC to a network point, which is in working condition. The technician connected the PC with a CAT5 cable. Once connected, the user complained of intermittent disconnections and reconnections of the network. As an initial troubleshooting step, the technician connected another PC in another LAN jack using the same cable and the issue remained the same.
What is the likely cause of the issue? Pick one.
Network card (NIC) of the PC is faulty.
Cable and the electric power cable running close to each other inside of the cable conduit.
Either one or both end of the CAT 5 cable is loosely connected (crimped).
Technician has prepared the cable with an incorrect cable PIN out.
An incorrect pinout on the CAT5 cable (or any CATx cable) will result in no communications being possible. If the issue was an electric power issue, assuming that one is using UTP, then the problem would not have continued to exist using the same cable when it was moved to another PC in a different LAN jack. If the NIC was faulty, then there would have been no connection in the first place. If a cable is poorly crimped, or if the wires in the cable are not inserted deeply enough into the RJ-45 plug before crimping, then the signal would be intermittent, and would result in the symptoms described here.
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