A user reports that their desktop is unable to reach any networked systems or the internet. You observe no signs of activity where the Ethernet cable connects to the computer. To best address this user's issue, what is the FIRST action you should take?
Reverse the Ethernet cable, as it was likely installed backwards and the T568A side is plugged into the T568B port.
Procure a new computer's Ethernet interface as a direct replacement.
Inspect the physical Ethernet cable and its connections for any visible damage or to confirm that it is securely connected to the appropriate port on both the computer and the network switch.
Move the device closer to the wireless access point.
When there are no signs of activity at the Ethernet port, the simplest troubleshooting step is to check the physical connections. Inactive port LEDs generally indicate a physical problem, such as a disconnected or faulty cable or an improperly seated connector-something you can quickly inspect and reseat. If the connection is secure and the LED remains dark, you can then proceed to deeper tests or escalate hardware replacement, but those later steps will not resolve a loose or damaged cable.
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What is T568A and T568B, and how do they differ?
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How do I know if my Ethernet cable is damaged?
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What are the signs of a faulty Ethernet connection?