A user is unable to access the internet, but other users in the same office are not having an issue. All users' devices are hardwired to the network. Which of the following tools should the technician use to determine the issue?
A loopback plug is a diagnostic tool used to test the functionality of network interfaces by creating a signal loop. In this case, since the user's device is hardwired to the network but cannot access the internet, using a loopback plug can help determine whether the issue is with the network interface card (NIC) or the Ethernet cable.
A. Loopback plug: This tool helps test whether the computer's network interface is functioning properly.
Why the other options are incorrect:
B. Network tap: A network tap is used to monitor network traffic, but it wouldn’t help diagnose the local connectivity issue here.
C. Wi-Fi analyzer: This tool is used to troubleshoot Wi-Fi networks, but since the issue is with a hardwired connection, it’s not applicable.
D. Punchdown tool: A punchdown tool is used to connect network cables to a patch panel or keystone jack. It is not used for diagnosing network issues.
This falls under the Hardware and Network Troubleshooting domain in the CompTIA A+ Core 1 exam.
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