CompTIA Network+ (N10-008) — Question 425

A network administrator is troubleshooting a client’s device that cannot connect to the network. A physical inspection of the switch shows the RJ45 is connected. The NIC shows no activity lights. The network administrator moves the device to another location and connects to the network without issues. Which of the following tools would be the BEST option for the network administrator to use to further troubleshoot?

Answer options

• A. Tone generator
• B. Multimeter
• C. Optical time-domain reflectometer
• D. Cable tester

Correct answer: D

Explanation

The best tool for diagnosing cable issues is a cable tester, as it can verify if the cable is functioning properly and identify any faults. The other options, while useful for different purposes, do not specifically address the need to test the integrity of the Ethernet cable connection in this scenario.