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A technician needs to verify that a newly installed RJ45 was correctly terminated. Which of the following should the technician use?
Correct Answer: C
A loopback plug allows a technician to verify that the cable functions as expected by looping the signal back for testing. While a punchdown tool installs cables in a panel, it does not test functionality, and Wi-Fi analyzers and toner probes serve other network diagnostics. This is in line with CompTIA A+ Core 1 objectives for validating cable installation and connectivity.