After troubleshooting a computer's connectivity, the network team determines there is a port-mapping issue.

When port issues persist after moving to a different switch port, the next logical troubleshooting step is to test the patch cable. Faulty or damaged cables are a common cause of network connectivity problems. Using a cable tester between the computer and the network closet verifies the integrity of the cable and rules out a physical layer issue.

From CompTIA A+ 220-1101 Official Study Guide, Objective 4.2 – Troubleshoot wired and wireless networks:

“If a device continues to experience connectivity issues after switching ports, test the cabling with a cable tester to check for continuity, shorts, or pinout issues before replacing hardware.”

Verified Source:

CompTIA A+ Core 1 (220-1101) Official Study Guide, Chapter 4: Troubleshooting Network Connectivity

CompTIA Exam Objectives 220-1101, Domain 4.2

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