Which action would verify cable integrity and test for proper length in a cabling deployment?

Which action would verify cable integrity and test for proper length in a cabling deployment?

• A. Using a Cable Certifier
• B. Running a ping test
• C. Checking DNS resolution
• D. Monitoring CPU utilization

Answer: (A)

Testing the physical cabling requires a measure of both integrity and length at the copper level. A cable certifier is built for this by sending test signals through the run and checking a range of parameters that reflect how well the cable is performing. It verifies continuity and proper wire mapping (catching swapped or split pairs), measures impedance and signal loss, and assesses return loss and crosstalk. From the speed and timing of the signals, it can determine the actual length of the run and compare it to the allowed spec, ensuring the installation will meet the chosen category and data-rate requirements. This combination of continuity, pairing, and length measurement is exactly what confirms cable integrity and proper length. Other options don’t address the physical health of the cable. A ping test checks end-to-end reachability at the IP layer, not the cable’s condition or length. DNS resolution tests name lookup, which is a higher-layer function, and monitoring CPU utilization reflects device performance rather than the cabling itself.

Testing the physical cabling requires a measure of both integrity and length at the copper level. A cable certifier is built for this by sending test signals through the run and checking a range of parameters that reflect how well the cable is performing. It verifies continuity and proper wire mapping (catching swapped or split pairs), measures impedance and signal loss, and assesses return loss and crosstalk. From the speed and timing of the signals, it can determine the actual length of the run and compare it to the allowed spec, ensuring the installation will meet the chosen category and data-rate requirements. This combination of continuity, pairing, and length measurement is exactly what confirms cable integrity and proper length.

Other options don’t address the physical health of the cable. A ping test checks end-to-end reachability at the IP layer, not the cable’s condition or length. DNS resolution tests name lookup, which is a higher-layer function, and monitoring CPU utilization reflects device performance rather than the cabling itself.