What should a technician check to ensure cabling is suitable for 10 GbE Ethernet after complaints about network performance?

To ensure cabling is suitable for 10 GbE Ethernet, measuring the Power Sum Crosstalk is crucial because this parameter directly affects high-frequency signals transmitted over the cable. With 10 GbE Ethernet running at higher frequencies, crosstalk—interference from adjacent pairs of wires—can severely impact performance.

Power Sum Crosstalk measures the total crosstalk interference affecting the desired signal, allowing the technician to assess if the cable can maintain signal integrity at the required speeds. If the levels are too high, data transmission errors can occur, leading to performance issues.

While checking the length of the cable, confirming the cable type, and inspecting for physical damage are important aspects of maintaining network performance, they do not specifically address the critical issue of signal integrity that affects high-speed transmissions like 10 GbE. Thus, measuring Power Sum Crosstalk is the most relevant check to ensure that the cabling supports the required performance standards for this high-speed technology.