Which of the following is necessary for maintaining network performance?

Active monitoring and testing of cabling is essential for maintaining network performance because it allows technicians to detect and address issues before they lead to significant downtime or performance degradation. Regular checks can identify faults, interference, or degradation in cable quality, which can directly impact data transmission speeds and reliability.

By actively monitoring the cabling, teams can ensure that the infrastructure is performing at optimal levels and make necessary adjustments or repairs in a timely manner. Testing the cabling also helps to confirm that installations meet the specified standards, thus supporting consistent performance.

While regular network audits, using fiber cables, and implementing redundant systems contribute to overall network reliability and efficiency, they do not substitute for the proactive approach of monitoring and testing. Ensuring that cabling is functioning optimally through active measures is crucial in a dynamic network environment.