How is a time domain reflectometer (TDR) utilized during a tap audit?

A time domain reflectometer (TDR) is a valuable tool used in tap audits primarily for identifying illegal connections within a network. It works by sending a pulse down the cable and measuring the reflections that occur when the pulse encounters changes in impedance, which can indicate the presence of unauthorized connections. These reflections create a unique waveform signature that can be analyzed to detect anomalies in the network layout. When an illegal tap is present, the waveform signature will differ from the expected pattern of a properly terminated cable, allowing technicians to pinpoint unauthorized access points.

The ability to identify these illegal connections is crucial for maintaining the integrity of the network and ensuring that only authorized users have access to the resources. While other options reference different functions related to cable measurements or network performance, the primary application of a TDR in this specific context centers around its capacity to detect unauthorized connections by examining the waveform signature.