Solution :
Loopback plug --- confirm interface functionalityIt is a connector that is used to diagnose the transmission problems.
Protocol Analyzer --- Analyze network trafficIt is used to capture and analyze the signals as well as data traffic.
Throughput tester - Measure link speedTime Domain Reflectometer (TDR) - Determining the location of cable faultIt is used in determining the characteristics of the electrical lines by observing the reflected waveforms
Locating a specific cable - Toner probe