Network monitors ” These devices monitor the network at strategic points for performance or degradation of performance.
Protocol analyzers ” Provide real-time traffic and packet analysis. These are sometimes referred to as sniffers .
Cable testers ” Tests physical cable for faults, breaks, or termination problems.
Multimeters ” Takes measurements of voltage, resistance, or current.
Time Domain Reflector ” Uses pulses of current to locate shorts or breaks in metallic cabling. Optical time domain reflectors are used to test fiber- optic cabling.
