Answer: Time-domain reflectometer for copper cabling Optical time domain reflectometer for fiber-optic cabling
Explanation:
Time-domain reflectometer(TDR) is defined as the device that is utilized for locating and identifying any breakage and faults in circuit board, wires,connectors,metal cables or any path of electricity.
It locates the discontinuation in metal wires such as coaxial cables with the help of time domain reflectometry.
Optical Time Domain Reflectometer (OTDR) is the electronic device that searches and locates faults and break in fiber optic cable.
This specifically works for identifying disruption, loss and measurement of cable.
Thus, for identifying the exact location of breakage in copper cable,time domain reflectometer can be used and for fiber optical cable, optical time domain can be used while troubleshooting.
