Network connectivity in an extensive forest reserve was achieved using fiber optics. A network fault was
detected, and now the repair team needs to check the integrity of the fiber cable. Which of the following actions
can reduce repair time?


A. Using a tone generator and wire map to determine the fault location
B. Using a multimeter to locate the fault point
C. Using an OTDR in one end of the optic cable to get the fiber length information
D. Using a spectrum analyzer and comparing the current wavelength with a working baseline