Which statements about reliability measurement are TRUE? (Multiple Choice)

Which statements about reliability measurement are TRUE? (Multiple Choice)
A . Generally, system reliability is determined by mean time between failure (MTBF) and mean time to repair (MTTR).
B . MTBF refers to the average time (usually expressed in hours) from the fault occurrence time to the fault recovery time. A larger MTBF indicates a higher reliability.
C . MTTR refers to the average time from the fault occurrence time to the fault recovery time.
D . The formula for calculating the MTTR is as follows:
MTTR= Fault detection time + Hardware replacement time + System initialization time + Link recovery time + Route convergence time + Forwarding recovery time A smaller MTTR indicates a higher reliability.

View Answer

Answer: ACD