The average amount of time between hardware failures, calculated as the total amount of operation time for a specified number of units divided by the total number of failures, is known as __________.
A) mean time between failure (MTBF)
B) mean time to diagnose (MTTD)
C) mean time to failure (MTTF)
D) mean time to repair (MTTR)

Question

The average amount of time between hardware failures, calculated as the total amount of operation time for a specified number of units divided by the total number of failures, is known as __________.
A) mean time between failure (MTBF)  
B) mean time to diagnose (MTTD) 
C) mean time to failure (MTTF) 
D) mean time to repair (MTTR)

Quizplus · Accepted Answer

Mean time between failure (MTBF) is the average amount of time between hardware failures, calculated as the total amount of operation time for a specified number of units divided by the total number of failures. Mean time to diagnose (MTTD), mean time to failure (MTTF), and mean time to repair (MTTR) are different metrics related to hardware reliability but are not the same as MTBF.

The Average Amount of Time Between Hardware Failures, Calculated as the Total