UGC-NET | UGC-NET CS 2017 Nov – III | Question 45

A signal processor software is expected to operate for 91.25 days after repair, and the mean software repair time is expected to be 5 minutes. Then, the availability of the software is:
(A) 96.9862%
(B) 97.9862%
(C) 98.9962%
(D) 99.9962%

Answer: (D)
Explanation: Availability
= MTBF /(MTBF+MTTR)*100
= 91.25*24*60 / (91.25*24*60+5)*100
= 99.9962%
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