UGC-NET | UGC NET CS 2018 July – II | Question 14

A software system crashed 20 times in the year 2017 and for each crash, it took 2 minutes to restart. Approximately, what was the software availability in that year?
(A) 96.9924%
(B) 97.9924%
(C) 98.9924%
(D) 99.9924%

Answer: (D)
Explanation: 365 days have 525600 minutes.
It takes 2 minutes to restart the computer
In 2017 computer crash for 20 times.
i.e. system was available for 525560 minutes
Software availability = 525560 / 525600 = .999924 or 99.9924 %
So, option (D) is correct.

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