Skip to content
Related Articles

Related Articles

ISRO | ISRO CS 2020 | Question 4

Improve Article
Save Article
  • Last Updated : 27 Nov, 2020
Improve Article
Save Article

What is the availability of the software with following reliability figures.

Mean Time Between Failures (MTBF) is 20 days
Mean Time To Repair (MTTR) is 20 hours 

(A) 90%
(B) 96%
(C) 24%
(D) 50%


Answer: (B)

Explanation: Convert into the same unit then apply the formula.
Software availability,

= MTBF / (MTBF + MTTR)
= 20*24 / (20*24 + 20)
= 480 / 500
= 0.96
= 96 %

Option (D) is correct.

Quiz of this Question

My Personal Notes arrow_drop_up
Related Articles

Start Your Coding Journey Now!