Skip to content
Related Articles

Related Articles

Improve Article
Save Article
Like Article

GATE | Gate IT 2005 | Question 64

  • Last Updated : 28 Jun, 2021

The availability of a complex software is 90%. Its Mean Time Between Failure (MTBF) is 200 days. Because of the critical nature of the usage, the organization deploying the software further enhanced it to obtain an availability of 95%. In the process, the Mean Time To Repair (MTTR) increased by 5 days.
What is the MTBF of the enhanced software

(A) 205 days
(B) 300 days
(C) 500 days
(D) 700 days

Answer: (C)


Availability = MTBF/(MTBF + MTTR)

Option 1 : 0.9 = 200/(200 + a) = 22.22

Case 2 :0.95 = b/(b+22.22+5)=  517.18(near to option C)

Quiz of this Question
Please comment below if you find anything wrong in the above post

My Personal Notes arrow_drop_up
Recommended Articles
Page :

Start Your Coding Journey Now!