Multiple choice

An individual module has an reliability of 0.999 and 25 such modules and are connected in parallel. What is the reliability of the whole software?

  1. 0.94

  2. 0.96

  3. 0.97

  4. 0.98

  5. 0.95

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Reliability of a software system connected in parallel=(Reliability of one module)^Nwhere, N=total number of module connected in parallel. Reliability of software=(0.999)^25 =0.97529 =0.98 (rounding off).