ISRO | ISRO CS 2017 – May | Question 71

Which of the following statement is true?
(A) Hard real time OS has less jitter than soft real time OS
(B) Hard real time OS has more jitter than soft real time OS
(C) Hard real time OS has equal jitter as soft real time OS
(D) None of the above


Answer: (A)

Explanation: Jitter is the variation / displacement between the signals or data being sent. Hard real operating systems deal with more sensitive systems which require strict time deadlines like engine control systems, satellite launching systems etc while soft real operating systems do not require strict timing constraints and a bit delay is permissible, like mobile phones, online database systems. So hard real operating systems require minimised jitter.


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