Consider the following statements:
P – Process aging is enhancing a process priority temporarily to get it scheduled to run.
Q – A context switch takes place on every system call.
R – Using mutual exclusion guaranteed that a system avoids deadlock.
S – Heap size is known to the operating system when a system is launched firstly.
T – If a process suffers from starvation that means it never scheduled to run.
Which of the following statement is correct?
(A) PQST
(B) QRS
(C) PT
(D) PQRST
Answer: (C)
Explanation: P – Process aging is enhancing a process priority temporarily to get it scheduled to run.
Q – A context switch is not necessary for every system call.
R – Mutual exclusion does not guaranteed that a system avoids deadlock.
S – Heap size is unknown to the operating system when a system is launched firstly.
T – If a process suffers from starvation that means it never scheduled to run.
Only P and T are correct.
So, option (C) is correct.
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