Ace Test Series: Operating System - Process

Question

Which of the following information is not a part of process control block?

a) CPU scheduling information

b) CPU-stack pointer values

c) CPU-timer information

d) CPU- accumulator interrupt

Comments

CPU Scheduling Information

Process priority and other scheduling information which is required to schedule the process.

So this is not correct.

Answer is either c) or d)

Please provide explanation for whichever is the correct one.

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(y).....

Answer 1

CPU scheduling information: Includes pointers to scheduling queues, process priority, and relevant scheduling parameters

CPU stack pointer values: Part of process state data that define the status of a process when it is suspended - includes contents of CPU resisters, stack and frame pointers, status word etc. These information helps OS to restart the suspended process later.

CPU timer information: Part of accounting information including the amount of CPU and real time used, time quantum limits etc.

CPU accumulator interrupt: These include separate pins on the processor for handling interrupts. These are not part of the PCB.

So answer is (D) CPU accumulator interrput.

Comments

I agree with your answer and thanks for the detailed explanation.

Actually the test series has given option C) as the correct answer. So I just want to be sure.