GATE 2011 CS (CS1) – Question 26

Operating System · System Calls, Processes, Threads and IPC · 1 mark · Multiple choice

An OS maintains smaller per-thread structures than per-process structures. Which statement is true?

It maintains only CPU register state per thread.
It does not maintain a separate stack per thread.
It does not maintain virtual-memory state per thread.
It maintains only scheduling/accounting data per thread.

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Show answer and explanation

Correct answer: (C) It does not maintain virtual-memory state per thread.

Explanation

Threads in one process share its virtual address space and associated mapping state. They still need separate stacks, register contexts and scheduling information. Thus virtual-memory state is managed at process scope, making C the intended distinction.

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