GATE CS 2023 Set 1 — Question 22

MSQ+1 / -0MediumContext SwitchingProcesses & ThreadsOperating System

Operating System → Processes & Threads → Context Switching

Last updated 5 September 2026

Question

T_1

Correct answer (B) Stack pointer; (C) Program counter; (D) General purpose registers Solution In a multi-threaded process, all threads share the same virtual address space, which means they share the same page table. Therefore, the Page table base register does not need to be saved or restored during a context switch between threads of the same process. However, each thread has its own execution context to allow independent execution. This context includes its own Stack pointer, Program counter, and General purpose registers, all of which must be saved and restored during a context switch. Turn this into a strength. Explore AI-powered practice and doubt support with Success Tracker.

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Correct answer (B) Stack pointer; (C) Program counter; (D) General purpose registers Solution In a multi-threaded process, all threads share the same virtual address space, which means they share the same page table. Therefore, the Page table base register does not need to be saved or restored during a context switch between threads of the same process. However, each thread has its own execution context to allow independent execution. This context includes its own Stack pointer, Program counter, and General purpose registers, all of which must be saved and restored during a context switch.

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