Threads of a process share A) global variables but not heap. B) heap but not global variables. C) neither global variables nor heap. D) both heap and global variables.

Official answer: D) both heap and global variables.. Explanation: Threads belonging to the same process share the process's address space and resources, which include: - Code segment (text) - Data segment (global and static variables) - Heap (dynamically allocated memory) - Open files and OS resources Each thread maintains its own private: - Thread ID - Program counter (PC) - Register set - Stack (for local variables and function calls) Therefore, threads share both heap and global variables, making (D) the correct option.

A) global variables but not heap.

B) heap but not global variables.

C) neither global variables nor heap.

Processes, Threads and IPC

GATE CSE 2017 Set 1 · Q18

MCQ1 markEasy

Time00:00

Threads of a process share

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Solution

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Official answer: D) both heap and global variables.

Processes, Threads and IPC

Threads belonging to the same process share the process's address space and resources, which include:

Code segment (text)
Data segment (global and static variables)
Heap (dynamically allocated memory)
Open files and OS resources

Each thread maintains its own private:

Thread ID
Program counter (PC)
Register set
Stack (for local variables and function calls)

Therefore, threads share both heap and global variables, making (D) the correct option.

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This Processes, Threads and IPC previous year question is Q18 of the GATE CSE 2017 Set 1 paper. Find more GATE CSE PYQs on Processes, Threads and IPC in Operating Systems, or browse all GATE CSE PYQs.

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Processes, Threads and IPC in GATE CSE

Processes, Threads and IPC has 15 GATE CSE PYQs across 13 papers from 2011 to 2026. 7 of them are 1-mark MCQs like this one, and it is the only one in GATE CSE 2017 Set 1.

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Independent practice explanation verified by the GateAI team. GATE is conducted by the IITs; question text follows the official paper.