What term describes the following? a synchronization object that allows only one thread to access a resource at a time.
Difficulty: Hard
About this MCQ
This Hard Operating Systems MCQ checks one syllabus fact.
The question is: “What term describes the following? a synchronization object that allows only one thread to access a resource at a time.”
The accepted answer is B. Mutex. Mutex is the fact required by “What term describes the following? a synchronization object that allows only one thread to access a resource at a time.” (option B). Option A (“Memory fragmentation”) does not match the stem; it is a near-miss used to catch incomplete recall of Mutex. Option C (“Zombie process”) does not match the stem; it is a near-miss used to catch incomplete recall of Mutex. Remaining alternatives (Real-time operating system (RTOS)) fall outside the same rule and should be eliminated once Mutex is identified. Operating Systems questions of this type reward precise definitions rather than approximate associations. Operating Systems recall of this distinction is a regular item in FPSC, PPSC, NTS, and CSS papers.
- A. Memory fragmentation
Why not A: “Memory fragmentation” is not correct. The accepted answer is B. Mutex. Mutex is the fact required by “What term describes the following? a synchronization object that allows only one thread to access a resource at a time.” (option B). Option A (“Memor
- B. Mutex ✓
- C. Zombie process
Why not C: “Zombie process” is not correct. The accepted answer is B. Mutex. Mutex is the fact required by “What term describes the following? a synchronization object that allows only one thread to access a resource at a time.” (option B). Option A (“Memor
- D. Real-time operating system (RTOS)
Why not D: “Real-time operating system (RTOS)” is not correct. The accepted answer is B. Mutex. Mutex is the fact required by “What term describes the following? a synchronization object that allows only one thread to access a resource at a time.” (option B). Option A (“Memor
Correct answer
B. Mutex
Explanation
Mutex is the fact required by “What term describes the following? a synchronization object that allows only one thread to access a resource at a time.” (option B). Option A (“Memory fragmentation”) does not match the stem; it is a near-miss used to catch incomplete recall of Mutex. Option C (“Zombie process”) does not match the stem; it is a near-miss used to catch incomplete recall of Mutex. Remaining alternatives (Real-time operating system (RTOS)) fall outside the same rule and should be eliminated once Mutex is identified. Operating Systems questions of this type reward precise definitions rather than approximate associations. Operating Systems recall of this distinction is a regular item in FPSC, PPSC, NTS, and CSS papers.
Source: Operating Systems Official Reference Guide
Tags: computer science, operating systems, OS concepts, process management
Submitted by: MCQsHub Editorial
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