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📝 System Calls

📖 From Operating System • 2. Operating System Structure • 81 questions available

Practice MCQs for System Calls. Test your knowledge with carefully crafted questions across easy, medium, and hard difficulty levels.

🔄 Last updated: 2026-07-04

10
Easy Questions
20
Medium Questions
51
Hard Questions

📝 Sample Questions

Q1. System calls provide an interface to services made available by an operating system. In most modern operating systems, these calls are typically written in which programming languages?

🔹 A. Assembly language only
🔹 B. C and C++
🔹 C. Java only
🔹 D. Python

💡 Difficulty: easy | ✅ Correct: B

Q2. A programmer who uses an API can expect her program to compile and run on any system that supports the same API. This benefit is known as:

🔹 A. Security
🔹 B. Portability
🔹 C. Efficiency
🔹 D. Reliability

💡 Difficulty: medium | ✅ Correct: B

Q3. The run-time support system in most programming languages:

🔹 A. Is part of the operating system kernel
🔹 B. Provides a system-call interface for the programming language
🔹 C. Manages hardware devices directly
🔹 D. Is not required for system calls

💡 Difficulty: hard | ✅ Correct: B

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🔗 Related Topics

📝 Computer System Architecture📝 Computer System Organization📝 Computing Environments📝 Kernel Data Structures📝 Memory Management
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