📝 Character devices in The Linux System

📖 From Operating System • 18. The Linux System • 8 questions available

Practice MCQs for Character devices in The Linux System. Test your knowledge with carefully crafted questions across easy, medium, and hard difficulty levels.

🔄 Last updated: 2026-07-27

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📝 Sample Questions

Q1. What defines a character device in Linux?

🔹 A. It stores data in blocks

🔹 B. It provides a stream of bytes

🔹 C. It caches data in the page cache

🔹 D. It represents a network socket

💡 Difficulty: easy | ✅ Correct: B

Q2. How does a vm_area_struct relate to mapping a character device?

🔹 A. A character device can be mapped, creating a vm_area_struct

🔹 B. Character devices cannot be mapped

🔹 C. vm_area_struct only applies to block devices

🔹 D. Mapping a character device bypasses vm_area_struct

💡 Difficulty: medium | ✅ Correct: A

Q3. A developer needs a character device that streams sensor data to multiple concurrent readers without losing data. Which synchronization plus I/O model is most appropriate?

🔹 A. Spinlock with select

🔹 B. Mutex with poll

🔹 C. Semaphore with epoll

🔹 D. RCU with async I/O

💡 Difficulty: hard | ✅ Correct: C

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🔗 Related Topics

📝 Linux History 📝 The Linux kernel 📝 The Linux system 📝 Linux distributions 📝 Linux licensing

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