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πŸ“ Overview of I/O Systems

πŸ“– From Operating System β€’ 13. I/O Systems β€’ 10 questions available

Practice MCQs for Overview of I/O Systems. Test your knowledge with carefully crafted questions across easy, medium, and hard difficulty levels.

πŸ”„ Last updated: 2026-07-27

2
Easy Questions
5
Medium Questions
3
Hard Questions

πŸ“ Sample Questions

Q1. A new USB mouse is attached to a computer. Which method allows the operating system to control it with minimal changes to existing code?

πŸ”Ή A. Write a custom kernel patch for each mouse model
πŸ”Ή B. Load a generic USB HID driver that abstracts mouse functions
πŸ”Ή C. Access hardware ports directly from a user program
πŸ”Ή D. Use BIOS interrupts to communicate with the mouse

πŸ’‘ Difficulty: easy | βœ… Correct: B

Q2. A tape robot uses proprietary commands not found in existing drivers. Which design principle should the OS employ to integrate this device while keeping the kernel manageable?

πŸ”Ή A. Replace the entire I/O subsystem with a new one
πŸ”Ή B. Create a separate user‑space daemon for the robot
πŸ”Ή C. Encapsulate the robot’s specifics in a dedicated driver module
πŸ”Ή D. Standardize the robot’s commands to match existing drivers

πŸ’‘ Difficulty: medium | βœ… Correct: C

Q3. When deciding whether to implement I/O handling for a new sensor in kernel space or user space, which factor most strongly influences the decision?

πŸ”Ή A. Performance requirements of the sensor
πŸ”Ή B. Ease of debugging the driver code
πŸ”Ή C. Portability across different operating systems
πŸ”Ή D. Security considerations of user processes

πŸ’‘ Difficulty: hard | βœ… Correct: A

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πŸ”— Related Topics

πŸ“ I/O Hardware in I/O SystemsπŸ“ Polling in I/O HardwareπŸ“ Interrupts in I/O HardwareπŸ“ Direct memory access in I/O HardwareπŸ“ I/O hardware summary
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