U 3

Question 1

What is I/O Management?

Answer 1

I/O (Input/Output) management in Linux handles communication between the system and external devices like disks, keyboards, and networks.

Question 2

Linux I/O Architecture

Answer 2

User Space ↔ System Calls ↔ Kernel Space ↔ Device Drivers ↔ Hardware

Kernel uses buffering, caching, and scheduling for efficient I/O.

Question 3

Buffered I/O

Answer 3

Data is stored temporarily in a buffer to reduce system calls.

Improves performance by grouping I/O operations.

Question 4

I/O Scheduler

Answer 4

Linux uses I/O schedulers to manage read/write requests.

Examples: CFQ, Deadline, NOOP.