Which IRQ does the hard disk controller commonly use?

  1. 0

  2. 1

  3. 4

  4. 13

  5. 14


Correct Option: E
Explanation:

To answer this question, you need to have knowledge about computer hardware and its components, specifically the hard disk controller and IRQ (Interrupt Request) numbers.

IRQ numbers are used by various hardware devices to request attention from the CPU. Each device is assigned a unique IRQ number to ensure proper communication and coordination between the hardware and the CPU.

In the case of the hard disk controller, it commonly uses IRQ 14.

Now let's go through each option and determine if it is the correct answer:

A. 0: This option is incorrect because IRQ 0 is typically used for the system timer.

B. 1: This option is incorrect because IRQ 1 is commonly used for the keyboard controller.

C. 4: This option is incorrect because IRQ 4 is commonly used for the serial port (COM1).

D. 13: This option is incorrect because IRQ 13 is commonly used for the math coprocessor.

E. 14: This option is correct. IRQ 14 is commonly used for the hard disk controller.

Therefore, the correct answer is E.

Find more quizzes: