Multiple choice networking

By default, COM2 uses what IRQ?

  1. 1

  2. 2

  3. 3

  4. 4

  5. 5
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

COM2 traditionally uses IRQ3 on PC-compatible systems. This is the standard hardware assignment where COM2 and COM4 share IRQ3, while COM1 and COM3 share IRQ4. These defaults can cause conflicts if multiple devices try to use the same IRQ simultaneously, requiring reconfiguration.

Keep practicing — related questions