Multiple choice

What type of interrupts are used for implementing the highest priority tasks like timers?

  1. Maskable interrupts

  2. Non maskable interrupts

  3. Interprocessor interrupts

  4. Software interrupts

  5. Spurious interrupts

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Non-maskable interrupt (NMI) is a hardware interrupt that lacks an associated bit-mask, so that it can never be ignored. NMIs are used for the highest priority tasks such as timers, especially watchdog timers.