Multiple choice

In a microprocessor, the service routine for a certain interrupt starts from a fixed location of memory which cannot be externally set, but the interrupt can be delayed or rejected. Such an interrupt is

  1. non-maskable and non-vectored

  2. maskable and non-vectored

  3. non-maskable and vectored

  4. maskable and vectored

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

Vectored interrupts: Vectored interrupts are those interrupts in which program control transferred to a fixed memory location.

Maskable interrupts: Maskable interrupts are those interrupts which can be rejected or delayed by microprocessor if it is performing some critical task.