Question

While executing the main program, if two or more interrupts occur, then the sequence of appearance of interrupts is called

(a) multi-interrupt

(b) nested interrupt

(c) interrupt within interrupt

(d) nested interrupt and interrupt within interrupt

The question was asked in quiz.

The question is from Interrupts and Interrupt Service Routines topic in chapter Special Architectural Features and Related Programming of Microprocessor

Answer 1

Correct choice is (d) nested interrupt and interrupt within interrupt

Explanation: If an interrupt occurs while executing a program, and the processor is executing the interrupt, if one more interrupt occurs again, then it is called a nested interrupt.