The _________ allows multiple levels of nested calls or interrupts and it can be used to support branching and looping.
A)stack
B)register
C)counter
D)firmware

Question

Quizplus · Accepted Answer

A stack allows multiple levels of nested calls or interrupts and can be used to support branching and looping. It is a data structure used for storing and retrieving data in a last-in, first-out (LIFO) order. When a subroutine is called, the program counter and other variables are pushed onto the stack. When the subroutine returns, the variables are popped off the stack, and control returns to the calling program. This makes it possible to nest subroutines and handle interrupts in a structured and efficient manner. Registers, counters, and firmware do not provide the same level of flexibility and functionality as a stack.

The _________ Allows Multiple Levels of Nested Calls or Interrupts