GATE - 1999 | OS | System calls are usually invoked by using

GATE - 1999 | OS | System calls are usually invoked by using
Posted on 27-02-2022

GATE - 1999 [Operating System]

Questions:

System calls are usually invoked by using

A

a software interrupt

B

polling

C

an indirect jump

D

a privileged instruction

  

Solution:

Option (A) is Correct.

Software interrupts are implementing device drivers (or) transitions between protected mode of operations, such as system calls.

 

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