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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