GATE - 1999 | OS | A multi-user, multi-processing operating system cannot be
Posted on 27-02-2022
GATE - 1999 [Operating System]
Questions:
A multi-user, multi-processing operating system cannot be implemented on hardware that does not support
|
A |
Address translation |
|
B |
DMA for disk transfer |
|
C |
At least two modes of CPU execution (privileged and non-privileged) |
|
D |
Demand paging |
|
E |
Both A and C |
Solution:
Option (E) is Correct.
Address translation and atleast two modes of CPU execution (Privileged and non-privileged) are needed to implement multiuser and multiprocessing operating system, because address translation provides memory protection which ensures that a given process does not interfere with another, and we need privileged and non-privileged instruction, so that user and OS interconnects properly.
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