1
GATE CSE 1999
MCQ (More than One Correct Answer)
+2
-0.6
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
2
GATE CSE 1999
MCQ (Single Correct Answer)
+2
-0.6
Which of the following actions is/are typically not performed by the operating system when switching context from process $$A$$ to process $$B$$ ?
A
Saving current register values and restoring saved register values for process
B
Changing address translation tables.
C
Swapping out the memory image of process A to the disk.
D
Invalidating the translation look-aside buffer.
3
GATE CSE 1998
Subjective
+2
-0
Four jobs are waiting to be run. Their expected run times are $$6, 3, 5$$ and $$x$$. $${\rm I}$$n what order should they be run to minimize the average response time?
4
GATE CSE 1996
MCQ (Single Correct Answer)
+2
-0.6
Four jobs to be executed on a single processor system arrive at time $${0^ + }$$ in the order $$A, B, C, D.$$ their burst $$CPU$$ time requirements are $$4, 1, 8, 1$$ time units respectively. The completion time of A under round robin scheduling with time slice of one time units.
A
$$10$$
B
$$4$$
C
$$8$$
D
$$9$$
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