Question Detail

In real time OS, which is most suitable scheduling scheme

round robin
FCFS
pre-emptive scheduling
random scheduling

Answer: Option C

Similar Questions :

1. Size of virtual memory depends on

size of data bus
size of address bus
size of main memory
none of above

Answer: Option B

2. Multiprogramming systems

Are easier to develop than single programming systems
Execute each job faster
Execute more jobs in the same time
Are used only on large main frame computers

Answer: Option C

3. Root directory of a disk should be placed

at the fixed address in the main memory
at a fixed location on the disk
at the fixed location on system disk
anywhere on the disk

Answer: Option B

4. Which scheduling policy is best suited for time-sharing operating systems

Shortest job first
Round robin
First come first serve
Elevator

Answer: Option B

5. Dispatcher function is to

put tasks in I/O wait
schedule tasks in processor
change task priorities
All of above

Answer: Option A

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Richa 12 years ago

In which of the following scheduling polices does context switching never take place?
shreyas 12 years ago

why pre-emptive?

mastguru 12 years ago replied

Pre-emptive scheduling takes effect when two jobs compete for the same job slots. If a high-priority job is pending, It can suspend a lower-priority job that is running, and then start the high-priority job instead.
So In real time, we have certain priority based jobs and pre-emptive scheduling can tackle it.

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