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. Operating system is

A collection of hardware components
A collection of input output devices
A collection of software routines
All of above

Answer: Option C

2. Dynamic allocation of storage areas with VSAM files is accomplished by

hashing
control splits
over flow areas
relative recording

Answer: Option B

3. Which operating system use write through catches

UNIX
XENIX
ULTRIX
DOS

Answer: Option D

4. Which among following scheduling algorithms give minimum average waiting time

FCFS
SJF
Round robin
On priority

Answer: Option B

5. Fragmentation of a file system

occurs only is file is not used properly
can always be prevented
happens in all file systems
can be removed by compaction

Answer: Option B

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Richa 11 years ago

In which of the following scheduling polices does context switching never take place?
shreyas 11 years ago

why pre-emptive?

mastguru 11 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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