Operating systems concept MCQ Test 22

By | October 3, 2017

UGC-NET/GATE Multiple Choice Questions for Operating System.

Question 1
Operating system which doesn't support networking between computers is
A
windows 3.1
B
windows 95
C
windows 2000
D
windows NT
Question 2
I/O of computer system is an abbreviation of
A
input
B
output
C
interaction
D
both A and B
Question 3
Consider a system with a two-level paging scheme in which a regular memory access takes 150 nanoseconds, and servicing a page fault takes 8 milliseconds. An average instruction takes 100 nanoseconds of CPU time, and two memory accesses. The TLB hit ratio is 90%, and the page fault rate is one in every 10,000 instructions. What is the effective average instruction execution time?
A
645 nanoseconds
B
1050 nanoseconds
C
1215 nanoseconds
D
1230 nanoseconds
Question 4
Rate monotonic scheduling assumes that the :
A
processing time of a periodic process is same for each CPU burst
B
processing time of a periodic process is different for each CPU burst
C
periods of all processes is the same
D
none of the mentioned
Question 5
The working set theory of programming behaviour of processes running within an operating system involves
A
the collection of pages that a process accesses
B
disk scheduling mechanisms
C
coalescing holes in memory
D
assigning the CPU to processes
There are 5 questions to complete.

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