Placement papers on Operating System - Set 3

Placement papers on Operating System - Set 3


1. Super computers typically employ _______.

Real time Operating system
Multiprocessors OS
desktop OS
None of the above
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ANSWER: Multiprocessors OS




2. A page fault occurs

when the page is not in the memory
when the page is in the memory
when the process enters the blocked state
when the process is in the ready state
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ANSWER: when the page is not in the memory




3. What is a shell ?

It is a hardware component
It is a command interpreter
It is a part in compiler
It is a tool in CPU scheduling
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ANSWER: It is a command interpreter




4. In the blocked state

the processes waiting for I/O are found
the process which is running is found
the processes waiting for the processor are found
none of the above
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ANSWER: the processes waiting for I/O are found




5. Virtual memory is __________.

An extremely large main memory
An extremely large secondary memory
An illusion of extremely large main memory
A type of memory used in super computers.
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ANSWER: An illusion of extremely large main memory




6. If the Disk head is located initially at 32, find the number of disk moves required with FCFS if the disk queue of I/O blocks requests are 98,37,14,124,65,67.

310
324
315
321
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ANSWER: 321




7. 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
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ANSWER: Execute more jobs in the same time




8. Which is not the state of the process ?

Blocked
Running
New
Privileged
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ANSWER: Privileged




9. The solution to Critical Section Problem is : Mutual Exclusion, Progress and Bounded Waiting.

The statement is false
The statement is true.
The statement is contradictory.
None of the above
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ANSWER: The statement is true.




10. The problem of thrashing is effected scientifically by ________.

Program structure
Program size
Primary storage size
None of the above
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ANSWER: Program structure


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