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Solved MCQ on Operating System Basis set-9

1) The process is ........

A. an instance of a program in execution

B. a program only

C. a processor state

D. the kernel state


2) The mechanism that brings a page into memory only when it is needed is called .....

A. segmentation

B. fragmentation

C. demand paging

D. page replacement


3) The two paradigms if IPC are ............ and .......

A. call, reply

B. shared memory, message passing

C. send, receive

D. call by value, call by reference


4) A program is passive while a process is ..........

A. inactive

B. spontaneous

C. active

D. impulse


5) FIFO scheduling is ..........

A. preemptive scheduling

B. non preemptive scheduling

C. deadline scheduling

D. fair share scheduling


6) ......... ensures that once transaction completes successively, the results of the operations become permanent.

A. serializability

B. synchronizability

C. atomicity

D. durability


7) A process is created and is initially put in the ........

A. ready queue

B. device queue

C. i/o queue

D. waiting queue


8) Which directory implementation is used in most of the Operating System?

A. single level directory structure

B. two level directory structure

C. tree directory structure

D. acyclic directory structure


9) Isolation property is also know as .........

A. Performance

B. Serializability

C. Durability

D. Atomicity


10) A thread is a ..........

A. task

B. process

C. program

D. light weight process


11) The interval from the fine submission of a process to the time of completion is the ......

A. waiting time

B. blocked time

C. turnaround time

D. response time


12) The term "Operating System" means ..........

A. a set of programs which controls computer working

B. the way a computer operator works

C. conversion of high-level language in to machine level language

D. the way a floppy disk drive operates


13) Generally we have user level threads and ...........

A. Programmer level thread

B. kernel level thread

C. program level thread

D. process level thread


14) To ensure that the ......... condition never occurs in the system, we must guarantee that, whenever a process requests a resource, it does not have any other resource.

A. mutual exclusion

B. no-preemption

C. circular waits

D. hold and wait


15) Resource locking ........

A. allows multiple tasks to simultaneously use resource

B. forces only on task to use any resource at any time

C. can easily cause a dead lock condition

D. in not used for disk drives


16) A program responsible for assigning the CPU to the process that has been selected by the short term scheduler is known as .........

A. scheduler

B. dispatcher

C. debugger

D. compiler


17) The .......... instruct Kernel to do various operations of the calling program and exchange data between the Kernel at the program.

A. shell

B. editors

C. system calls

D. commands


18) Which of the following buffering strategies are used in interprocess communication?

A. null pointer

B. single message buffer

C. multiple message buffer

D. all of the above


19) The process of splitting of data into equal size partitions over multiple disks is known as .....

A. data stripping

B. array of disks

C. RAID

D. SCAN


20) Pipes allow transfer of data between processor in a .......... manner.

A. last in first out

B. shortest job first

C. multilevel queue

D. first in first out

Answers:

1) A. an instance of a program in execution
2) C. demand paging
3) B. shared memory, message passing
4) C. active
5) B. non preemptive scheduling
6) D. durability
7) A. ready queue
8) C. tree directory structure
9) B. Serializability
10) D. light weight process
11) C. turnaround time
12) A. a set of programs which controls computer working
13) B. kernel level thread
14) D. hold and wait
15) B. forces only on task to use any resource at any time
16) B. dispatcher
17) C. system calls
18) D. all of the above
19) A. data stripping
20) D. first in first out


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