Operating Systems Solved MCQs | Computer Science Operating Systems MCQs

You can find Computer Science Operating System Solved MCQs in this section. All MCQs are solved and verified. Basic Knowledge of Operating system.


The part of machine level instruction, which tells the central processor what has to be done, is

A. Operation code
B. Address
C. Locator
D. Flip-Flop


Which of the following refers to the associative memory?

A. the address of the data is generated by the CPU
B. the address of the data is supplied by the users
C. there is no need for an address i.e. the data is used as an address
D. the data are accessed sequentially


To avoid the race condition, the number of processes that may be simultaneously inside their critical section is

A. 8
B. 1
C. 16
D. 0


A system program that combines the separately compiled modules of a program into a form suitable for execution

A. assembler
B. linking loader
C. cross compiler
D. load and go


Process is

A. program in High level language kept on disk
B. contents of main memory
C. a program in execution
D. a job in secondary memory


The strategy of allowing processes that are logically runnable to be temporarily suspended is called

A. preemptive scheduling
B. non preemptive scheduling
C. shortest job first
D. first come first served


Which of the following systems software does the job of merging the records from two files into one?

A. Security software
B. Utility program
C. Networking software
D. Documentation system


Fork is:

A. the dispatching of a task
B. the creation of a new job
C. the creation of a new process
D. increasing the priority of a task



A. is a natural consequence of virtual memory systems
B. can always be avoided by swapping
C. always occurs on large computers
D. can be caused by poor paging algorithms


Supervisor state is

A. never used
B. entered by programs when they enter the processor
C. required to perform any I/O
D. only allowed to the operating system


Interprocess communication

A. is required for all processes
B. is usually done via disk drives
C. is never necessary
D. allows processes to synchronize activity


Which of the following addressing modes, facilitates access to an operand whose location is defined relative to the beginning of the data structure in which it appears?

A. ascending
B. sorting
C. index
D. indirect


While running DOS on a PC, which command would be used to duplicate the entire diskette



Which of the following rules out the use of GO TO?

A. Flowchart
C. Nassi-Shneiderman diagram
D. All of the above


A system program that sets up an executable program in main memory ready for execution is

A. assembler
B. linker
C. loader
D. compiler


Which of the following are loaded into main memory when the computer is booted?

A. internal command instructions
B. external command instructions
C. utility programs
D. word processing instructions


The FIFO algorithm

A. executes first the job that last entered the queue
B. executes first the job that first entered the queue
C. execute first the job that has been in the queue the longest
D. executes first the job with the least processor needs


What is the name given to the organized collection of software that controls the overall operation of a computer?

A. Working system
B. Peripheral system
C. Operating system
D. Controlling system


The principle of locality of reference justifies the use of

A. reenterable
B. non reusable
C. virtual memory
D. cache memory


The register or main memory location which contains the effective address of the operand is known as

A. pointer
B. indexed register
C. special location
D. scratch pad


Resolution of externally defined symbols is performed by

A. Linker
B. Loader
C. Compiler
D. Assembler


System generation:

A. is always quite simple
B. is always very difficult
C. varies in difficulty between systems
D. requires extensive tools to be understandable


Fragmentation of the file system

A. occurs only if the file system is used improperly
B. can always be prevented
C. can be temporarily removed by compaction
D. is a characteristic of all file systems


Which of the following are(is) Language Processor(s)

A. assembles
B. compilers
C. interpreters
D. All of the above


The memory allocation scheme subject to “external” fragmentation is

A. segmentation
B. swapping
C. pure demand paging
D. multiple contiguous fixed partitions


While working with MS-DOS, which command will you use to transfer a specific file from one disk to another?



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