Saturday 13 July 2013

UGC NET COMPUTER SCIENCE - OPERATING SYSTEM IMPORTANT SOLVED MCQS

                                   OS SOLVED MCQS

1. An example of a distributed OS is

a.) Amoeba

b.) Unix 

c.) Microsoft DOS

d.) Multics

Ans.: a.)

2. In process management, Round-Robin is essentially the pre-emptive mechanism of

a.) FILO

b.) FIFO

c.) SSF

d.) LTF

Ans.: b.)

3. Which of the following treats hardware as a file system

a.) DOS

b.) UNIX

c.) Windows NT

d.) Linux



Ans.: b.)

4.) Find the pre-emptive scheduling algorithm from the following

a.) Round robin technique

b.) Priority based 

c.) Shortest job first

d.) Shortest job next

Ans.: a.) 

5.) The directory found in most UNIX systems is

a.) waitpid


b.) brk


c.) unmap


d.)usr


Ans.: d.)


6.) The storage replacement strategy program placed in the largest hole in memory is


a.)Best fit


b.) First fit


c.) Worst fit


d.) Conference fit


Ans.: c.)


7. Banker's algorithm is used for


a.) Deadlock recovery


b.) Deadlock avoidance


c.) Deadlock prevention


d.) Deadlock comparison


Ans.: b.)


8.) Peer hole optimization is an example of


a.) Local optimization


b.) Laptop optimization


c.) Data flow analysis


d.) Constant folding


Ans.: d.)


9.) A software used to create job queue is


a.) Linkage editor


b.) Interpreter


c.) Caller


d.) Spooler


Ans.: d.)


10.) Loading an OS from secondary memory to primary memory


a.) Compiling


b.) Booting


c.) Refreshing


d.) Recovering


Ans.: b.)


11.) A page fault 


a.) is an error specific page.


b.) is an acess to the page not currently in memory.


c.) occur when a page program occur in a page memory.


d.) pages used in previous page referencee.


Ans.: b.)


12.) Moving process from main memory to disk is called 


a.) Caching


b.) Swapping


c.) Termination


d.) Interruption


Ans.: b.)


13.) Windows is 


a.) Real time


b.) Multi-user


c.) Multi-structured


d.) Pre-emptive


Ans.: d.)


14.) The page replacement policy that suffers from belady's anamoly is 


a.) LRV


b.) FIFO


c.) LFU


d.) OPTIMAL


Ans.: b.)


15.) Cache memory is 


a.) High speed register


b.)Low speed RAM


c.) Non-Volatile ram


d.)High speed RAM


Ans.: d.)


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7 comments:

  1. Good experience,its very helpful, Thanks

    ReplyDelete
  2. Hi Sathish.
    Thank you very much for your appreciation.

    Keep in touch for more updates.

    ReplyDelete
  3. pls. give notes on time complexity.

    ReplyDelete
  4. Thank you it is really useful senthilnathan karur

    ReplyDelete
  5. Good Experience , It is very helpful. Need more update. Thanks

    ReplyDelete
  6. Hi ur posts are very helpful

    ReplyDelete