Thursday, July 30, 2015

Operating System Questions

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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