1……… is the time required to move the disc arm to the required track.


A.      Seek time
B.      Rotational delay
C.      Latency time
D.      Access time

2…………. refers to a situation in which a process is ready to execute but is continuously denied  access to a processor in deference to other processes.


A.      Synchronization
B.      Mutual exclusion
C.      Dead lock
D.      Starvation

3……….. is the ability of multiple process to coordinate their  activities by exchange of information


A.      Synchronization
B.      Mutual exclusion
C.      Dead lock
D.      Starvation

4………….refers to the ability of multiple process to share core, resources  or data in such a way that only  one process that has access to shared object at a time


A.      Synchronization
B.      Mutual exclusion
C.      Dead lock
D.      Starvation

5.The unit of dispatching is usually referred to as a ………….


A.      Thread
B.      Lightweight process
C.      Process
D.      A and B

6.A ……… is a condition in which there is a set of concurrent processes only which is able to access  a given resource or perform a given function at any time.


A.      Mutual exclusion
B.      Busy waiting
C.      Dead lock
D.      Starvation

7.The sum of seek time and rotational delay is called………….

A.      Reach time
B.      Access time
C.      Arrive time
D.      None

8.In computer security ,…………… means that computer system assets can be modified only by authorized users.

A.      Confidentiality
B.      Integrity
C.      Availability
D.      Authenticity

9.which of the following is independent  malicious program that need not any host program

A.      Trojan horse
B.      Trap door
C.      worm
D.      Virus

10.The internet is an example of a ………..

A.      Circuit switched network
B.      Packet switched network
C.      All the above
D.      None


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