Operating System Questions Answers - Set 2

• 22. In which of the following usually a front end processor is used ?

  1. Virtual storage
  2. Timesharing
  3. Multiprogamming
  4. Multithreading

  Answer :

  Option B

• 23. What are global locks ?

  1. they synchronize access to local resources
  2. they synchronize access to global resources
  3. they synchronize access to local and global resources
  4. none of above

  Answer :

  Option B

• 24. What is a page fault ?

  1. is an spelling error in a page in memory
  2. is a reference to a page which is in another program
  3. is an access to a page not currently in memory
  4. always occurs whenever a page is accessed

  Answer :

  Option C

• 25. UNIX is a single user operating system.

  1. True
  2. False

  Answer :

  Option B

  Explanation:

  UNIX is a Multi user operating system.

• 26. Distributed systems should ?

  1. high security
  2. have better resource sharing
  3. better system utilization
  4. low system overhead

  Answer :

  Option B

• 27. Supervisor state is only allowed to ?

  1. Utility Softwares
  2. Application Softwares
  3. Operating System
  4. Guest User

  Answer :

  Option C

• 28. Which scheduling policy is most suitable for time shared operating system ?

  1. Shortest job first
  2. FCFS
  3. LCFS
  4. Round robin

  Answer :

  Option D