Operating System Questions Answers - Chapter 1

• 15. Which operating system use write through catches

  1. UNIX
  2. XENIX
  3. ULTRIX
  4. DOS

  Answer :

  Option D

• 16. Macintosh computer uses

  1. System 7.0
  2. AU/X
  3. Xenix
  4. none of above

  Answer :

  Option B

• 17. Semophores are used to solve the problem of

  1. race condition
  2. process synchronization
  3. mutual exclusion
  4. belady problem

  Answer :

  Option C

• 18. Fragmentation of a file system

  1. occurs only is file is not used properly
  2. can always be prevented
  3. happens in all file systems
  4. can be removed by compaction

  Answer :

  Option B

• 19. Dispatcher function is to

  1. put tasks in I/O wait
  2. schedule tasks in processor
  3. change task priorities
  4. All of above

  Answer :

  Option A

• 20. Poor response times are caused by

  1. Busy processor
  2. High I/O rate
  3. High paging rates
  4. Any of above

  Answer :

  Option D

• 21. A series of statements explaining how the data is to be processed is called

  1. instruction
  2. compiler
  3. program
  4. interpretor

  Answer :

  Option C