Operating System Questions Answers - Chapter 1

• 43. Scissoring enables

  1. a part of data to be displayed
  2. entire data to be displayed
  3. full data display on fulll area of sceen
  4. no data display

  Answer :

  Option A

• 44. A public key encryption system

  1. Allows only the correct sender to decode the data
  2. Allows only the correct receiver to decode the data
  3. Allows anyone to decode the data
  4. none of above

  Answer :

  Option B

• 45. Daisy chain is a device for

  1. connecting a number of controllers to a device
  2. connecting a number of device to a controller
  3. all of above
  4. none of above

  Answer :

  Option B

• 46. Four necessary conditions for deadlock are non pre-emption, circular wait, hold and wait and

  1. mutual exclusion
  2. race condition
  3. buffer overflow
  4. None of above

  Answer :

  Option A

• 47. A high paging rate

  1. may cause a high I/O rate
  2. keeps the system running well
  3. is a symptom of too much processor activity
  4. always creates a slow system

  Answer :

  Option A