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When did IBM released the first version of its disk operating system DOS version 1.0 ?

  • 1981
  • 1982
  • 1983
  • 1984

Answer: Option A

Similar Questions :

1. Which of the following memory allocation scheme is subject to external fragmentation ?

  • Segmentation
  • Swapping
  • Demand Paging
  • Multiple Contiguous Fixed Partitions

Answer: Option A

2. Disk scheduling involves deciding ?

  • which disk should be accessed next
  • the order in which disk access request should be made
  • physical location of files
  • type of disks a system should have

Answer: Option B

3. Banker's algorithm for resource allocation deals with ?

  • deadlock prevention
  • deadlock aviodance
  • deadlock recovery
  • circular wait

Answer: Option B

4. What is the maximum number of processes that may enter simultaneously inside the critical section to avoid race condition ?

  • One
  • Two
  • Three
  • Four

Answer: Option A

5. Supervisor state is only allowed to ?

  • Utility Softwares
  • Application Softwares
  • Operating System
  • Guest User

Answer: Option C

Read more from - Operating System Questions Answers - Set 2
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