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Which is single user operating system

  • MS-DOS
  • UNIX
  • XENIX
  • LINUX

Answer: Option A

Similar Questions :

1. Fragmentation of a file system

  • occurs only is file is not used properly
  • can always be prevented
  • happens in all file systems
  • can be removed by compaction

Answer: Option B

2. In real time OS, which is most suitable scheduling scheme

  • round robin
  • FCFS
  • pre-emptive scheduling
  • random scheduling

Answer: Option C

3. Which technique is used by operating systems to execute several programs concurrently by switching back and forth

  • Partitioning
  • Multitasking
  • Windowing
  • Paging

Answer: Option C

4. The part of machine level instruction, which tells the central processor what has to be done, is

  • Operation code
  • Address
  • Locator
  • Flip-Flop

Answer: Option A

5. Which is non pre-emptive

  • Round robin
  • FIFO
  • MQS
  • MQSF

Answer: Option B

Read more from - Operating System Questions Answers - Chapter 1
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