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User programs interact with I/O devices through ?

  • Operating System
  • Hardware
  • Buses
  • Processor
Similar Questions :

1. Which exception is also known software interrupt ?

  • Trap
  • Call
  • System Call
  • All of above

2. What is meaning of PCB ?

  • Process control block
  • Preempitive control block
  • Process close block
  • Process carrying block

3. I/O processor has direct access to ?

  • Main Memory
  • Secondary Memory
  • Flash Memory
  • ROM

4. Which among following is an important data transfer technique ?

  • CAD
  • CAM
  • DMA
  • MMA

5. User programs interact with I/O devices through ?

  • Operating System
  • Hardware
  • Buses
  • Processor
Read more from - Computer System Architecture Questions Answers
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