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User programs interact with I/O devices through ?

  • Operating System
  • Hardware
  • Buses
  • Processor

Answer: Option A

Similar Questions :

1. Which operation with floating point numbers are more complicated then arithmetic operation with fixed point number ?

  • Logical operation
  • Arithmetic operation
  • Both of above
  • None of above

Answer: Option B

2. Multiprocessor uses large caches but limited process that shares ___ ?

  • Control Bus
  • Memory Bus
  • Multiple memory bus
  • Single memory bus

Answer: Option D

3. In which condition only one process holds a resource at a given time ?

  • Circular queue
  • Hold and Wait
  • Mutual exclusion
  • Non preemption

Answer: Option C

4. Which determines the address of I/O interface ?

  • Register select
  • Chip select
  • Both of above
  • None of above

Answer: Option C

5. What is meaning of DMAC ?

  • Dual memory access controller
  • Direct memory access controller
  • Direct memory access computer
  • Direct memory accumulator controller

Answer: Option B

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