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User programs interact with I/O devices through ?

  • Operating System
  • Hardware
  • Buses
  • Processor

Answer: Option A

Similar Questions :

1. A keyboard has which type of asynchronous transfer mode ?

  • Serial
  • Parralel
  • Optimal
  • Joint

Answer: Option A

Explanation:

In serial transfer each bit is sent one after the another in a sequence of event and requires just one line.

2. A microprogram is sequencer perform the operation ?

  • Read
  • Write
  • Read and Write
  • Read and Execute

Answer: Option D

3. Which memory is assembled between main memory and CPU ?

  • Primary Memory
  • Secondary Memory
  • Registers
  • Cache Memory

Answer: Option D

4. Which system was used extensively by early mini computers ?

  • Binary number
  • Decimal number
  • Hexadecimal number
  • Octal number

Answer: Option D

Explanation:

Note : Please note that question is asked about early mini computers.

5. UMA stands for ?

  • Unit memory access
  • Uniform memory access
  • Unit memory array
  • Unit metadata access

Answer: Option B

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