Q. The I/O interface required to connect the I/O device to the bus consists of

  • (A) address decoder and registers
  • (B) control circuits
  • (C) address decoder, registers and control circuits
  • (D) only control circuits
πŸ’¬ Discuss
βœ… Correct Answer: (C) address decoder, registers and control circuits

Explanation: the i/o devices are connected to the cpu via bus and to interact with the bus they have an interface.

Q. To reduce the memory access time we generally make use of

  • (A) heaps
  • (B) higher capacity ram’s
  • (C) sdram’s
  • (D) cache’s
πŸ’¬ Discuss
βœ… Correct Answer: (D) cache’s

Explanation: the time required to access a part of the memory for data retrieval.

Q. is generally used to increase the apparent size of physical memory.

  • (A) secondary memory
  • (B) virtual memory
  • (C) hard-disk
  • (D) disks
πŸ’¬ Discuss
βœ… Correct Answer: (B) virtual memory

Explanation: virtual memory is like an extension to the existing memory.

Q. MFC stands for

  • (A) memory format caches
  • (B) memory function complete
  • (C) memory find command
  • (D) mass format command
πŸ’¬ Discuss
βœ… Correct Answer: (B) memory function complete

Explanation: this is a system command enabled when a memory function is completed by a process.

Q. The time delay between two successive initiations of memory operation

  • (A) memory access time
  • (B) memory search time
  • (C) memory cycle time
  • (D) instruction delay
πŸ’¬ Discuss
βœ… Correct Answer: (C) memory cycle time

Explanation: the time is taken to finish one task and to start another.

Q. The decoded instruction is stored in

  • (A) ir
  • (B) pc
  • (C) registers
  • (D) mdr
πŸ’¬ Discuss
βœ… Correct Answer: (A) ir

Explanation: the instruction after obtained from the pc, is decoded and operands are fetched and stored in the ir.

Q. Which registers can interact with the secondary storage?

  • (A) mar
  • (B) pc
  • (C) ir
  • (D) r0
πŸ’¬ Discuss
βœ… Correct Answer: (A) mar

Explanation: mar can interact with secondary storage in order to fetch data from it.

Q. During the execution of a program which gets initialized first?

  • (A) mdr
  • (B) ir
  • (C) pc
  • (D) mar
πŸ’¬ Discuss
βœ… Correct Answer: (C) pc

Explanation: for the execution of a process first the instruction is placed in the pc.

Q. Which of the register/s of the processor is/are connected to Memory Bus?

  • (A) pc
  • (B) mar
  • (C) ir
  • (D) both pc and mar
πŸ’¬ Discuss
βœ… Correct Answer: (B) mar

Explanation: mar is connected to the memory bus in order to access the memory.

Q. ISP stands for

  • (A) instruction set processor
  • (B) information standard processing
  • (C) interchange standard protocol
  • (D) interrupt service procedure
πŸ’¬ Discuss
βœ… Correct Answer: (A) instruction set processor

Explanation: none.

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