Q.-511 .- An interface that provides I/O transfer of data directly to and form the memory unit and peripheral is termed as________
(A) DDA
(B) Serial interface
(C) Direct Memory Access (DMA)
(D) None of the Above
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Answer: (C) Direct Memory Access (DMA)
Q.-512 .- A basic instruction that can be interpreted by computer generally has ________
(A) An operand and an address
(B) decoder and an accumulator
(C) Sequence register and decoder
(D) None of the Above
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Answer: (A) An operand and an address
Q.-513 .- The load instruction is mostly used to designate a transfer from memory to a processor register known as_________
(A) Accumulator
(B) Instruction Register
(C) Program counter
(D) Memory address Register
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Answer: (A) Accumulator
Q.-514 .- The communication between the components in a microcomputer takes place via the address and ______
(A) I/O bus
(B) Data bus
(C) Address bus
(D) None of the Above
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Answer: (B) Data bus
Q.-515 .- The operation executed on data stored in registers is called_______
(A) Macro-operation
(B) Micro-operation
(C) Bit-operation
(D) None of the Above
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Answer: (B) Micro-operation
Q.-516 .- Which register keeps tracks of the instructions in the program stored in memory?
(A) Address Register
(B) Index Register
(C) Program Counter
(D) None of the Above
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Answer: (C) Program Counter
Q.-517 .- In which addressing mode the operand is given explicitly in the instruction?
(A) Absolute
(B) Immediate
(C) Indirect
(D) Direct
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Answer: (B) Immediate
Q.-518 .- When necessary, the results are transferred from the CPU to main memory by _______
(A) I/O devices.
(B) CPU.
(C) Shift registers.
(D) None of the Above.
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Answer: (C) Shift registers.
Q.-519 .- A group of bits that tell the computer to perform a specific operation is known as_______
(A) Instruction code
(B) Micro-operation
(C) Accumulator
(D) Register
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Answer: (A) Instruction code
Q.-520 .- The average time required to reach a storage location in memory and obtain its contents is called_____.
(A) Latency time.
(B) Access time.
(C) Turnaround time.
(D) Response time.
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Answer: (B) Access time.
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