1) The register which holds the address of the location to or from which data are to be transferred is known as_______

1. Instruction Register
2. Control register
3. Memory Address Register
4. None of the Above

2) An interrupt can be temporarily ignored by the counter is called _______

1. Maskable Interrupt
2. Non-maskable Interrupt
3. vectored Interrupt
4. None of the Above

Answer – Maskable Interrupt

3) The computer performs all mathematical and logical operations inside its _______

1. Visual Display Unit
2. Memory Unit
3. Output Unit
4. Central Processing Unit

Answer – Central Processing Unit

4) Which of the following Unit can be used to measure the speed of a computer?

1. BAUD
2. SYPS
3. MIPS
4. None of the Above

Answer – MIPS

5) The circuit used to store one bit of data is known as_____

1. Encoder
2. OR
3. Flip Flop
4. None of the Above

Answer – Flip Flop

6) The control unit controls other units by generating control and _______

1. Command Signals
2. Timing signals
3. Transfer signals
4. None of the Above

Answer – Timing signals

7) Which of the following bus structure is usually used to connect I/O devices?

1. Single bus
2. Multiple bus
3. Star bus
4. None of the Above

Answer – Single bus

8) An interface that provides I/O transfer of data directly to and form the memory unit and peripheral is termed as________

1. DDA
2. Serial interface
3. Direct Memory Access (DMA)
4. None of the Above

Answer – Direct Memory Access (DMA)

9) A basic instruction that can be interpreted by computer generally has ________

1. An operand and an address
2. decoder and an accumulator
3. Sequence register and decoder
4. None of the Above

Answer – An operand and an address

10) The load instruction is mostly used to designate a transfer from memory to a processor register known as_________

1. Accumulator
2. Instruction Register
3. Program counter
4. Memory address Register

Answer – Accumulator

11) The communication between the components in a microcomputer takes place via the address and ______

1. I/O bus
2. Data bus
3. Address bus
4. None of the Above

Answer – Data bus

12) The operation executed on data stored in registers is called_______

1. Macro-operation
2. Micro-operation
3. Bit-operation
4. None of the Above

Answer – Micro-operation

13) Which register keeps tracks of the instructions in the program stored in memory?

1. Address Register
2. Index Register
3. Program Counter
4. None of the Above

Answer – Program Counter

14) In which addressing mode the operand is given explicitly in the instruction?

1. Absolute
2. Immediate
3. Indirect
4. Direct

Answer – Immediate

15) When necessary, the results are transferred from the CPU to main memory by _______

1. I/O devices.
2. CPU.
3. Shift registers.
4. None of the Above.

Answer – Shift registers.

16) A group of bits that tell the computer to perform a specific operation is known as_______

1. Instruction code
2. Micro-operation
3. Accumulator
4. Register

Answer – Instruction code

17) The average time required to reach a storage location in memory and obtain its contents is called_____.

1. Latency time.
2. Access time.
3. Turnaround time.
4. Response time.

Answer – Access time.

18) The addressing mode which makes use of in-direction pointers is ______

1. Offset addressing mode
2. Relative addressing mode
3. Indirect addressing mode
4. None of the Above

Answer – Indirect addressing mode

19) Which addressing mode is most suitable to change the normal sequence of execution of instructions?

1. Immediate
2. Indirect
3. Relative
4. None of the Above

Answer – Relative

20) Which of the following is used as an intermediate to extend the processor BUS?

1. Gateway
2. Router
3. Connector
4. Bridge

Answer -Bridge