COA ANSWERS

Q1 _________ is the sequence of operations performed by CPU in processing an instruction.

a. Execute cycle

b. Fetch cycle

c. Decode

d. Instruction cycle

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Q2. __________ converts the programs written in assembly language into machine instructions.

a. Machine compiler

b. Interpreter

c. Assembler

d. Converter

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Q3. The instructions like MOV or ADD are called as ___________.

a) OP-Code

b) Operators

c) Commands

d) None of the mentioned

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Q4 Which memory unit has lowest access time?

a) cache

b) registers

c) magnetic disk

d) main memory

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Q5. The instruction fetch operation is initiated by loading the contents of program counter into the______ and sends_____ request to memory.

a. Memory register and read

b. Memory register and write

c. Data register and read

d. Address register and read

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Q6. Which register holds the address of next instruction to be executed?

a. Instruction register

b. Program counter register

c. Control register

d. None of these

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Q7. Advantages of Dynamic RAM over Static RAM are

a. Lower power consumption

b. Higher capacity

c. Lower cost per bit

d. All of the above

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Q8. What are the significant designing issues/factors taken into consideration for RISC Processors?

a. Simplicity in Instruction Set

b. Pipeline Instruction Optimization

c. Register Usage Optimization

d. All of the above

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Q9. Which of the following is an advantage of pipelining?

a. Instruction throughput increases.

b. Faster ALU can be designed when pipelining is used.

c. Pipelining increases the overall performance of the CPU.

d. All of the above

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Q10. The transfer between CPU and Cache is _______.

a) Block transfer

b) Word transfer

c) Set transfer

d) Associative transfer

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Q11. What is the formula for Hit Ratio?

a. Hit/(Hit + Miss)

b. Miss/(Hit + Miss)

c. (Hit + Miss)/Miss

d. (Hit + Miss)/Hit

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Q12 Which of the following is correct example for Auxiliary Memory?

a. Magnetic disks

b. Tapes

c. Flash memory.

d. Both A and B

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Q13. The average time required to reach the location in memory and obtain its content is called __________.

a. Latency time

b. Access time

c. Response time

d. Turnaround time

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Q14. The two phases of executing an instruction are _________.

a) Instruction decoding and storage

b) Instruction fetch and instruction execution

c) Instruction execution and storage

d) Instruction fetch and Instruction processing

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Q15. The instruction read from memory is then placed in the_______ and contents of program counter is______ so that it contains the address of_______ instruction in the program.

a. Program counter, incremented and next

b. Instruction register, incremented and previous

c. Instruction register, incremented and next

d. Address register, decremented and next

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