Computer Organization and Architecture Objective Questions set-5

1. Memory unit that communicates directly with the CPU is called the ...............

A) Main memory

RISC (Photo credit: Wikipedia)

B) Secondary memory

C) Auxiliary memory

D) Register



2. CISC stands for ................

A) Common Instruction Set Computers

B) Complex Instruction Set Compilers

C) Complex Instruction Set Computers

D) Compound Instruction Set Computers



3. The communication between central system and the outside environment is done by

A) Input-output subsystem

B) Control system

C) Memory system

D) Logic system



4. The register that keeps track of the instructions in the program stored in memory is ..

A) Control register

B) Program counter

C) Status register

D) Direct register



5. ................ is a small very speed register file maintained by the instruction fetch segment of the pipeline.

A) Branch Target Buffer

B) Loop buffer

C) Branch loop buffer

D) Target register



6. In case of only one memory operand, when a second operand is needed, as in the case of an Add instruction, we use processor register called .........

A) accumulator

B) register

C) operand

D) source



7. Data transfer between the main memory and the CPU register takes place through two registers namely .......

A) general purpose register and MDR

B) accumulator and program counter

C) MAR and MDR

D) MAR and Accumulator



8. The pipeline operates on a stream of instruction by overlapping the phases of instruction cycle is ........

A) Arithmetic pipeline

B) Instruction pipeline

C) Parallel pipeline

D) Multiple pipeline



9. The instruction that cause transfer of data from one location to another without changing the binary information content are ...

A) Data transfer instruction

B) Data manipulation instruction

C) Register transfer instruction

D) Program control instruction



10. The branch logic that provides decision making capabilities in the control unit is known as ..

A) Controlled transfer

B) Conditional transfer

C) Unconditional transfer

D) None of above

Answers:

1. Memory unit that communicates directly with the CPU is called the ...............

A) Main memory

2. CISC stands for ................

C) Complex Instruction Set Computers

3. The communication between central system and the outside environment is done by

A) Input-output subsystem

4. The register that keeps track of the instructions in the program stored in memory is ..

B) Program counter

5. ................ is a small very speed register file maintained by the instruction fetch segment of the pipeline.

B) Loop buffer

6. In case of only one memory operand, when a second operand is needed, as in the case of an Add instruction, we use processor register called .........

A) accumulator

7. Data transfer between the main memory and the CPU register takes place through two registers namely .......

C) MAR and MDR

8. The pipeline operates on a stream of instruction by overlapping the phases of instruction cycle is ........

B) Instruction pipeline

9. The instruction that cause transfer of data from one location to another without changing the binary information content are ...

A) Data transfer instruction

10. The branch logic that provides decision making capabilities in the control unit is known as ..

C) Unconditional transfer

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