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OCR CS A Level - 1.1.1 Structure and Function of the Processor 2

Authored by Ana Bracher

Computers

12th Grade

Used 2+ times

OCR CS A Level - 1.1.1 Structure and Function of the Processor 2
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15 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the function of the Arithmetic and Logic Unit (ALU) in a processor?

Completing arithmetical and logical operations

Storing data temporarily

Managing the flow of data between the CPU and other devices

Directing operations inside the CPU

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

Program Counter (PC)

Memory Data Register (MDR)

Accumulator (ACC)

Memory Address Register (MAR)

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of the Control Bus in a processor?

Writing data into the addressed location

Requesting access to the CPU

Transmitting memory addresses

Transmitting control signals between internal and external components

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the function of the Address Bus in a processor?

Transmitting control signals between internal and external components

Writing data into the addressed location

Requesting access to the CPU

Transmitting memory addresses

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of pipelining in a processor?

To complete arithmetical and logical operations

To temporarily store data

To manage the flow of data between the CPU and other devices

To reduce the amount of the CPU which is kept idle

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the advantage of Harvard Architecture over Von Neumann Architecture?

Cheaper to develop since the control unit is easier to design

Physically separate memories for instructions and data

Shared memory and data bus used for both data and instructions

Programs can be optimised in size

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of the Fetch Phase in the fetch-decode-execute cycle?

To copy the address from the PC to the MAR

To copy the instruction held at the address to MDR

To increase the contents of the PC by 1

To copy the value held in the MDR to the CIR

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