1 OCR GCSE Computer Science - System Architecture

Which of the following is not a characteristic of a CPU?

• Central

• Number of cores

• Cache

• Clock Speed

Which component could improve the performance of a computer?

• ALU

• External USB Storage

• Printer

• RAM

Which of the following best defines clock speed?

• Used to count the number of instructions.

• The number of instructions stored in memory.

• The number of cycles performed in a second.

• Used to perform mathematical calculations.

3 GHz means approximately how many instructions per second?

• 1 billion instructions

• 2 billion instructions

• 3 billion instructions

• 4 billion instructions

Which of the following is not a physical component inside the CPU?

• Arithmetic Logic Unit

• Control Unit

• Cache

• Clock Speed

Increasing the clock speed could mean?

• The software can respond faster.

• The hardware will consume less power.

• The system will become more secure.

• The graphics will improve significantly.

Increasing the clock speed could mean?

• Allows more instructions to run per second.

• Decreases the performance of the CPU.

• Increases the power consumption of the CPU.

• Reduces the heat generated by the CPU.

A multi-core processor is?

• A single processor with multiple threads.

• Two or more processors inside a CPU.

• A type of memory storage.

• A graphics processing unit (GPU).

More cores mean?

• Separate cores can work on 2 or more tasks at the same time

• More cores increase the speed of a single task

• More cores reduce power consumption

• More cores improve graphics performance

What is an embedded system?

• A computer system that is built into another device

• A standalone computer used for gaming

• A type of software application

• A network of computers connected to the internet