OCR J276 - 1.1 Computer Architecture

Processors have a speed measured in

• Hertz
• Bits
• Bytes
• Seconds

Data and Instructions in use are stored in the

• Processor
• Embedded System
• Hard Disk Drive
• Main Memory

Typical processor speed of 2016

• 16Hz
• 100MHz
• 4GHz
• 300GHz

Which of these doesn’t affect the performance of the computer?

• Clock Speed
• Number Of Cores
• Cache Size
• The Number Of Instructions In The Program

If the number of cores goes up from 2 to 4 – what is the exact effect on performance?

• Performance Decreases
• The maximum number of instructions executed per second doubles
• The maximum number of instructions executed per second quadruples
• The maximum number of instructions executed per second is quartered

If the processing speed goes from 1GHZ to 4GHZ and the processor is changed from an 8 core to a dual core processor – what is the exact effect on the performance of the computer

• The number of instructions executed per second doubles
• The number of instructions executed per second quadruples
• The number of instructions executed per second is halved
• The number of instructions executed per second stays the same

The part of a processor in which instructions are executed is known as?

• Core
• Centre
• Execution
• Instruction Centre

Moore’s Law

• Predicted that the number of transistors on a circuit board would double ever year
• Computers would be capable of thinking and learning for themselves by 2020
• That the number of cores on a processor would double every year
• The performance increase of computers would eventually halt in 2020

Firmware refers to

• Any hardware that can’t easily break
• A combination of hardware and software
• A type of software that is updated to make a computer work better
• Hardware used in kitchens

Question 19 If the processing speed goes up from 1GHZ to 4GHZ and the number of cores goes from 1 to 2 – what is the exact effect on the performance of the computer?

• Doubled
• Quadrupled
• Eight Times Faster
• Sixteen Times Faster