OCR GCSE CS MCQs 1.1 Systems Architecture (J276)

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

• 16GHz

• 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

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

• 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 halved

• 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

Firmware in which software and hardware are integrated on a circuit board is often used in what type of system?

• Desktop System

• Embedded System

• Operating System

• Point of Sales System

Which is an example of an Embedded System:

• Laptops

• Tablets

• PCs

• Washing Machine