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WorksheetsY8 CPU Starter
Total questions: 15
Worksheet time: 8mins
What is the purpose of the CPU
To store instructions
To fetch decode and execute instructions
To fetch decode and execute data
To run the computer
A CPU has a clock speed of 4GHz what does this mean?
It can process 4 billion instructions per second.
It can store 4 billion instructions
It can process 4 billion programs per second
It can process 4 million instructions per second
What is the correct cycle the CPU performs
FETCH EXECUTE DECODE
FETCH DECODE EXECUTE
EXECUTE FETCH DECODE
EXECUTE DECODE FETCH
Describe what is meant by a quad-core processor.
A CPU with two cores that allows instructions to be processed at the same time through multitasking.
The cache size is 4 times as large
Instructions are fetched from RAM faster
A CPU with four cores that allows instructions to be processed at the same time through multitasking.
Which best describes cache memory?
Clock speed is a measure of how many instructions a CPU can carry out per second.
A dual core processor can carry out approximately twice the number of instructions per second than a single core processor.
Data can be accessed much faster because it does not need to be fetched from RAM.
A dual core processor can carry out approximately twice the number of instructions per second than a single core processor.
If you upgrade a CPU by having more cores how does this increase performance?
More instructions can be processed at the same time because it allows multitasking.
The CPU clock speed will be increased
It will allow more programs to be opened at the same time
You can store more data
If you increase the cache memory for a CPU what does this mean?
You can store more frequently accessed data making it more efficient
The fetch decode execute cycle is faster
You can open more programs
You can process more than 1 instruction at the same time - multitasking
If a CPU clock speed is increased how does this increase the performance
The speed of the fetch decode execute cycle is increased . Instructions are processed faster per second
You can process more than 1 instruction at the same time - multitasking
You can open more programs at once
You can store more frequently accessed data
Which 3 devices are most likely to increase the performance
CPU / RAM / Solid state drive
CPU / RAM / Magnetic hard drive
Network card / RAM / Solid state drive
CPU / Solid state drive / Magnetic hard drive
Secondary storage is needed
"When there is not enough primary storage "
As RAM is non-volatile and cannot hold data permanently
For storing data permanently until deleted by the user
To run the BIOS and start up the computer.
The CPU in your computer system fetches instructions from
"ROM"
Hard disk drive
"Virtual memory"
RAM
Which would you increase for a CPU to store more frequently used instructions?
"Clock speed"
Number of cores
"Cache size"
RAM storage
