Worksheets1.2 Memory and storage
Total questions: 25
Worksheet time: 13mins
What is the highest representation we can make with 8 bits?
255
254
128
127
Which type of memory is described as 'volatile'?
RAM
ROM
Hard Disk Drive
CPU
What type of storage is a DVD ROM?
Optical
Magnetic
Solid State
RAM
Why is a Hard Disk Drive (HDD) not very portable?
It has moving parts
It is too large
It will break if you touch it
It is too small
What is colour depth?
The bits in a pixel
The number of bits used to represent colours
The different colours in each pixel
The bytes that make up the pixels
Image resolution means...
The amount of colours in the image overall
The number of pixels used to represent it
The quality of the image e.g. HD
The speed with which the image is rendered on a PC monitor
Where is virtual memory physically located?
RAM
ROM
Hard drive
Cache
Increasing the number of bits used for each pixel in an image will...
Increase the range of colours that the image can display.
Have no effect on the file size.
Decrease the resolution of the image.
Secondary storage is....
Volatile, short term and only internal
Non-volatile, long term and internal/external
Which of the following types of storage is the most durable?
Optical
Magnetic
Solid state
They are all the same
Which of the following are NOT examples of secondary storage?
CD
ROM
RAM
USB Flash
When a computer is turned off, where is the operating system stored?
BIOS
ROM
Secondary storage
Cache
What should you consider when comparing different storage devices?
Portability, Cost, Length, Speed
Portability, Durability, Cost, Capacity, Speed, Reliability
Cost, Capacity, Speed, Reliability, Type
Portability, Durability, Reliability
In terms of memory, what does volatile mean?
The memory retains its contents when the power is removed
The memory can be overwritten
The memory loses its contents when the power is removed
The sample rate is a measurement of what?
The loudness of a sample
The number of bits used to describe the loudness
The number of samples recorded per second
The bit rate x length of the sound
Higher resolution means a trade off between...
Higher quality images but larger file sizes
Higher quality images but smaller file sizes
Lower quality images but larger file sizes
Lower quality images but smaller file sizes
What is main memory?
An internal component which holds data and programs that are not currently in use
An internal component which holds data and programs that are currently in use
An external component which holds data and programs that are currently in use
What is stored in ROM?
Running programs and data
The bootstrap commands for the computer to startup
All your files
Microsoft Windows
The process of converting an analogue signal to a digital signal is known as...
Compression
Re-coding
Sampling
How do you calculate the number of bits required to store a sound file?
sample rate x sample resolution x number of seconds in recording
sample rate x sample resolution
sample rate x sample resolution
sample rate x number of minutes in recordingsample rate x bitrate x 60
Why does virtual memory hamper processor performance?
The slow transfer rate between hard disk and ROM means the processor has to wait
The slow transfer rate between hard disk and RAM means the processor has to wait
The slow transfer rate between cache memory and RAM means the processor has to wait
Why does a laptop need secondary storage?
To backup files to move to another computer
To store long term data, files and software for future use
To storage programs that are currently running
To store data that the processor needs
Why is cache memory better than RAM?
Cache is cheaper than RAM
It can be accessed more quickly than the rest of RAM
Cache is usually larger than RAM
It can be accessed more quickly than the rest of ROM
What is the effect of a binary shift left by two places?
Multiply by 4
Multiply by 2
Divide by 2
Divide by 4
What is the highest single-digit value in hexadecimal?
G
9
Z
F
