S4 Computer Systems Revision

In Extended ASCII, how many bits are used to store each character?

• 7
• 1
• 2
• 16
• 8

How are vector graphics stored?

• As binary codes representing every pixel in the image
• As objects and attributes
• As shapes and characteristics
• Using metadata

What are the correct column headings for the binary number system?

• 3,6,12,24,48,96,192,384

• 5,10,20,40,80,160,320,640

• 1,2,4,8,16,32,64,128

• 2,4,8,16,32,64,128,256

What are the main attributes used to create an object as part of a vector graphic

• co-ordinates + fill colour + line colour

• RGB combinations + HEX code

• fill colour + line colour + colour name

What are floating point numbers made of?

• A number and a full stop

• A mantissa

• An exponent

• A mantissa and an exponent

What process involves deliberately scrambling up data before it is sent across a network?

• keylogging

• firewall

• encryption

Which of these is not a method of reducing energy consumption resulting from using computers?

• Changing the monitor settings
• Making sure you shut the computer down any time you are not using it
• Using the automatic power-down settings in the computer
• Making sure the computer is put in standby mode or hibernate when not in use

How is a bit-map graphic stored?

• In a grid of object and attributes

• In a grid of pixels

• In a grid of pixels where the colour is also stored as text

• In a grid of pixels where each pixel is stored as a binary number to represent the colour of the pixel

How is a vector graphic stored?

• Each pixel is stored as a binary number

• As a collection of objects

• As a collection of objects with the attributes of each object stored

• Each pixel is stored as a binary number in a grid of pixels.

Convert 65 to binary

• 01100001
• 00100001
• 01000001
• 00100101