Weekend Revision (Chapter 3 - Paper 1)

Question 1

How many bits does ASCII have?

Answer 1

7 Bits and 128 Characters.

Question 2

How many bits does extended ASCII have?

Answer 2

8 bits, 256 bits

Question 3

How many bits does unicode have?

Answer 3

16 Bits, 65536 characters,

Question 4

What are Bitmaps made up of?

Answer 4

Different coloured squares.

Question 5

What do vectors store?

Answer 5

Mathematics required to draw a shape.

Question 6

What is metadata?

Answer 6

Data about data, width, height, author etc.

Question 7

Is sound discreet or continuous?

Answer 7

Analog - continuous value.

Question 8

What is the sample rate?

Answer 8

How often the amplitude of a sound wave is recorded.

Question 9

What will happen to the sound the more often the sample is recorded?

Answer 9

The playback will sound smoother.

Question 10

What is the bit depth?

Answer 10

How many different gradations of amplitude can be represented in a digital waveform.

Question 11

What does compression do?

Answer 11

Reduces the size of the file so it takes up less space.

Question 12

What should be compressed in lossless form?

Answer 12

Text files and executable files.