Topic 4: Multimedia and Media Types

Question 1

Multimedia is the

Answer 1

integration of multiple forms of media in a website or presentation

Question 2

Multimedia software is software that includes

Answer 2

text, graphics, sound and video

Question 3

Once a multimedia application is created it should be tested for;

Answer 3

correct links, correction navigation structure and correct match to agreed interface design

Question 4

The three factors affecting file size and quality are:

Answer 4

resolution, colour depth and sampling rate

Question 5

Resolution is the number of

Answer 5

pixels in an image or video frame

Question 6

Colour depth is the number of

Answer 6

bits to store colour of pixel in image or video frame

Question 7

Sampling rate is the number of times per second a

Answer 7

sound sample is taken when recording using a microphone.

Question 8

Compression is needed if a

Answer 8

file becomes too large, they may cause stroage issues or take too long to send over a network

Question 9

For text the two standard file formats are:

Answer 9

TXT and RTF

Question 10

The TXT file format stores only information about

Answer 10

characters.

Question 11

TXT is very simple so

Answer 11

it is accepted by virtually all computer systems and does not take up as much space on a hard disk.

Question 12

RTF stands for

Answer 12

Rich Text Format, and stores text but this time it also stores font, size and colour or style.

Question 13

RTF files sizes are

Answer 13

larger and take longer to send over a network.

Question 14

BMP stands for and is

Answer 14

Bitmap image and is an uncompressed file format with data being stored about each pixel in an image

Question 15

JPEG stands for and is

Answer 15

Joint Pictures Expert Group and one pixel needs 3 bytes of storage.

Question 16

What does JPEG do to reduce file size?

Answer 16

JPEG’s are a compressed format (lossy) this reduces file size by cutting out data users won’t notice commonly used for photos on internet

Question 17

GIF needs how much storage?

Answer 17

One pixel needs 1 byte (8 bits).

Question 18

How many colours are available for GIF?

Answer 18

256

Question 19

GIF is compressed format, true or false?

Answer 19

True

Question 20

GIF reduces file size by

Answer 20

more efficient storage methods

Question 21

GIF is best suited for;

Answer 21

cartoons,graphs, etc rather than photos

Question 22

PNG stands for and is

Answer 22

Portable Network Graphic and is an improved version of GIF.

Question 23

PNG storage for one pixel is

Answer 23

6 bytes (48 bits)

Question 24

How many colours are available in PNG

Answer 24

16,777,216

Question 25

PNG is a compressed format, true or false?

Answer 25

True

Question 26

PNG can be used for

Answer 26

cartoons, graphs, etc as well as photos

Question 27

A WAV file is an

Answer 27

uncompressed sound file that take up lots of space.

Question 28

WAV storage is 3 minutes of speech or music is

Answer 28

36mb

Question 29

WAV is usually used to store songs on

Answer 29

a music CD

Question 30

MP3 is a

Answer 30

compressed file format, so the file size is smaller

Question 31

MP3 storage is 3 minutes of speech or music is

Answer 31

3mb

Question 32

MP3 is usually used to store songs on

Answer 32

iPods and mobile phones

Question 33

A video is a collection of

Answer 33

single photographic images

Question 34

The two common video formats are

Answer 34

MPEG or AVI

Question 35

A frame is a

Answer 35

still image that makes up a video clip