TOPIC 14,15,16

Question 1

Some presentations are interactive and allow the user to navigate to particular slides:
a. Describe what is meant by a hyperlink.

Answer 1

A hyperlink is an image, button or piece of text which can be clicked on to open a new slide or file.

Question 2

Hotspots are a type of hyperlink. What is a hotspot?

Answer 2

A hotspot is an image which acts as a hyperlink – (also called a graphical hyperlink)

Question 3

Presentations can be made more interesting by using slide transitions and animations:
a. What is a slide transition?

Answer 3

When a presentation moves from one slide to the next, this is called a transition.

Question 4

What is an animation?

Answer 4

Animation means getting some of the content in a presentation to move.

Question 5

What is a template?

Answer 5

It is a background that has already been designed by the computer

Question 6

Give 1 advantage of using a template.

Answer 6

Using these can save time allowing the user to concentrate fully on the content of the presentation.

Question 7

What is a Narration

Answer 7

Speech can be recorded on each slide in a presentation using a microphone.

Question 8

Give 2 advantages of using presentation software.

Answer 8

1) Presentation software can make the user look more professional.
2) More exciting than a simple word document or hand written presentation

Question 9

2 disadvantages of using presentation software.

Answer 9

1) Takes quite a bit of time to create a complete presentation
2) Some features such as animations and backgrounds can distract the audience

Question 10

When used in the context of computer screens and televisions, what is meant by the term resolution?

Answer 10

Computer screens are also known as monitors or VDUs (Visual Display Units). Screens can come in different sizes – over 200-inches if you’ve got enough cash to splash. Modern computer screens are usually one of two different types:

Question 11

Give 2 advantages of using a graphics tablet instead of a mouse.

Answer 11

1) Can draw easier because its like using a pencile and papper
2) Can be used to capture handwritten signatures

Question 12

Apart from price, give 1 advantage and 1 disadvantage of an 8 megapixel camera compared to a 14 megapixel camera

Answer 12

Advantage
1)However, higher resolution pictures will use more camera or computer memory.
Diadvantage
2)The higher the resolution (the more pixels per inch) the clearer the picture will be.

Question 13

What does MIDI stand for?

Answer 13

Musical Instrument Digital Interface.

Question 14

What is MIDI?

Answer 14

It is a way of connecting musical instruments to a computer

Question 15

Give 2 uses of microphones connected to a computer.

Answer 15

Talk over the internet

Record sound or music

Question 16

Why are touch screens used in public places?

Answer 16

To help people if they get lost or want to go somewhere because they are used as information points in shopping centres or railway and bus stations.

Question 17

What is a plasma screen?

Answer 17

Plasma screens are also flat screens. They tend to be larger than TFT/LCD screens and are used in reception areas or for videoconferencing.

Question 18

What is a screen resolution

Answer 18

Screen resolution is measured in pixels per inch. The more pixels per inch, the sharper and clearer the picture.

Question 19

Presentations and websites can contain multimedia. Apart from text, name 3 other multimedia techniques you might see on a presentation or website.

Answer 19

Image,Music and videos

Question 20

Why are multimedia techniques often used in education?

Answer 20

Multimedia can be useful in education as it caters to different learning styles.

Question 21

What is digital video camera

Answer 21

digital video cameras capture video digitally onto DVD or a hard drive instead of onto video tape and be easily edited.

Question 22

What is a webcam

Answer 22

A webcam is a digital camera connected to a computer.

Question 23

What is a megapixel

Answer 23

When a digital camera takes a picture, the image is stored as millions of dots called pixels.

Question 24

What is an input device

Answer 24

A device that can be used to insert data into a computer e.g mouse

Question 25

What is an output device?

Answer 25

Its used to transfer data out of the computer e.g a monitor

Question 26

What is a storage

Answer 26

A pieace of computer equipment on which information can be stored on

Question 27

What is backing storage

Answer 27

Backing store is where files, images, videos, etc, can be saved. It includes:Memory Cards – commonly used in mobile phones or digital cameras

Question 28

Name one input device that can be used to draw an image.

Answer 28

Graphics Tablets

Question 29

Give the name of the type of graphic that is stored by a digital camera.

Answer 29

Bitmap

Question 30

Explain what is meant by a bitmap graphic.

Answer 30

Images made up from thousands of dots called pixels in a grid.

Question 31

Explain what is meant by a vector graphic.

Answer 31

They are made up of many individual, scalable objects e.g. squares, lines,
circles, curves and fonts

Question 32

Give two advantages of using vector graphics rather than bitmaps.

Answer 32

1) Smaller files and they can download quicker.

2) When enlarged its not blury

Question 33

Give one advantage of a bitmap over a vector image.

Answer 33

is that they’re unsuitable for producing photo quality images.

Question 34

what is Anti-aliasing.

Answer 34

Diagonal lines in a bitmap image can appear jagged. Anti-aliasing is the process of smoothing out those jagged edges.

Question 35

What is meant by the term ‘optimization’ of an image

Answer 35

Optimising an image means reducing the size of an image for use on a website or presentation.

Question 36

Why is optimization important

Answer 36

saves memory and results in faster uploads and downloads

Question 37

Give one advantage and one disadvantage of using a high megapixel camera.

Answer 37

advantage
faster upload and download

disadvatage
reduce quality

Question 38

A website designer would like to use a background for a graphic they would
like to include on each page as a logo. They have a choice of the following backgrounds:
 Transparent
 White
 Colour
a. Which background from the above list would use the least memory.
b. Before the graphic can be used, it needs to be edited using standard
tools. Describe two standard tools for editing graphics and for each describe what changes to the graphic they can be used for.

Answer 38

a) Transparent
b) Zoom allows you to magnify and image on the screen. If you zoom in far enough, you can edit individual pixels.
Selection – you can select all or part of an image for editing.

Question 39

name 2 common image file formats and say what they are

Answer 39

PNG - Use PNG when you need smaller file sizes with no loss in quality.
PNG - Use PNG when you need smaller file sizes with no loss in quality.