IST AT4

Question 1

What are the 3 main control structures?

Answer 1

Selection (basic) - one directed path
Selections (complex) - more than one path,2 or more choices
Repetitions(repeats) - loops algorithm specific number of times.includes processes, inputs outpus and decisions

Question 2

How to write an if statement

Answer 2

IF ____ THEN

ENDIF

Question 3

What are the 3 types of repeating processes

Answer 3

REPEAT UNTIL loop (known as POST TEST, or unguarded test)

WHILE loop (known as PRE TEST , or guarded loop)

FOR NEXT loop (counting loop, repeated certain number of times)

Question 4

How do you write a post test or unguarded loop

Answer 4

REPEAT
Process
UNTIL __ = TRUE

Question 5

How do you write a pre text or guarded loop

Answer 5

WHILE ____ = FALSE
Process
ENDWHILE

Question 6

How do you write a counting loop

Answer 6

FOR I = 1 to 5 STEP 1
Display I
NEXT i

Question 7

What is animation

Answer 7

Animation is the result of a series if graphics or frames presented in rapid succession

Question 8

What is tweening?

Answer 8

Tweening is short for in-betweening, and when the program automatically generates the intermediate frames between 2 objects

Question 9

What is path based animaiton

Answer 9

Animation that displays the movement of an animated object in a particular sequence

Question 10

Cell based animation

Answer 10

Animation that involves drawing and displaying each frame or cell

Question 11

What is the difference between morphing and warping

Answer 11

Warping - Transform or distorts a portion of an image
Morphing - Changes shape, size and dimension of an image

Question 12

What is path based animation

Answer 12

Displaying the movement of an animated object onto a fixed background in a particular sequence or path, shape remains the same

Question 13

What is the key frame?

Answer 13

The opening image if a compressed video sequence which contains all the data relating to the image. To compress, frames only contain data or what has changed from the key frame, reducing file size. Also show important moments and change in animation

Question 14

What is selected data

Answer 14

The new changes of the keyframe that contain data of only the new old and old position

Question 15

Two types of audio files in multimedia

Answer 15

Two main types of digital sound - digitalised sound files and musical instrument digital interface (MIDI) filed

Question 16

Why is MIDI so small

Answer 16

MIDI does not store real world sounds. Instead, MIDI files contain digital descriptions of sounds produced by the musical instruments in the software or hardware and are predefined in form

Question 17

What are the 5 elements of multimedia in increasing size?

Answer 17

Video, graphics, animation, audio and text

Question 18

What are the 3 types of multimedia display devices

Answer 18

Liquid crystal displays - place liquid crystal between two polarising sheets. Current applies are various points, changing light transmission of specific crystal at that point

Cathode Ray tubes or visual display units control 3 electron focused beams one for RGB - striking tiny phosphor dots of pixel on monitor and causing them to glow

Plasma displays - use tiny fluroscent Rgb lights that are illuminated to create an image at different intensities

Question 19

2 types of touchscreen

Answer 19

Infra red beams locates finger position and nowadays touch is monitored by electrical currents in screen layers

Question 20

What are URL

Answer 20

Web pages are sent as Uniform resource locators which define the place of a Web pages on a specific server

Question 21

Difference between internet and intranet

Answer 21

Internet is a public network while Intranet is a private network for showing specific

Question 22

What is the difference between the World wide Web and the internet

Answer 22

The world wide Web are the pages that are on the network called the internet

Question 23

Who developed the internet

Answer 23

Tim Berners-Lee

Question 24

How do you comment in HTML, css and java

Answer 24

HTML- <!------>
CSS - /* */
JavaScript- //
Python - #

Question 25

What is a proxy server

Answer 25

Computer used to block access to sites or cache (store) frequently used data.

Question 26

Firewall

Answer 26

Hardware or software used to block access from attackers. They scan pockets of malicious code or attack vectors

Question 27

Virus protection

Answer 27

They detect, quarantine and delete malicious code, preventing damage to your device

Question 28

What is the difference between texts and hypertext

Answer 28

Text is data that consists of strings of printable characters separated by white space and other non-printing characters. Hypertext is simply text that acts as a link to another document or place on document.

Question 29

2 types of hardware on multimedia

Answer 29

Backup display - DVDs and CDs

Display Hardware - Liquid Crystal display, Cathode Ray tube and plasma

Question 30

What is analogue and digital data

Answer 30

Analogue- continuous data
Digital - discrete or fixed quanities

Question 31

Data handling conversion

Answer 31

8 bits = 1 byte
1024 bytes = 1 kilobyte
1024 kilobytes = 1 megabyte
1024 megabytes = 1 gigabyte
1024 gigabytes = 1 terebyte

Question 32

What is IDE

Answer 32

Integrated Development Environement

Question 33

3 types of software

Answer 33

System software (Operating systems)
Application Software (apps)
Utility software (optimised and maintain computer functioning)

Question 34

Software licencing

Answer 34

Retail: off thr shelf
ORM : Original Equipment Manufacturer, same as retail no nice box
Single licence : one device
Open source: free, changes shared
Concurrent source: Multiple licences rotated
Network licence: permission to install
SaaS: allowing people in organisation to access licence
Shareware: free trial software
Freeware: free, copyright still applies

Question 35

3 types of tweening offered in Adobe animate

Answer 35

Classic tweening
Shape tween
Motion tween

Question 36

What is the ISOC

Answer 36

The Internet Society created the transmission control protocol (TCP) wich are rules that allow for order and check transmission of data

Question 37

What is htttp

Answer 37

Standard for hypertext transfer protocol allowed internet users to send and receive Web pages files

Question 38

Image formats

Answer 38

TIFF- lossless image files do not lose quality when compressed big
Bitmap- exclusive to Windows, high quality no compression
Jpeg - Lossy format meaning that the image is compressed to make a smaller file popular on Web
Gif - lossless only limited to 256 colours can be animated small
Png - lossless images same as gif but 16million colours

Question 39

Video and sound formats

Answer 39

Mp4 is lossy format
MPG is lossy format
WMV files are lossless
WAV sound files are lossless
MP3 is lossy

Question 40

Common tags in html

Answer 40

<a> defines hyperlink</a>

<ul> unordered bullet point list
<ol> ordered numbered list
<li> defines list item
<b> Bold text
<body> Defines documents body
<br></br> single line break
<canvas> makes graphics
<div> section of a document
<em> italicised text
<footer> defines footer of a doc
<head> contains information about document between <html> and body
<img></img> inserts image
<link></link> used to link style sheets
<mark> highlights
<nav> navigational links
<p> paragraph
<style>

 style info for document

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