Multimedia Essentials (IT4005PAR) – Class Test 1 Answers Multimedia Essentials Class Test 1 Answers Answers Section A (3 marks each) 01. C 02. C 03. A 04. D 05. D 06. C 07. A 08. B 09. B 10. D 11. A 12. A 13. B 14. A 15. D 16. B 17. C 18. A 19. B 20. D
Multimedia Essentials (IT4005PAR) – Class Test 1 Answers Section B (4 marks each) 21. A) Rule of Thirds – A set of lines divides the image into thirds both horizontally and vertically. Important elements intersect the lines. (2 marks) B) Headroom – The space above the subject is called headroom. It has to be minimized as much as possible. (1 marks) C) Extreme Long Shot – Shows the environment. Used for landscape pictures. (1 marks) 22. JPEG Image has compresion Appropriate for pictures with smooth transition of colours 3 Cannot be used for animations (2 marks each for any 2 difference) 1 2 GIF Compression is different from jpeg Appropriate for pictures with sharp transition of colours Can be used for animations
23. A) Brightness – Changes the overall brightness of a picture. Lighten a picture that is too dark or darken a picture that is too light. (1 marks) B) Color Balance – Used to change color cast. The color cast can be determined by looking at people’s faces or at objects that are gray or white. (2 marks) C) Color Saturation - Increasing the saturation adds punch to the colors but can distort the true colors. Decreasing the saturation brings the colors closer to shades of gray, black, and white. (Decreasing color saturation all the way leaves you with a black-and-white picture.) Many dull-looking pictures can benefit from increased saturation. (1 marks) 24. A bitmap is a simple information matrix describing the individual dots that are the smallest elements of resolution on a computer screen or other display or printing device. (2 marks) Two ways of creating bitmaps: A. Make a bitmap from scratch with a paint or drawing program. B. Capture a bitmap from a photo, artwork, or a television image using a scanner or video capture device that digitizes the image. (2 marks) 25. Raster 1 Stores information about each pixel of graphics 2 Usually large file size 3 Usually used in photos (2 marks each for any 2 difference) Vector Only stores information about the nodes or anchor points Usually small file size Usually used for lines, typeart and Illustrations
26. Typefaces - A typeface is a family of graphic characters that usually includes many type sizes and styles. (2 marks) Sans Serif – Do not have any decorative tip. Used in computer display. (1 mark) Serif – Has decorative tip. Used in printed media. (1 mark) 27. Hypermedia - Multimedia—the combination of text, graphic, and audio elements into a single collection or presentation— becomes interactive multimedia when you give the user some control over what information is viewed and when it is viewed. Interactive multimedia becomes hypermedia when its designer provides a structure of linked elements through which a user can navigate and interact. (2 marks) HyperText - When a hypermedia project includes large amounts of text or symbolic content, this content can be indexed and its elements then linked together to afford rapid electronic retrieval of the associated information. When words are keyed or indexed to other words, you have a hypertext system; the “text” part of this term represents the project’s content and meaning, rather than the graphical presentation of the text. Hypertext is what the World Wide Web is all about. (2 marks)
Multimedia Essentials (IT4005PAR) – Class Test 1 Answers 28. Organising Structure – Linear, Hiarchial, Non Linear and Composite
Linear: Users navigate sequentially, from one frame or bite of information to another. Hierarchical: Also called "linear with branching," since users navigate along the branches of a tree structure that is shaped by the natural logic of the content. Nonlinear: Users navigate freely through the content of the project, unbound by predetermined routes. Composite: Users may navigate freely (nonlinearly), but are occasionally constrained to linear presentations of movies or critical information and/or to data that is most logically organized in a hierarchy. (1 mark for each explanation or illustration) 29. A) SmartMedia Cards - SmartMedia cards are smaller than CompactFlash cards and generally do not come with storage capacities quite as high. (1 mark) B) Sony Memory Stick - Sony memory sticks, shaped something like a stick of gum, are currently used mainly in Sony products. (1 mark) C) xdPicture Cards - The xD-Picture Card™ is the smallest of the memory cards and used in very small cameras. It was developed jointly by Fuji and Olympus as a replacement for the SmartMedia card. (2 marks) 30. Flash Card 1 Uses solid – state chips 2 Usually used in cameras 3 Example – PC Cards, Compact Flash (2 marks for each difference) (2 marks for examples) Magnetic Disk Uses magnetic disks Usually used in computers Example – Floppy disk, Hard disk