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Cork Institute of Technology
Higher Certificate in Computing in Information Technology
Support – Award
(KITSU_6_Y2- ITS 2)
Spring 2008
Multimedia
(Time: 3 Hours)
Instructions: Answer four questions. All questions carry equal marks.
Examiners: Mr. B. Doyle Mr. John Walsh Mr. James Greenslade
Q. 1
Write the complete HTML code required to produce the table illustrated below. (25 marks)
The image is titled table.gif and is 350 x 200 pixels. The word ‘Purposes’ provides a link to the main CIT website.
Q. 2
(a).
The table below shows the relative frequencies with which 6 characters occur in a particular file. Use Huffman’s algorithm to construct an optimal variable length code for these characters. (12 marks)
(b). Calculate the difference in kilobytes between the file size for the fixed length and variable length codes for these characters. (6 marks)
(c) Explain Run Length encoding giving one practical example of how it can be effectively used for Data Compression. (7 marks)
(b.)
You are asked to create a Client Side Image Map using the image shown: Each Sector should be linked to a corresponding page, e.g. sector1.html etc. The name of the image is sectormap.jpg. (12 marks)
Q. 4
(a) In addition to up to 1000 channels for sprites, Macromedia Director has six special channels. Name these channels and give a brief description of their purpose. (6 marks)
(b) A Macromedia Director movie has a stage size of 640 x 480 pixels. Write the Lingo code which will make a sprite appear from off stage, travelling from the left hand side, across the stage, disappearing on the right hand side, returning to stop at a precise point with coordinates x= y=300. (13 marks)
(c) You have been asked to author an instructional interactive animated presentation for deployment on the web. Indicate whether you would choose to work in Macromedia Flash or Director and mention the factors which would inform your choice. (6 marks)
Q. 5
(a) There are three major picture or frame types found in typical video compression designs. Name these three types and briefly outline the dependencies that exist between them. (12 marks)
(b) A sequence of MPEG frames is transmitted in the following order 12 15 13 14 18 16 17 21 19 20 24 22 23 For each frame in this sequence, identify the type of the frame. (7 marks)
(c) Discuss briefly the technical differences between the NTSC and PAL Broadcast standards. (6 marks)
