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Bbt 2206 : Multimedia Systems Question Paper

Bbt 2206 : Multimedia Systems

Course:Bachelor Of Business Information Technology

Institution: Jomo Kenyatta University Of Agriculture And Technology question papers

Exam Year:2012

JOMO KENYATTA UNIVERSITY OF AGRICULTURE AND TECHNOLOGY
UNIVERSITY EXAMINATIONS 2012/2013
EXAMINATION FOR THE DEGREE OF BACHELOR OF BUSINESS INFORMATION TECHNOLOGY THIRD YEAR FIRST SEMESTER
BBT 2206 : MULTIMEDIA SYSTEMS

DATE: DECEMBER 2012 TIME: 2 HOURS

INSTRUCTIONS : ANSWER ALL QUESTIONS IN SECTION A AND ANY OTHER TWO QUESTIONS FROM SECTION B

========================================================

SECTION A (COMPULSORY)

QUESTION ONE

(a) With your knowledge of multimedia, describe 3 instances when written text may be better than spoken text. [3 marks]
(b) Define animation and describe the different categories of animation. [3 marks]
(c) List 3 animation file extensions and the full names of those extensions [3 marks]
(d) Briefly describe 2 image representation techniques [4 marks]
(e) Why is composite video referred to as the worst form of analog video? [3 marks]
(f) Why hasn’t high bandwidth digital content protection (HDCP) been a widely embraced std in multimedia? [2 marks]
(g) Describe the digitization process (4 marks]
(h) MPEG is a multiple std for -------(complete the sentence) [3 marks]
(i) Differentiate between linear and non-linear activity in multimedia. [3 marks]
(j) Briefly explain the transformation changes that occur in discrete cosine transformation
[3 marks]
(k) Differentiate between YCbCr and RGB, clearly naming what each component stands for in the two. [3 marks]

SECTION B : ANSWER ANY TWO (2) QUESTIONS FROM THIS SECTION

QUESTION TWO
The proper design of user interfaces is an area of study in multimedia and numerous publications and literature exist to this effect.
(a) Why do you think use interface design is so important in the study of multimedia? [2 marks]
(b) Pick one multimedia capturing device for each multimedia element and describe how each device captures the multimedia element and converts it to a form that can be understood by the computer. [3 marks]
(c) Differentiate bllion bilmaps and vecto images [3 marks]

QUESTION THREE

(a) Describe chroma sub-sampling and why is it done? Demonstrate how chroma sub-sampling is done in digital video using a 2:2:2 formation [6 marks]
(b) Compute the file sizes for the following
(i) Aredoluituin of 840 x 480 with a 1 – bit images
(ii-------------”------------ 800x600---------”8 – bit --------”-----------
(iii)------------”------------640x480---------”-----1 – bit -------”------- [9 marks]
(c) Describe 4 criteria used in evaluating authoring tools and name one authoring tool that your know. [5 marks]

QUESTION FOUR

Compression aims to achieve various aims in multimedia. Describe the following compression methods and how you would use each to compress and decompress the string given in brackets.

(a) Huffinana coding (DDDDDDDWWWWWWWWEEEEEEEEEEAAA) [8 marks]
(b) Run length encoding (0000010000001000) [6 marks]
(c) Explain the following terms as related to compression
(i)Spatial compression [3 marks]
(ii)Temporal compression [3 marks]

Bbt 2206 : Multimedia Systems Question Paper

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