UNIVERSITY EXAMINATIONS: 2012/2013
THIRD YEAR EXAMINATION FOR THE BACHELOR OF
SCIENCE IN INFORMATION TECHNOLOGY
BIT 3204 DISTRIBUTED MULTIMEDIA SYSTEMS
DATE: AUGUST, 2013 TIME: 2 HOURS
INSTRUCTIONS: Answer Question ONE and any other TWO
QUESTION ONE [30 MARKS]
(a) What is meant by the terms Multimedia and Hypermedia? Distinguish between
these two concepts. [4 Marks]
b) Why is file or data compression necessary for Multimedia activities? [2 Marks]
c) (i) Show how you would use Huffman coding to encode the following set of tokens:
AACABBCCCCDCEEFE [5 Mark]
d) What does Nyquist’s Sampling Theorem state? [2 Marks]
e) What is the distinction between lossy and lossless data compression? [4 marks]
f) What are the target media for JPEG compression? [4 marks]
g) i) What is meant by the Quality of Service of a multimedia application? [2 marks]
(ii) What major factors affect the Quality of Service of a multimedia application?
[7 Marks]
QUESTION TWO
a) State the four basic characteristics of a Multimedia system. [4 Marks]
b) What is RAID technology and what advantages does it offer as a medium for
the storage and delivery of large data? [4 Marks]
c) Name any FOUR protocols associated with distributed multimedia systems.
[4 Marks]
d) State the FOUR levels of multimedia objects classification [8 Marks]
QUESTION THREE
a) Describe EIGHT desirable features for a distributed multimedia system
[8 Marks]
b) As a multimedia consultant you have been invited by Judiciary service
commission to give a presentation on enabling video conferencing in
administering justice to remote parts of the country. Give some of the highlights
in your presentation. (Marks will be awarded for capturing issues learnt)
[12 Marks]
QUESTION FOUR
a) List FIVE Components of a Multimedia System. [5Marks]
b) Which are SIX Major Steps in JPEG Coding. [6 Marks]
c) Describe the FOUR processes in the digitization of audio [4 Marks]
d) Design a distributed multimedia architecture for streaming live lectures from
Ruaraka to Kisumu campus for one lecture hall. State any assumptions made
[5 Marks]
QUESTION FIVE
a) Define the following terminologies in multimedia systems. [5 Marks]
i) bit rate
ii) frame
iii) pixed
iv) binary code
v) Time colour
b) Highlight FIVE multimedia applications. [5 Marks]
c) compare and contrast PAL and NTSC television standards. [5 Marks]
d) Calculate the number of DVDs in a 3-hour digital movie if each frame in the
movie is made up of 640 × 480 pixels, each pixel is assigned a 24-bit binary code,
and each second of the movie requires 30 frames, without any compression.
[5 Marks]
