UNIVERSITY EXAMINATIONS: 2017/2018
EXAMINATION FOR THE DEGREE OF BACHELOR OF SCIENCE IN
INFORMATION TECHNOLOGY/ BACHELOR OF BUSINESS IN
INFORMATION TECHNOLOGY
BIT 3204A/BBIT 302: DISTRIBUTED MULTIMEDIA
FULL TIME/PART TIME/DISTANCE LEARNING
DATE: AUGUST, 2018 TIME: 2 HOURS
INSTRUCTIONS: Answer Question One & ANY OTHER TWO questions.
QUESTION ONE [30 MARKS]
(a) What is Distributed multimedia operating system? [1 Mark]
(b) What features of MIDI make it suitable for use in the MPEG-4 audio compression?
[4 Marks]
(c) What are the differences between analog signals and digital signals? [2 Marks]
(d)Audio signals are often sampled at different rates. CD quality audio is sampled
at 44.1kHz rate while telephone quality audio sampled at 8kHz. What are the
maximum frequencies in the input signal that can be fully recovered for these two
sampling rates? Briefly describe the theory you use to obtain the results? [4 Marks]
(e) Explain your understanding of quality of service in distributed multimedia systems
[6 Marks]
(f) What are the factors to be considered in designing multimedia interfaces? [13 Marks]
QUESTION TWO [20 MARKS]
State the differences for each of the following:
a) JPEG and JPEG 2000 [4 Marks]
b) GIF and BMP [4 Marks]
c) Hypertext and Hypermedia. [2 Marks]
d). Temporal Synchronization and Spatial Synchronization [2 Marks]
e) EDF Preemptive Scheduling and Rate Monotonic Preemptive Scheduling [4 Marks]
f) Intra-Synchronization and Inter-Synchronization [4 Marks]
.QUESTION THREE [20 MARKS]
a) What is a CODEC? [3 Marks]
b) Define a multimedia system [3 Marks]
c) State FOUR Characteristics of a Multimedia System [4 Marks]
d) Identify FIVE Key Issues for Multimedia Systems [5 Marks]
e) List FIVE Components of a Multimedia System [5 Marks]
QUESTION FOUR [20 MARKS]
a) How much memory is required for a 5160 by 4290 display resolution with colour depth
24 bits? [5 Marks]
b) State four factors that are essential in audio digital recording [5 Marks]
c) What is the size of uncompressed sound with CD quality for 1 minute of audio:
[4 Marks]
d) Using LZ coding encode the following text
ABBAMMMNABCBAABBM [6 Marks]
QUESTION FIVE [20 MARKS]
a) List essential standards and protocols in Video conferencing [5 Marks]
b) Describe Virtual Reality (VR) [5 Marks]
c) State FIVE advantages and FIVE disadvantages of DATA COMPRESSION:
[10 Marks]
