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Bit 3204 Distributed Multimedia Systems Question Paper

Bit 3204 Distributed Multimedia Systems

Course:Bachelor Of Science In Information Technology

Institution: Kca University question papers

Exam Year:2014

UNIVERSITY EXAMINATIONS: 2013/2014
ORDINARY EXAMINATION FOR THE BACHELOR OF SCIENCE
IN INFORMATION TECHNOLOGY
BIT 3204 DISTRIBUTED MULTIMEDIA SYSTEMS
DATE: AUGUST, 2014
TIME: 2 HOURS
INSTRUCTIONS: Answer Question ONE and any other TWO
QUESTION ONE [30 MARKS]
a) What is QoS? (1 Mark)
b) What are the differences between analog signals and digital signals? (2 marks)
c) Audio signals are often sampled at different rates. CD quality audio is sampled at
44.1kHz rate while telephone quality audio sampled at 8kHz.
i) What are the maximum frequencies in the input signal that can be fully recovered
for these two sampling rates?
(2 marks)
ii) Briefly describe the theory you use to obtain the results?
(2 marks)
d) GIF and JPEG are two commonly used image representations.
i) What images are suitable to be represented as GIF and JPEG? (2 marks)
ii) Using Lempel Ziv algorithm encode the following text. (4 mark)
ACCABBDDEEDAABBDA
e) You intend to stream video at 300kbps and want to budget for 50 users each watching
for one hour each day of a 30 day month. (4 marks)
f) Why is HDMI emerging as a better multimedia interface? (3 marks)
g) State the multimedia protocols associated with the following
i) TCP
(3 marks)
1
ii) UDP
(3 marks)
i) State the 4C’s that make the multimedia applications interactive.
QUESTION TWO
(4 marks)
[20 MARKS]
a) Distinguish each of the following:
i) EDF Preemptive Scheduling and Rate Monotonic Preemptive Scheduling
(4 mark)
ii) Intra-Synchronization and Inter-Synchronization `
(2 marks)
b) Describe your understanding of H.323 [4 mark]
c) State the any three technological thrusts that have enhanced multimedia technology
and widespread use ?
(6 marks)
d) State the FOUR states of resource management (4 marks)
QUESTION THREE [20 MARKS]
a) State FOUR Characteristics of a Multimedia System.
(4 marks)
b) Identify FIVE Key Issues in designing and developing Multimedia Systems.
(5 marks)
c) List FIVE Components of a Multimedia System. (5 marks)
d) What is a CODEC? (3 mark)
e) Define a multimedia system. (3 mark)
QUESTION FOUR
a) Consider three pre-emptible tasks:
Task A with PA = 200 ms, and CA = 60 ms
Task B with PB = 100 ms, CB = 40ms
Task C with PC = 1000 ms, CC = 10ms
2
i) Are these tasks schedulable at all? (2 marks)
ii) If yes, why, with which scheduling algorithm, (2marks)
iii) what is the schedule of tasks? (2 mark)
iv) If not, why not? (2 mark)
b) What are the THREE key technical issues in designing multimedia applications.
(6 marks)
c) What are the SIX key issues networked multimedia systems must address.
(6 marks)
QUESTION FIVE [20 MARKS]
a) How much space does it take to store an RGB 640x480 pixel picture? (3 marks)
b) What are the two types of real-time multimedia streaming. (2 marks)
c) Describe the following multimedia applications
i) Virtual Reality (VR) (5 marks)
ii) Video conferencing (5 mark)
iii) IPTV (5 mark)
3

Bit 3204 Distributed Multimedia Systems Question Paper

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