UNIVERSITY EXAMINATIONS: 2011/2012
THIRD YEAR EXAMINATION FOR THE BACHELOR OF
SCIENCE IN INFORMATION TECHNOLOGY
BIT 4305 DISTRIBUTED MULTIMEDIA SYSTEMS
DATE: AUGUST, 2012 TIME: 2 HOURS
INSTRUCTIONS: Answer Question ONE and any other TWO
QUESTION ONE
a) Outline and Explain any FOUR challenges of multimedia systems (4 Marks)
b) Define a distributed system and Explain any FOUR reasons for Distributed
Computing. (4 Marks)
c) Differentiate between Application level QoS and System level QoS (4 Marks)
d) Explain the following scheduling techniques in resource management
i. Fair scheduling
ii. Real time scheduling (6 Marks)
e) Differentiate Dynamic QoS functions and Static QoS functions giving at least
two of such functions (6 Marks)
f) Transparencies are necessary in a distributed computing environment. Explain the
following transparencies:
i. Heterogeneity (2 Marks)
ii. Migration (2 Marks)
iii. Location (2 Marks)
QUESTION TWO
a) Explain the following traffic shaping algorithms giving advantages of each
i. Leakey bucket algorithm
ii. Token bucket (10 Marks)
b) Explain any three parameters involved in QoS Negotiation (6 Marks)
c) Describe the relevance of scaling and filtering in stream adaptation (4 Marks)
QUESTION THREE
a) Explain any four requirements of a multimedia server (8 Marks)
b) Define the term scalability and explain any three factors influencing scalability
(4 Marks)
c) Distinguish between multimedia conferencing and video conferencing (4 Marks)
d) Describe any Two video compression techniques (4 Marks)
QUESTION FOUR
a) Describe the following :
i. Distributed multimedia systems (3 Marks)
ii. Time sampled representation (3 Marks)
iii. Resolution (3 Marks)
b) Differentiate between middleware and media ware giving an example in each case
(3 Marks)
c) Outline and Explain any Four limitations in workstations operating systems
(8 Marks)
QUESTION FIVE
a) Explain the following
i. Continuous media file system (3 Marks)
ii. Masking as used in multimedia systems (3 Marks)
b) i. Define the term TAC? And clearly explain different TAC operation? (7 Marks)
ii. Discuss RAID technology for mass storage for multimedia systems. (7 Marks)
