UNIVERSITY EXAMINATIONS: 2018/2019
EXAMINATION FOR THE DEGREE OF BACHELOR OF SCIENCE IN
APPLIED COMPUTING
BAC3115 MOBILE COMPUTING
FULL TIME/PART TIME
DATE: DECEMBER, 2018 TIME: 2 HOURS
INSTRUCTIONS: Answer Question One & ANY OTHER TWO questions.
QUESTION ONE
a) Discuss the Wireless networks in comparison to fixed networks 8Marks
b) Explain the effects of multipath propagation of signals 6Marks
c) Elaborate some of the motivations of TDMA (Time Division Multiple Access)
6Marks
d) Discuss the characteristics of wireless LAN 6Marks
e) Describe how CSMA/CA works 4Marks
QUESTION TWO
a) What are the design goals of wireless LAN 8Marks
b) Discuss the Euclidean Unit Disk Graph as used in mobile computing 6Marks
c) What are the requirements for Mobile IP 6Marks
QUESTION THREE
a) Discuss the characteristics of Dynamic Host Configuration Protocol (DHCP)
6Marks
b) Discuss the Advantages and Disadvantages Indirect TCP 6Marks
c) Describe the following terms as used in mobile computing 8Marks
i) Mobile Node (MN)
ii) Home Agent (HA)
iii) Foreign Agent (FA)
iv) Care-of Address (COA)
QUESTION FOUR
a). Using function examples, describe several types of WML Script main libraries
8Marks
b). Discuss some of application scenarios of mobile computing 8Marks
c). Discuss the properties of Inhibit Sense Multiple Access (ISMA) 4Marks
QUESTION FIVE
a) Discuss performance characteristics and disadvantages of GSM 8Marks
b) Discuss Cocktail party as analogy for multiplexing 6Marks
c) Using a diagram describe format and content of a frame 6Marks
