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7/23/2019 Mobile Computing MCAE 34
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(Following Paper illand Roll No. to be f illed in your Answer Book )
• Roll No.
M.C.A.
(SEM. V) ODD SEMESTER THEORY EXAMINATION
2010-11
MOBILE COMPUTING
Note: (1) Attempt all questions.
L~~. "
\
.(4) No second answer book will be provided. ,
(a) Discuss the architectural details ofGSM. How is security
implemented ,inGSM?
(b) Discuss diffe'rent channel allocation techniques used in
cellular system .• . . • . . . •
.../ (c) How is the security maintained in GSM with A3, AS and
A8 algorithm? Explain with appropriate diagram.
(d) How do HLR-VLR help in managing the location of mobile? Explain with necessary signaling sequence.
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(e) How does CDMA allow each station to tr~,;smit over thef ..
entire freq uency spectr um all the time? Ex plain with suita ble
example.
(f ) Distinguish between High Speed Cir cuit Switched Data
(HSCSD) and General Packet Rad io Service (GPRS)of GSM stand ard. What architectural additions need to be
mad e in existing GSM to have sup port ofGPR S ?
(a) Distinguish between DCF and PCF in context to wireless
LAN. Explain their coexistence in wireless LAN with
ap propriate diagr ~.-.-
(b) Compar e IEEE 802.11 and Bluetooth with r egar d to their
adhoc capa bilities. Where is the focus of these
technologies?
(c) Sketch a neat diagram showing the Bluetooth protocol stack .
State the functions of the following layers:
(i) Radio Layer
(ii) Baseband Layer
(ill) L2CAP layer .
(d ) Why does the wired TCP need modifications f or its wir eless
implementations? Discuss anyone approach f or mak ing it
adaptive to wireless scenario.
(e) Explain dif ferent components and inter f aces of the WAP
architectur e with suitable d iagram.
(f) How d oes I~ address problem r esolved in wir eless
internet? Ex plain with suitable d iagram.
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(a) Discuss the impact of mobile computing on the following
aspects of d ata management:
~
(iii) Query Processing.
(b) Explain the concept of cluster ing and discuss the distr i buted
cluste~ng scheme/algorithm.
(c) How does mobility affect data re plication when we consider
replicating on mobile platform? Discuss differ ent possi ble
replicating schemes when both client and servet; move only
within their home location servers.
(a) Differentiate between block ing and non-blocking mobile
agent execution. Explain the concept of te plication and
check pointing type f ault-tolerance schemes.
(b) What is mobile agent? What ar e the benef its/good reasons
f or using mobile agents? Discuss the classif ication of faulttolerance schemes f or mobile agents.
(c) Discuss var ious issues related to tr ansaction processing in
mo bile com puting envir onment.
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(a) What is adhoc networks? What are different MAC issues
in adhoc networ ks and how are they addressed ?
(b) (i) Define the following and name a protocol of each
category :
(a) Pro.active protocols
( b) R eactive protocols
(c) Hybrid protocols.
(ii) Explain the destination sequenced distance vector
routing (DSDV) protocol.
(c) Discuss the Ad hoc on Demand Distance vectors (AODV)
routing protocols. How is it differ ent than standard clistance
vector algorithm ?
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