Download JNTUH (Jawaharlal nehru technological university) MCA (Master of Computer Applications) 4th Sem (Fourth Semester) Regulation-R19 2022 March-April 864AD Mobile Computing Previous Question Paper
R19
Code No: 864AD
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
MCA IV Semester Examinations, March/April - 2022
MOBILE COMPUTING
Time: 3 Hours
Max.Marks:75
Answer any five questions
All questions carry equal marks
- - -
1.a)
How the handover decision takes place in GSM depending on receiver signal
Strength? Explain.
b)
Explain the applications of Mobile Computing. [10+5]
2.a)
Show with a diagram the steps involved in a mobile terminated call a station calling a
mobile station in GSM.
b)
In detail describe the functions and limitations of operating systems in handheld devices.
[8+7]
3.
Describe the various multiple access techniques in detail with neat diagram. [15]
4.a)
Explain how DHCP used for mobility and also how it supports mobile IP.
b)
How can we avoid hidden and exposed terminal problems? Explain in detail.
[8+7]
5.a)
Explain in detail different cache invalidation mechanisms.
b)
Explain how congestion control, slow start and fast retransmit mechanisms
influence the efficiency of TCP in mobile environment.
[8+7]
6.a)
How a packet is delivered in Indirect TCP? Explain.
b)
List the various advantages and disadvantages of I-TCP.
c)
Explain ACID transaction rules that should be maintained by database transactional models
to achieve data integrity.
[5+5+5]
7.a)
Describe synchronization usage models in mobile applications.
b)
What is selective tuning and indexing? Explain different methods of selective tuning and
indexing.
[7+8]
8.a)
What is Dynamic source routing protocol? Illustrate an example.
b)
Discuss the challenges and issues in implementing MANETs.
[9+6]
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This post was last modified on 17 March 2023