Jawaharlal Nehru Technological University Anantapur 2010-1st Sem B.Tech Code :R7410506 2 IV ester(R07)Regular s, ember/ember MOBILE COMPUTING - Question Paper
Thursday, 30 May 2013 01:00Web
Code :R7410506 2
IV B.Tech I Semester(R07)Regular Examinations, November/December 2010
MOBILE COMPUTING
(Computer Science & Engineering, info Technology and Electronic & Computer Engineering )
Time: three hours Max Marks: 80
ans any 5 ques.
All ques. carry equal marks
1. (a) discuss the architecture of mobile computing.
(b) Where and when can collisions occur while accessing the GSM system? Compare possible collisions
caused by data transmission in standard GSM, HSCSD and GPRS.
2. (a) De¯ne the issue of Hidden and Exposed terminals. What happens in the case of such terminals
if Aloha, Slotted Aloha, reservation Aloha or MACA is used?
(b) discuss TDMA and its features.
3. (a) What is the main purpose of registration of a mobile node? discuss in detail.
(b) Write short notes on IPv6.
4. (a) define transaction oriented TCP.
(b) discuss Mobile TCP. How does a supervisory host send TCP packets to the mobile node and to a
¯xed TCP connection.
5. (a) discuss the concept of cache invalidation mechanisms.
(b) discuss the subsequent concepts in mobile environments
i. Data cache maintenance
ii. Web cache maintenance.
6. (a) discuss the Hash based, Index based selective tuning and indexing techniques.
(b) Write about communication asymmetry with the help of a diagram.
7. (a) How does dynamic source routing handle routing? What is the motivation behind dynamic source
routing compared to other routing algorithms for ¯xed networks.
(b) define security issues in MANETs.
8. (a) elaborate advantages and issues of forwarding mechanism in Bluetooth networks regarding se-
curity , power saving and network stability?
(b) discuss about the wireless application Environment (WAE) logical model.
Earning: Approval pending. |