Jawaharlal Nehru Technological University Anantapur 2010-1st Sem B.Tech Code :R7410506 3 IV ester(R07)Regular s, ember/ember MOBILE COMPUTING - Question Paper

Code :R7410506 3
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 GPRS architecture reference model.
(b) discuss security service in GSM.
2. (a) elaborate the disadvantages of reservation schemes?
(b) discuss polling and Inhibit sense multiple access.
3. (a) Write the steps needed for a handover form 1 foreign agent to a different foreign agent including
layer two and layer3.
(b) How can DHCP be used for mobility and support of mobile IP?
4. (a) How does selective transmission improve the transmission e±ciency? elaborate the modi¯cations
needed in the TCP receiver to implement the selective retransmission protocol.
(b) discuss snooping TCP. elaborate it's advantages and disadvantages?
5. (a) discuss the database transaction models and ACID rules.
(b) discuss 3 - tier client - server architecture.
6. (a) discuss pull based data delivery mechanisms.
(b) discuss the subsequent selective tuning techniques.
i. Broadcast addressing
ii. Directory and Hash based methods.
7. (a) define the properties of MANETs.
(b) discuss destination sequence distance vector routing algorithm in MANETs.
8. (a) discuss networking, security and link management it Bluetooth.
(b) Write about J2ME in brie°y.

Earning:   Approval pending.