JNTU Kakinada B-Tech 4-1 MOBILE COMPUTING R13 March 2018 Question Paper

IV B.Tech I Semester Supplementary Examinations, February/March – 2018
MOBILE COMPUTING (Common to Computer Science and Engineering and Information Technology)Time: 3 hours Max. Marks: 70
Question paper consists of Part-A and Part-B
Answer ALL sub questions from Part-A
Answer any THREE questions from Part-B
*****

PART ?A (22 Marks)1. a) Differentiate guided and unguided media transmission. [3]
b) List the specifications of physical medium dependent and its sub layers in
IEEE802.11.
[4]
c) Write about 32-bit subnet masking. [4]
d) What do you mean by context-aware computing? [4]
e) Write various steps in online bucket scheduling algorithm for broadcasting [4]
f) Describe Functions of Android operating system for mobile devices. [3]

PART ?B (3×16 = 48 Marks)2. a) In detail describe the functions and limitations of operating systems in
handheld devices.
[8]
b) When a mobile station moves from one cell to another how to handle handover
mechanism? Explain different kinds of it.
[8]

3. a) Explain the following medium access control mechanisms. (i) For far and near terminals (ii) For hidden and Exposed terminals.
[8]
b) Describe receiver transmitter structures of Direct Sequence and Frequency
hopping Spread Spectrum in detail
[8]

4. a) Explain the requirements for the evolution of new mobile IP protocol from
existing IP protocol along with the working of mobile IP protocol.
[8]
b) What is the role of Reverse tunneling in route optimization? Explain. [8]

5. a) How to perform data delivery and congestion control in conventional TCP/IP
transport layer protocol? Explain.
[8]
b) In detail explain the procedural differences between stateless synchronous &
asynchronous and stateful synchronous &asynchronous mechanisms of cache
invalidation.
[8]

6. a) What is selective tuning and indexing? Explain different mechanisms of it. [8]
b) In detail explain what is synchronization engine? How this tool is used for data
synchronization in mobile devices?
[8]

7. Explain the following protocols used by MANET for routing
a) Dynamic Source Routing b) Ad-hoc On-demand distance vector routing
c) Cluster head gateway switch routing d) Table driven fat routing

[16]
Code No: RT41053
Set No. 1
R13
1 of 1