07A80401 Mobile Computing B.Tech Question Paper : scce.ac.in

Name of the College : SREE CHAITANYA COLLEGE OF ENGINEERING
University : JNTUH
Department : Computer Science And Engineering
Subject Code/Name : 07A70510/MOBILE COMPUTING
Year/Sem : IV/I
Website : scce.ac.in
Document Type : Model Question Paper

Download Model/Sample Question Paper : https://www.pdfquestion.in/uploads/scce.ac.in/4948-07A70510-MOBILECOMPUTING.pdf

Mobile Computing Question Paper :

Code No: 07A70510 R07 Set No. 2
IV B.Tech I Semester Examinations,December 2011

Related : Sree Chaitanya College Of Engineering 07A80501 Management Science B.Tech Question Paper : www.pdfquestion.in/4961.html

Common to Information Technology, Electronics And Computer Engineering, Computer Science And Engineering
Time: 3 hours
Max Marks: 80
Answer any FIVE Questions :
All Questions carry equal marks :
1. (a) What is the purpose of agent advertisement messages?
(b) What is agent solicitation? [8+8]
2. What are the different types of data dissemination techniques? Briefly explain each of them. [16]

3. With the help of a diagram, explain system architecture of GSM. [16]
4. Discuss in detail the data management issues involved in mobile environment. [16]
5. Name the main differences between multi-hop ad-hoc networks and other networks. What advantages do these ad-hoc networks oer. [16]

6. What are the classical solutions that make TCP work in mobile environment? Why they are not complete solutions. [16]
7. With a neat diagram explain the architecture of J2ME stack. [16]

8. (a) RTS/CTS introduces overhead in case of MACA. Comment.
(b) What is the necessity of ACKs in case of MACA?
(c) After an unsuccessful RTS/CTS transmission attempt, how many times a station retransmits RTS/CTS transmission. Comment. [6+5+5]

Code No: 07A70510
R07 Set No. 4
1. What are the Data base issues involved in mobile environments? Discuss them in detail. [16]
2. (a) What is MANET? How is it dierent from cellular system?
(b) What are the essential features of MANET?
(c) What are the applications of MANET? [6+5+5]

3. Explain in detail about Mobile IP. [16]
4. (a) Why Access point maintains buers in Indirect TCP?
(b) How Indirect TCP hides the problems of wireless links from xed host?
(c) The foreign agent can act as a gateway to translate between the different protocols in Indirect TCP. Comment. [5+5+6]

5. (a) Why CSMA/CD cannot be used in mobile networks?
(b) In CSMA/CA why stations backo after a collision. What is the the value of back interval after one collision, after two collisions etc? Is it constant value or varies with number of collisions.

(c) What is starvation? Is starvation possible in CSMA/CA. comment? [4+8+4]
6. What are the applications for which xed networks are suitable? Explain any two of them. What are the applications of wireless and mobile networks? Explain any two of them. [16]

7. Discuss in detail the multi attribute air indexing. [16]

8. Why does WAP dene its own security layer and does not rely on the security provided by the mobile phone network? What problem does the WAP security layer causes? Think of end-to-end security. [16]

IV B.Tech I Semester Examinations,December 2011 :
Mobile Computing :
1. What is communication asymmetry? Explain in detail about communications asymmetry. [16]
2. Explain in detail about encapsulation procedures of mobile IP. [16]

3. (a) Mobile TCP is especially adapted to the problems arising from lengthy or frequent disconnections. Explain.
(b) Mobile TCP splits the TCP connection in to two parts as Indirect TCP does, but still end-to-end connectivity is maintained. How? [6+10]

4. (a) What are the limitations/problems with wireless and mobile networks? Explain them. Suggest solutions for the problems identified.
(b) What are the market trends of wireless and mobile networks? [10+6]

5. (a) How the performance of MACA varies in the following cases when RTS/CTS scheme is used
i. Small packets are transmitted.
ii. Large packets are transmitted.
iii. Mix of small and large packets are transmitted.
(b) Is the use of RTS/CTS a virtual reservation scheme. Comment. [10+6]

6. Explain in detail about wireless session protocol. [16]
7. (a) Discuss the improvement of various factors by cache in detail.
(b) Discuss various transactional models. [8+8]
8. Explain in detail about Hybrid routing protocols. [16]