SPPU Computer Engineering (Semester 7)
Mobile Computing
May 2017
Total marks: --
Total time: --
INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary


Solve any one question from Q.1(a,b) &Q.2(a,b)
1(a) Compare Wired and Wireless Neworks based on advantages and disadvantages.
5 M
1(b) Explain using block diagram the process of authentication in a GSM Service.
5 M

2(a) Why CSMA/CD is not used in Wireless Networks?
5 M
2(b) Explain WPAN and WLAN with one example of each and what is WiMAX?
5 M

Solve any one question from Q.3(a,b) &Q.4(a,b)
3(a) Explain different wireless switching Techniques.
5 M
3(b) Explain various mobile operating systems and their features.
5 M

4(a) Differentiate beween CDMA and TDMA.
5 M
4(b) What is handover? When handover in mobile communication take place?
5 M

Solve any one question from Q.5(a,b,c) &Q.6(a,b,c)
5(a) Describe the registration of a visiting mobile node on handover.
6 M
5(b) What do you mean by tunneling, encapsulation and de-capsulation? How does a tunnel differ from a route?
6 M
5(c) Explain Mobile TCP? Give the advantages and disadvantages of Mobile TCP.
6 M

6(a) What is MANET? Explain DSR protocol in detail.
6 M
6(b) In tunneling , why the "Time to Live" is set to one when IP packet tunnels from the home to the foreign agent?
6 M
6(c) Explain Snooping TCP. Give the advantages and disadvantages of Snooping TCP.
6 M

Solve any one question from Q.7(a,b,c) &Q.8(a,b)
7(a) Explain what do you mean by data dissemination?
5 M
7(b) What do we mean by selective tuning? Discuss the methods used for selective tuning.
7 M
7(c) Explain the synchronization process.
4 M

8(a) Describe Push-based data-delivery mechanism. What are the advantagesand disadvantages of Push-based data-delivery?
8 M
8(b) Explain the reason for communication asymmetry in mobile network. Give examples of asymmetric communication architecture for data dissemination.
8 M

Solve any one question from Q.9(a,b) &Q.10(a,b)
9(a) What is mobile agent? Explain in detail the advantages of using a mobile agent.
8 M
9(b) Explain basic characteristics of mobile operating systems and write differnce between iOS and Android OS.
8 M

10(a) Explain the requirements of a mobile system overthe conventional one, also describe CODA file system.
8 M
10(b) Write Short note on.
i) Mobile-agent based architecture
ii) Anroid application development platform.
8 M



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