Anna University Trichy 2011 B.E Computer Science and Engineering /B.Tech,IL/ EC1411 MOBILE COMPUTING (REGULATION 2007) - Question Paper

H 0042

B.E/B.Tech.DEGREE EXAMINATION,APRIL/MAY 2011

EIGHTH/SEVENTH SEMESTER

info TECHNOLOGY

EC1411 MOBILE COMPUTING
(Common to Computer Science and Engineering)

(REGULATION 2007)

Time: 3 hours Maximum:100 marks

ans ALL ques..

PART A-(10*2=20 marks)

1.What is the purpose of SHF?

2.Draw the time domain and frequency domain represenatation of a signal.

3.Write down the formula to keep the satellite in a stable circuit orbit.

4.What is Geostationary earth orbit?

5.Mention a few advantages of WLAN.

6.Classify the WLAN as infrastructure based networks and wireless ad-hoc based network.

7.Define COA.

8.What is meant by minimal encapsulation?

9.What are the advantages of M-TCP?

10.What is the use of wireless session protocol in WAP?

PART B-(5*16=80 marks)

11. elaborate the main benefits of a spread spectrum system?How can spreading be achieved?How can DSSS systems benefit from multi-path propagation? (16)

or

12. elaborate the main reasons for using cellular systems?How is SDM typically realized and combined with FDM?How does DCA influence the frequencies available in other cells? (16)

13. With suitable diagram,explain the GSM system architecture. (16)

or
14.(a)What are the typical data rates in DECT?How are they achieved considering the TDMA frames? (8)

(b)How could location based services and broadcast systems work together? (8)

15.Explain in detail the system architecture of IEEE 802.11 (16)

or

16.(a)With a focus on security,what are the issues of WLAN? (6)

(b)What are the advantages and issues of forwarding mechanism in Bluetooth networks regarding power saving and network stability? (10)


17.(a)Draw the Agent advertisement packet and discuss its fields. (8)

(b)Explain the registration process of mobile node with home agent. (8)

or

18.(a)How can DHCP be used for mobility and support of mobile IP? (8)

(b)Briefly discuss about destination sequence distance vector. (8)

19.Explain the concepts of I-TCP in detail. (16)

or
20.Discuss in detail the WAP 2.0 architecture with diagram. (16)

Earning:   Approval pending.