MOBILE COMPUTING-MARCH,2011

SIXTH SEMESTER DIPLOMA EXAMINATION IN ENGINEERING/TECHNOLOGY-MARCH,

2011

PART-A

(Maximum marks:15)

v  Answer the following questions in one or two sentences:

1.What is internet working?

2.List the advantages of using small cells.

3.What is HLR?

4.What is IMSI?

5.Write the MOT protocol structure.

6.List the different types of orbits in satellite systems.

7.state the use of SDP.

8.What is a piconet?

9.What is care of address?

10.List the goals of mobile IP.

PART-B

(Maximum marks:60)

(Answer one full question from each unit)

Unit-1

v  (a)What is MAC?Describe the motivation for specialized MAC in wireless networks.(6)

     (b)Write the applications of mobile communications.(6)

OR

v  (a)Describe the different layers of TCP/IP protocol architecture.(12)

Unit-2

v  (a)How is localization done in GSM?.(6)

          (b)Explain the security services in GSM?.(6)

OR

v  (a)Describe the steps in mobile originated call and mobile terminated call in GSM with neat sketches.(12)

          

UNIT-3

v  (a)Explain the applications of satellite system.(6)

          (b)Explain digital video broadcasting.(6)

OR

v  (a)Describe cyclic repetition of data.(6)

          (b)Explain the different handover mechanisms in satellite systems.(6)

UNIT-4

v  (a)Explain the IEEE 802.11 system architecture with neat diagrams.(12)

         

OR

v  (a)Write the applications of Bluetooth.(6)

          (b)State the advantages and disadvantages of wireless LAN.(6)

UNIT-5

v  (a)Explain snooping TCP.Write its advantages and disadvantages(12)

          

OR

v  (a)Writes notes on

         (i)IPv6                         (iii)Tunneling

         (ii)DHCP                      (iv)Encapsulation (12)

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