Mobile Computing Model Question Paper 2011 6g233q

MOBILE PART A

10X2=20

1.Define Analog and Digital Modulation. 2. What are the main benefits of spread spectrum? 3.Differentiate symmetric and asymmetric communication system. 4.Wha t are the reasons for delay in GSM for packet data transfer. 5.What is HIPERLAN? 6.State the objectives of UMTS. 7.What advantages does the use of IP V6 offer for mobility? 8.Why is the physical layer of IEEE 802.11 subdivided? 9.What is the purpose of DH? 10.What are the advantage and disadvantage of mobile T? PART B 1.(a)Explain the following (a) MAC (b) SDMA

5X10=80 (16)

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(b)Explain in detail about multiplexing (16) 2.(a)Explain the functional architecture of GSM (16)

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(b) Discuss about digital video broadcasting (16) 3(a).Explain the concept of blue tooth architecture (16 ) Or (b).Explain the concept of IEE 802.11 medium access control layer (16). 4.(a)Explain the following with respect to mobile IP. (a) IP Packet delivery (4) (b) Agent Discovery (4) (c) Registration (4) (d) Tunneling (4) Or (b) Discuss tunneling and encapsulation mechanism and reverse tunneling (16). 5.(a) (i)Briefly explain about indirect and snooping T(8) (ii) Briefly discuss about WAP(8) Or (b) Explain in detail about traditional T(16) -----------------------------------------------------------------------------------------------------------------