Download JNTUH MCA 5th Sem R15 2019 April-May 824AZ Mobile Computing Question Paper

R15

Code No: 824AZ

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JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

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MCA V Semester Examinations, April/May - 2019

MOBILE COMPUTING

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Time: 3hrs

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Max.Marks:75

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Note: This question paper contains two parts A and B.

Part A is compulsory which carries 25 marks. Answer all questions in Part A. Part B

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consists of 5 Units. Answer any one full question from each unit. Each question carries
10 marks and may have a, b, c as sub questions.

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PART - A

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5 ? 5 Marks = 25

1.a) Explain the 3-tier architecture for Mobile Computing.

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[5]

b) Brief about NSS component of GSM protocol.

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[5]

c) Distinguish the adhoc wireless network from the one with infrastructure.

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[5]

d) Write about CLDC configuration of J2ME.

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[5]

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e) Differentiate Lossy and lossless compressions of Multimedia.

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[5]

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PART - B

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5 ? 10 Marks = 50

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2.a)

Explain how Mobile IP solves the IP addressing issues of Mobile environment?

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b)

Write about applications of Mobile Computing.

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[5+5]

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OR

3.a)

Based on the environment mobility characteristics, mention the different Mobile

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Computing functions.

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b)

Mention the salient features of IPv6 protocol.

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[5+5]

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4.

With a neat sketch write about the GSM system architecture.

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[10]

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OR

5.

Write about SMS value-added Services Architecture with the help of a diagram. [10]

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6.a)

Write about IEEE 802.11 WLAN architecture.

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b)

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Write about any one IEEE 802.11 Physical layer protocol.

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[5+5]

OR

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7.a)

Explain how mobility is dealt with in Wireless LAN?

b)

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Write about WLAN Security.

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[5+5]


8.a)

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Giving the hierarchy, write about UI elements in MIDP of J2ME.

b)

Brief about the H.323 framework for Voice Over IP (VOIP).

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[5+5]

OR

9.

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With a neat sketch, write about the Windows CE architecture.

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[10]

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10.a) Write about Audio and Video Coder and Decoders (CODECs).



b) Write about 3GPP security architecture.

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[5+5]

OR

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11.

Through the architectural diagram, elaborate about IP Multimedia Subsystems (IMS).

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[10]



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