Download GTU BE/B.Tech 2019 Winter 7th Sem New 2170710 Mobile Computing And Wireless Communication Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 7th Sem New 2170710 Mobile Computing And Wireless Communication Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ? VII (New) EXAMINATION ? WINTER 2019
Subject Code: 2170710 Date: 28/11/2019

Subject Name: Mobile Computing and Wireless Communication
Time: 10:30 AM TO 01:00 PM Total Marks: 70

Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.

Q.1 (a) Explain the purpose of Home Location Register (HLR). List the information
which is stored in Home Location Register (HLR).
03
(b) Compare Guided and Unguided media with its applications. 04
(c) What is wave propagation? Discuss various modes of propagation with
example.

07
Q.2 (a) Explain the terms with respect to OSI Model : Frame , Packet & Segment 03
(b) Identify the use of Mobile IP. How does Mobile IP work? 04
(c) Explain Addresses and Identifiers used in GSM with Example. 07
OR
(c) Illustrate different scenarios of Roaming and Handoff in GSM with proper
Examples.
07
Q.3 (a) What is the Nyquist Theorem and Why Does it Matter? 03
(b) Explain Hidden Station and Exposed Station Problem in wireless network.
Propose the solution for the problem.
04
(c) Describe Cell Splitting and Cell Sectoring with its limitations in detail. 07
OR
Q.3 (a) Why Multiplexing is needed in wireless communication and What is the use
of Guard band in telecommunication networks?
03
(b) Draw and Explain IEEE 802.11 protocol architecture. 04
(c) How Error Control is implemented using Automatic Repeat Request (ARQ)
mechanism?
07
Q.4 (a) Explain Voice and Data Routing in GPRS with proper diagram. 03
(b) Differentiate Amplitude, Frequency and Phase Shift Keying in Digital
Modulation with proper diagram.
04
(c) Explain each layer of Bluetooth Protocol Stack. 07
OR
Q.4 (a) Compare Paging and Location update in GSM. 03
(b) Define FHSS. Discuss advantages and applications of FHSS. 04
(c) State the applications of Bluetooth and differentiate between Piconet and
Scatternet with neat diagram.
07
Q.5 (a) Draw and explain MAC frame Format in WLAN. 03
(b) We have a channel with a 1-MHz bandwidth. The SNR value for this
channel is 63. What are the appropriate Bit rate and Signal level using
Shannon?s and Nyquist?s Formula?
04
(c) Describe Android application Architecture. 07
OR

Q.5 (a) Enlist and Explain services provided by IEEE 802.11. 03
(b) A typical voice channel has SNR as 30dB and Bandwidth as 2.7KHz.
Calculate the approximate maximum information capacity of the channel?
04
(c) Enlist & Explain common layouts available in android. 07
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