TYMCA (Part (Under Faculty of Engg.) Examination, 2017
MOBILE COMMUNICATION
Day and Date Thursday, 4-5-2017 Total Marks 100
Time 10.30 a.m. to 1.30 p.m.
Instructions Figures to the right indicates marks.
Q. 3A. and Q. 5A are compulsory.
Write an example if necessary.
MCQ/Objective Type Questions
1. Multiple Choice Questions. 20
The type of access used in GSM technology is
FDMA/TDMA CDMA
OFDMA None of the above
The type of access technology which can enhance the battery life is
CDMA TDMA
OFDMA None of the above
The core concept used in cellular technology is
TDM Frequency reuse
Code reuse None of the above
The process of channel coding, encryption, multiplexing and modulation for
trans direction and reverse for reception are to be carried out by
BTS BSC
MSC MS
The modulation technique used for mobile communication systems during
World War II was
Amplitude modulation Frequency modulation
ASK FSK
introduced frequency modulation for mobile communication
systems in 1935.
Edwin Armstrong Albert Einstein
Galileo Galilei David Bohm
Fading of the received radio signals in a mobile communication environment
occurs because of
Direct Propagation Multipath Propagation
Bi-path Propagation None of these
A antenna which attempts to direct all its energy in a particular direction is
called as a
Directional Antenna One to One Antenna
Propagation Antenna Single Direction Antenna
A small division of a given geographical area is known as
Shell Cell
Core Kernel
10) Communication between mobile phone was started in
1946 1947
1948 1952
11) The layer responsible for routing of packets is
Data link Network layer
Physical layer Transport layer
12) In IEEE 802.11, a is made of stationary or mobile wireless
stations and an optional central base station, known as the access point

ESS BSS
CSS None of these
13) is a process of converting plaintext into cipher text.
Authentication Decryption
Compression Encryption
14) Bluetooth transceiver devices operate in band.
2.4 GHz ISM 2.5 GHz ISM
2.6 GHz ISM 2.7 GHz ISM
15) Range of Bluetooth devices
Large Extended
Basic Short
16) In wireless ad-hoc network
Access point is not required Access point is must
Nodes are not required None of the mentioned
17) Infrared signals can be used for
Long-range communication Short-range communication
Both None
18) Specifications for a wireless LAN are called
Standard 802.3z Standard 802.3u
Project 802.3 IEEE 802.11
19) The communication between keyboard and computer is
Simplex Half-duplex
Full-duplex Automatic
20) Wireless LANs implement security measures in the
System Layers Data Link Layers
Sub Layers Multi Layers
SECTION I
2. Write short note on (any 4). 20
A market for mobile communication.
Cellular systems.
GSM.
Frequencies for radio transmission.
A simplified reference model.
3. What is Wireless Communication Explain advantages and disadvantages of
Wireless Communication. 10
Explain the needs for MAC algorithm. 10
OR
Define modulation and explain different modulation techniques. 10
SECTION II
4. Write a short note on (any 4). 20
Bluetooth.
WAP architecture.
Mobile IP.
Infrared Vs radio transmission.
WLAN disadvantages.
5. Explain basic architecture of hierarchical mobile IPV6. 10
Discuss benefits of mobile Ad-hoc network. 10
OR
Explain wireless datagram protocol. 10