T.Y. M.C.A. (Part (Under Faculty of Engg.) Examination, 2016
MOBILE COMMUNICATION
Day and Date Tuesday, 29-11-2016 Total Marks 100
Time 10.30 a.m. to 1.30 p.m.
Instructions Figures to the right indicate full marks.
Q.3 and Q.5 are compulsory.
1. Choose the correct alternative. 20
The ground wave work at frequency
2 MHz 2 30 MHz 30 40 MHz None of these
In frequency division multiplexing the space between interface ranges is called
Interference Guard space Space All of these
layer is responsible in simplified reference model for end to end
connection.
Data link layer Network layer Transport layer Physical layer
In 1991, ETSI adopted the standard for digital cordless telephony.
ITU CEPT DECT GSM
Disadvantage of FDMA is
Antennas typically fixed Guard space needed
Synchronization difficult Inflexible
In one channel carries all transmissions simultaneously.
CDMA FDMA TDMA SDMA
The works fine for a light load and does not require any complicated
process.
Spread ALOHA Classical ALOHA
Slotted ALOHA Simple ALOHA
Seat
No.
SLR-ER 28
Submarine communication or AM radio uses waves.
Sky Ground Line of sight Micro
In CSMA, all situations wishing to transmit access the medium at the
same time as soon as it becomes idle.
p-persistent 1-persistent non-persistent 2-persistent
10) DAMA also called as
Pure ALOHA Slotted ALOHA
Reservation ALOHA Polling
11) The idea of spreading the spectrum using orthogonal codes is in
SDMA FDMA CDMA TDMA
12) Registration is depending on
Care of Address Foreign Agent
Home Network Home Agent
13) Disadvantage of HAWAII is
Manageability Efficiency Transparency Implementation
14) For agent advertisements protocol is used.
TCP IP RFC ICMP
15) A is an end-system or router that can change its point of attachment
to the internet using mobile IP.
Mobile node Foreign agent Home agent Care-of address
16) Data is trasmitted is small portions, called
explores bursts bounces destroys
17) Initially DHCP client sends
DHCPDISCOVER DHCPREQUEST
DHCPCLIENT None
18) The can provide several services to the MN during its visit to the
foreign network.
Mobile node Foreign agent Home agent Care-of address
SLR-ER 28
19) A socket consists of
address and port address
port location
20) encapsulation allows the encapsulation of packets of the protocol
suite into the payload portion of a packet of another protocol suite.
IP-in-IP Minimal Generic routing Maximum
SECTION I
2. Write short note on any four.
Advantages of Cellular Systems
Multi-path propagation
PRMA
RSS
GSM TDMA frame
MTC.
3. Explain A3, A5, A8 algorithms is GSM security. 10
Explain handover in UMTS. 10
OR
What is multiplexing Give different techniques of multiplexing of a signal. 10
SECTION II
4. Write short note on any four.
Design goals for WLAN.
Infra red vs radio transmission.
The steps for roaming between access points.
Agent solicitation.
Hawaii.
5. Explain in detail networking of Bluetooth devices. 10
What is IEEE 802.11 Explain its two basic architectures. 10
OR
What are three phases of different competing nodes in EY-NPMA Give
details of each. 10