M.Sc. (Semester III) (CBCS) Examination Oct/Nov-2017
Computer Science
MOBILE COMPUTING
Day Date: Saturday, 18-11-2017 Max. Marks: 70
Time: 02.30 PM to 05.00 PM
Instructions: Question no. 1 and 2 are compulsory.
Attempt any 3 questions from Q. no. 3 to Q. no. 7
Figures to the right indicate full marks.
Q.1 Choose correct alternatives. 10
MIN stands for
Mobile Identification Number Mobile Internet
Mobility In Network None of the above
Range of radio transmission frequencies for digital audio broadcasting
takes MHz.
1400-1500 223-230
100-200 20-2000
Signal are function of and
Light and sound Time and location
Radio and infra-red Transmission and Receiving
Frequency division multiple accesses (FDMA) comprises all algorithms
allocating frequencies to transmission channels according to the

FDMA FTM
FDM FARA
The mobile station MS is connected to the GSM public land mobile
network (PLMN) via the interface.
O Um
bss msc
A gateway MSC (GMSC) has additional connections to other fixed
networks, such as PSTN and ISDN. Using additional
Standard signaling system BSC
MSC Interworking functions
The PLCP stands for
Physical layer convergence
protocol
Physical layer
communication protocol
Physical layer connection
protocol
None of these
is a collection of Bluetooth devices which are
synchronized to the same hopping sequence.
Piconet
Bluetooth
Network
Internet
Page 2 of 2
SLR-MG-301
splits TCP connection into two connections.
Snooping TCP I-TCP
T-TCP M-TCP
10) In Mobile TCP "snoops" data and acknowledgements,
local retransmission?
Snooping TCP I-TCP
T-TCP M-TCP
State True or False. 04
A service started when an application component, such as an activity,
starts it by calling on service
The system calls this method when the service is no longer used and
is being destroyed.
Linear Layout is a view that aligns all children in single direction,
vertically or horizontally.
On View is a view group that display a list of scrollable items.
Q.2 Write short notes of the following. 08
TableLayout
MSC
Answer the following:-
What are the functions of SIM?
What are the standards of IEEE.11x?
Q.3 Answer the following.
What is signal prorogation? What are the additional signal propagation
effects?
07
Explain FHSS with suitable example? 07
Q.4 Answer the following.
How many scenarios which jamming signal in CSMA. 07
Explain MACA with suitable example? 07
Q.5 Answer the following.
Draw the GSM structure and explain the difference between MSC and
GMSC.
07
What is IEEE802.11 standard? Explain system architecture with diagram. 07
Q.6 Answer the following.
Configuration process of DHCP with diagram. 07
What are main benefits of spread spectrum system? How can spreading
be achieved?
07
Q.7 Answer the following.
What is android? Explain the architecture and application of android. 07
Justify the activity life cycle with suitable example. 07