M.Sc. (Semester III) (CBCS) Examination Mar/Apr-2018
Computer Science
MOBILE COMPUTING
Time: 2½ Hours
Max. Marks: 70
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
DECT stand for
Digital European Cellular Telex
Digitized Emergency Cellular Telephone
Digital European Cordless Telephone
Digital European Cellular Telephone
Waves in the range are used by submarines, because they can penetrate water and can follow the earth surface.
Low frequency
High Frequency
Very High Frequency
Ultra high Frequency
Within a certain radius of the sender transmission is possible, i.e., a receiver receives the signals with an error rate low enough to be able to communicate and can also act as sender.
Detection Range
Interference Range
Transmission range
Mobile range
is used for allocating a separated space to users in wireless networks.
Time Division Multiple Access
Channel division multiplexing
Time slots Multiple access
None of these
Now, GSM stands for
Group special mobile
Global system for mobile communication
Global system for mobile
Option and
TMSI stands for
Temporary mobile subscriber identify
Transmission mobile signals interfaces
Time for multiple signals Interface
None of the above
PLCP stands for
Physical layer connection protocol
Primary Layer connection protocol
Physical layer convergence protocol
Physical layer communication protocol
Bluetooth operates on channels in the 2.4 GHz band with 1 MHz carrier spacing
20
79
80
70

DHCP clients send a request to a server which the server responds.
DHCPDISCOVER
DHCPRECIVE
DHCPHOST
DHCPPOST
10) MANET stands for
Mobile Access Network
Mobile ad-hoc networking
Movable Network
Mobile Application for network

State following statements are True or False
04
Manifest is the configuration file for the android application
A layout is view hierarchies that control screen format and appearance of the views.
In bin folder contain the Android package files .ask built by the ADT during the build process and everything.
res/layout is a directory for files that define android apps interface.
Q.2

Write short notes on the following
06
Handover
Android Debugging

Answer the following
08
What is signal and Radio frequency?
What is android and explain any two applications?
Q.3
Answer the following
14

What are main benefits of spread spectrum system? How can spreading be achieved?

What are different advantages and disadvantages of cellular systems with small cells?
Q.4
Answer the following
14

Explain in detail Mobile Terminated Call and Mobile Originated Call

How a Piconet and Scatternet is formed in Bluetooth?
Q.5
Answer the following.
14

Draw the header format for IP-in-IP encapsulation and explain each field.

What is mobile TCP? Describe the term: snooping TCP, I-TCP.
Q.6
Answer the following.
14

What is Android? Explain the architecture and application of android.

Explain android Bluetooth with suitable example?
Q.7
Answer the following.
14
Write android MainActivity.xml and MainActivity.java that determine whether a person age is eligible for blood donor or not?
What is multiplexing? Explain the different techniques.