M.Sc.(Computer Science) (Semester III) (CGPA) Examination, 2017
MOBILE COMPUTING
Day Date: Saturday, 22-04-2017 Max. Marks: 70
Time: 02.30 PM to 05.00 PM
N.B. Q.1 andQ.7 are compulsory Questions.
Attempt any Three Questions from Q.3 to Q.7
Figures to right indicate full marks.
Q.1 Choose the correct alternatives: 10
DSSS meaning
Direct sequence spread spectrum Direct sequence space spectrum
Direct sequence space signals Direct source space spectrum
CSMA system, all stations wishing to transmit access the medium
at the same time, as soon as it becomes idle.
P-persistent Non- persistent persistent CA
EMS
Electrical message service Erosion mobile service
Enhanced Message service Enhanced Message service
The A interface is typically based on circuit- switched system.
PCM-40 PCM-20 PCM-30 PCM-25
THE Operation and maintenance center moniters and controls
all other network entities via the interface.
B I O C
A distribution system connects several BSSs via the AP to form a single
network and thereby extends the wireless coverage area. This network
is now called
Extended Service Set Extra Service Sell WLAN GSM
What is the use of content provider in android?
To send the data from an application to another application
To store the data in a database
To share the data between applications
None of the above.
What is Manifest.xml in android?
It has information about layout in an application
It has the information about activities in an application
It has all the information about an application
Page 2 of 2
None of the above
Forming groups of piconets called
Scatternet Bluetooth WIFI Infra read
10) Layouts in android?
Frame Layout Linear Layout
Relative Layout All of the above
Fill in the Blanks: 04
The main task of layer comprises channel coding and error
detection/correction.
Algorithm A3 is used for
is ADB in android
Techniques involve spreading the bandwidth needed to transmit
data in which does not make sense at first sight.
Q.2 Describe the following: 08
MOC
Android GUI architecture
Write a short note on: 06
Traditional TCP
Hidden Terminal
Q.3 What is Signal propagation? Explain the Path loss of radio signals. 07
Describe in details GSM architecture. 07
Q.4 What is the function mobile network layer? Explain conjunction control with a
suitable example.
07
What is the importance of having an emulator within the Android environment?
Explain with suitable example.
Q.5 What are the different states wherein a process is based? Describe any two with
example.
07
Describe architecture of an infrastructure based IEEE 802.11. 07
Q.6 What is scatter-net? Explain its architecture 07
What is spread spectrum? Explain in details DSSS. 07
Q.7 What is the handover? Explain its different scenarios. 07
What is Pico-net? Explain its architecture. 07