M.Sc. (Electronics) (Semester-IV) (CBCS) Examination, 2017
WIRELESS SENSOR NETWORK
Day Date: Wednesday, 26-04-2017 Max. Marks: 70
Time: 02.30 PM to 05.00 PM
N.B. Attempt five questions.
Q.No.1 and Q. No. 2 are compulsory.
Attempt any three questions from Q. No. 3 to Q. No.
7.
Figures to the right indicate full marks.
Q.1 Choose the alternatives: 08
The Zigbee device is operating at
2.4GHz and 250 KBps 933MHz and 40KBps
833MHz and 30 KBps None of these
By default, ZiGbee operate in Mode.
Command API
Transmission Transparent
According to IEEE standard, is the working group for
Wireless PAN.
802.3.2 802.2.8 802.15.4 802.16.2 8
In ISM band, the frequency band from 902MHz to 928 MHz
having channels.
1 10 16 27
is the chain based protocol.
LEACH SPIN PEGASIS TEEN E
When Zigbee is not receiving or transmitting data, then it is in

Transmit Mode Sleep Mode E
Command Mode Idle Mode
layer in WSN protocol stack helps to control the
modulation type.
Application Transportation Q
Physical Presentation
Network establishment and control is the function of
Page 2 of 2
Router Coordinator End device Switch E
State true or false: 06
Category C1WSN, of Wireless Sensor Network is typically
confined to the short range applications.
Low Energy Adaptive Clustering Hierarchy, LEACH is based
on data cluster formation.
In ring topology there is a central controller or hub.
The single 868.3 MHz channel in ISM band is used strictly in
the European Union.
In beaconing mode, Wireless Sensor Nodes are always
active.
The IEEE designation for Zigbee is 802.11.a.
Q.2 Attempt any two 10
Describe the function of coordinator, router and end
device.
ii) Write a note on ISM band.
iii) Write a note on security issues in the Wireless Sensor
Network.
Mention the typical applications of WSN in detail 04
Q.3 What do you mean by Wireless Sensor Network? With suitable
diagram describe architecture of WSN.
08
B Explain the standard IEEE 802.15.4 06
Q.4 Explain Energy management issues in Wireless Sensor
Network.
08
Explain the function of SPIN protocol in detail. 06
Q.5 What do you mean by hierarchical architecture of Wireless
Sensor Network? Describe in detail the function of the PEGASIS
protocol.
08
Explain the pin description of Zigbee module. 06
Q.6 Design the Wireless Senior Node for measurement of
temperature using Zigbee module and AVR microcontroller.
08
With suitable block diagram explain the architecture of Wireless
sensor Node.
06
Q.7 Describe in detail with network layers recommended for WSN.
Explain MAC layer in detail
08
Write a note on unicast and broadcast modes of Zigbee. 06