M.Sc. (Semester IV) (CBCS) Examination Nov/Dec-2018
Electronics
WIRELESS SENSOR NETWORK
Time: 2½ hrs Max. Marks: 70
Instructions: Attempt five questions.
Q. 1 and 2 are compulsory.
Answer any three questions from Q.3 to Q.7
Figures to the right indicate full marks.
Q.1 Choose correct answer. 08
Category C1WSN, of Wireless Sensor Network utilizes
Routing.
Single- hop Static
Dynamic None of these
To detects and registers movements of nodes, management
plane is utilized.
Power Mobility
Security Task
The IEEE designation for Ethernet communication is
802.3 802.2
802.11 802.16
The single 868.3 MHz channel in ISM band is used strictly in the

Americas Worldwide
Europe Australia
is data centric negotiation protocols.
LEACH SPIN
PEGASIS TEEN
When not receiving or transmitting data, the RF module is
Transmit Mode Sleep Mode
Command Mode Idle Mode
For the programming of the Zigbee device, the Digi Corporation has
provided very smart IDE called
Code Vision Keilu Vision
X-CTU NetBeans
Network establishment and control is the function of
Router Coordinator
End device Switch
State True or false. 06
Wireless Sensor Network is Distributed network.
Dynamic clustering is proactive clustering.
In LEACH, set up phase is longer than steady state phase.
In beaconing mode, Wireless Sensor Nodes are always active.
Router is Reduced Function Device.
MAC layer handles network association and disassociation.
Page 2 of 2
SLR-VJ-274
Q.2 Answer any two of the following. 10
Explain the features of Category-1 and Categoty-2 Wireless Sensor
Network.
Write a note on MAC layer.
Write a note on ISM band.
Mention the features of Zigbee. 04
Q.3 What do you mean by Wireless Sensor Network? With suitable diagram
describe architecture of WSN.
08
Explain mechanism of internal data flow in the Zigbee device. 06
Q.4 What do you mean by hierarchical architecture of Wireless Sensor
Network? Describe in detail the function of the LEACH protocol.
08
Explain protocol stack for Wireless Sensor Network. 06
Q.5 With pin description give an architecture of the Zigbee device. Explain
different modes of operation of the Zigbee device.
08
Give comparison between mesh and star topologies. 06
Q.6 Explain the standard IEEE 802.15.4. Compare between Bluetooth, WiFi and
Zigbee technologies.
08
Write a note on energy management in Wireless Sensor Network. 06
Q.7 Design the Wireless Sensor Node for measurement of humidity using
Zigbee module and AVR microcontroller.
08
Write a note on programming of Zigbee. 06