M.Sc. (Semester IV) (CBCS) Examination Mar/Apr-2018
Electronics
WIRELESS SENSOR NETWORK
Time: 2½ Hours
Max. Marks: 70
Instructions: Q. and are compulsory. Answer any three questions from Q.3 to Q.7 Answer any 5 questions. Figures to the right indicate full marks.
Q.1
Choose the alternatives given below.
08
Category C2WSN, of Wireless Sensor Network utilizes Routing.
Dynamic
Static
Multihop
None of these
As per the IEEE 802.15.4 standard, total channels are made available for Wireless Communication.
20
25
21
27
The IEEE designation for Wireless LAN is
802.15
802.2
802.11
802.16
In topology there is a central controller or hub.
Star
Mesh
Ring
Bus
is Reduced Function Device.
Coordinator
Router
End Device
Both and
layer having the availability of an optional super frame structure.
PHY
MAC
Application
Transport
In PEGASIS, final aggregation of data is given to
Chain leader
Cluster head
End device
None of these
In ISM band, the frequency band 868.3 MHz having data rate.
20 kbps
40 kbps
20 Mbps
250 kbps
State True or false.
06
Wireless Sensor Nodes are not autonomous devices.
In Wireless Sensor Network protocol stack, the task management plane, detects and registers movements of nodes.
In WSN, each Wireless Sensor Node has its own ID.
By default, Zigbee operates in Transparent Mode.
In PEGASIS is the suitable example of adaptive routing.
Every RF data packet sent over-the-air contains a Source Address and Destination Address field in its header.
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Q.2
Attempt any two of the following.
10
Write a note on standard Wireless Sensor Nodes.
Explain protocol stack for Wireless Sensor Network.
What do you mean by energy management in Wireless Sensor Network?
Mention the different features of Zigbee.
04
Q.3
With suitable block diagram, explain the architecture of Wireless Sensor Node. Describe the classification of Wireless Sensor Nodes.
08
Briefly explain the characteristics of Wireless Sensor Network.
06
Q.4
What do you mean by Wireless Sensor Network? With suitable diagram describe types of WSN.
08
Give comparative discussion on functionalities of the sensor nodes.
06
Q.5
Design the Wireless Sensor Network for agriculture applications using Zigbee module and AVR microcontroller.
08
Explain the standard IEEE 802.15.4.
06
Q.6
With pin description give architecture of the Zigbee device. Explain API and Transparent modes of the Zigbee device.
08
Write a note on network topologies.
06
Q.7
What do you mean by hierarchical architecture of Wireless Sensor Network? Describe in detail the function of the LEACH protocol.
08
Explain the applications of Wireless Sensor Networks in details.
06