CL7003 Wireless Sensor Networks M.E Question Bank : valliammai.co.in

Name of the College : Valliammai Engineering College
University : Anna University
Department : Electronics & Instrumentation Engineering
Subject Code/Name : CL7003-Wireless Sensor Networks
Degree : M.E C&I
Year : II
Semester : III
Document Type : Question Bank
Website : valliammai.co.in

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Valliammai Wireless Sensor Networks Question Paper

Unit I Introduction :
Part –A :
1. What is a Wireless Sensor Network?

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2. What are the characteristic requirements of Wireless sensor network?
3. What are the hardware components of a Wireless sensor network?
4. What is Single Hop and Multiple Hop?
5. What are the various roles of the sensor?
6. What is energy efficient routing?
7. Why sensor networks are different?
8. Differentiate between sensor networks and Adhoc networks.

9. Differentiate between sensor networks and MANETS.
10. List out the basic parts of a Wireless Sensor network.
11. Why multihop wireless communication is required for WSN?
12. State the deployment options for WSNs.
13. What are the various operating modes of a transceiver?
14. What are the characteristics of a transceiver?
15. Define Source and Sink.
16. List out the types of sources and sinks.
17. Define mobility.
18. What are the various types of mobility?
19. What is Data-Centric Network?
20. List out the different types of interaction pattern between sources and sinks in WSN

Part-B :
1. Explain the various challenges of wireless sensor networks. (16)
2. (i) Discuss the characteristic requirements of WSN. (8)
(ii) Explain the innovative mechanisms to realize the characteristic requirements of WSN.(8)
3. (a) Discuss in detail the Transceiver characteristics and structure. (16)
4. (i) Define the types of Sensors. (6)
(ii) Elaborate on the energy scavenging techniques for sensor nodes. (6)
(iii) Write about the operational states of a sensor node. (4)
5. Explain about energy consumption of sensor nodes in detail. (16)
6. With a neat diagram, Explain the sensor network architecture (16)
7. Explain tin detail the design principles of WSN.
8. (a) Write notes on
(i). Dynamic Energy and power management (6)
(ii). TinyOS and nesC (4)
(iii). Programming Models in WSN (6)
9. Write in detail about the communication device in a WSN. (16)
10. Discuss the potential applications of WSN. (16)

Physical Layer

Unit II :
Part –A :
1. Define the characteristic feature of wireless channel.
2. Define large scale fading and small scale fading.
3. List out the three fundamental modulations.
4. Define modulation and demodulation .
5. Discuss about frequency allocation.
6. Define symbol rate and data rate.
7. What is BER?
8. Define band pass modulation.
9. Discuss wave propogation.
10. State Huygen’s principle.
11. What is meant by Doppler Fading?
12. Define Path Loss and Attenuation.
13. State the various applications of channel models.
14. What is meant by AWGN?
15. Define Spread spectrum communication and its types.
16. Discuss about the quality of wireless channels.
17. Mention the measures for improving the channel quality.
18. List out the sources of distortion.
19. Define LOS.
20. Discuss about the choice of modulation.

Part-B :
1. Discuss in detail about Radio spectrum and Frequency allocation.
2. How will you transmit data using radio waves?
3. Briefly explain about the sources of distortion.
4. Write short notes on noise and distortion.
5. How will you stochastically capture the behavior of a Wireless Channel?
6. List out the Qualities & properties of WSN.
7. Write short notes on transceiver design characteristics.
8. Discuss in detail about the choice of modulation.
9. Discuss about Energy usage profile in WSN.
10. Briefly explain about power management techniques in WSN.

Unit III

Data Link Layer

Part –A :
1. What are the goals of MAC?
2. List out the schemes of MAC.
3. What are the difficulties of Medium Access in wireless networks?
4. List out the requirements for energy efficient MAC protocols.
5. Define Collision.
6. Define overhearing.
7. Define idle listening.
8. What is meant by schedule based MAC?
9. Define contention based protocol.
10. What do you meant by CSMA?
11. Define ALOHA.
12. Define RTS and CTS.
13. Define Wakeup concept.
14. What are the problems in wake up radio MAC protocols?
15. What is meant by framing and error control?
16. List out the features of link management.
17. List the various approaches of error control.
18. How will you use acknowledgements in different layers?
19. What are the three regions of communication?
20. What are the requirements of link quality estimation?

Part-B :
1. Briefly specify IEEE 802.15.4 MAC protocol and explain whether the MAC protocols of 802.11 & Bluetooth be used for WSN? Justify.
2. Elaborate on the requirements of MAC protocols for WSNs.
3. Explain the design approaches and performance of S-MAC protocol.
4. Explain the important classes of MAC protocols.
5. Discuss the PAMAS protocol in detail.
6. Elaborate on the concepts of Energy Efficient Unicast Routing Protocol.
7. Discuss the basics of Position Based Routing Protocol and content-based protocol for WSN.
8. Discuss about the fundamental tasks and requirements of MAC in detail.
9. Explain briefly the Link Layer protocols .
10. Describe in detail about SMACS.
11. Write short notes on error control ,framing, link management.