UNIT III

PART-A
1. Mention various performance metrics of WSN.
2. List the factors that are essential for PHY design in WSNs.
3. Define Dynamic Modulation Scaling
4. Differentiate between contention based protocols and schedule based protocols.
5. What is geographic addressing?
6. What are Nested Queries?
7. Briefly specify IEEE 802.15.4 MAC protocol.
8. Can the MAC protocols of 802.11 & Bluetooth be used for WSN? Justify.
9. State the fundamental tasks of Address Management in WSN.
10. Give the significance of uniqueness of addresses w.r.t WSN.
11. Differentiate WSN routing with Adhoc routing.
12. Highlight the salient feature in location based routing.
13. Consider the third iteration of leach protocol. If the desired number of nodes per cluster
is 10,what is the threshold calculated for a node during its random number generation.
14. List out the key ingredients of ARQ protocols

PART-B
1. Explain the concepts of Mediation Device protocol.
2. Elaborate on the requirements of MAC protocols for WSNs.
3. Discuss the PAMAS protocol in detail.
4. Explain the design approaches and performance of S-MAC protocol.
5. Describe the Low Energy Adaptive Clustering Hierarchy.
6. Explain the important classes of MAC protocols.
7. Explain the concept of TRAMA protocol.
8. Discuss the distributed assignment of network wide and locally unique MAC
address for WSN
9. Elaborate on the concepts of Energy Efficient Unicast Routing Protocol.
10. Discuss the basics of Position Based Routing Protocol for WSN.
11. Discuss about content-based addressing in detail.
12. Explain briefly the address assignment algorithm.
13. Describe in detail about SMACS.
14. Explain efficiency by in-network processing.
15. Explain geographical forwarding .
16. Explain data centric routing protocols.
17.Explain how duty cycled approach is used to transit between listen state and
sleep state in S-MAC control.
18.Discuss the working procedure of IEEE802.11 in wireless sensor network.
19. Explain indetail about spare topology and energy management.
20. Explain about geographical routing protocol.

UNIT IV
PART-A
1. What is localization and what is the advantage of localization?
2. Discuss on the parameters defined by the homogenous topology control
3. Explain how clustering solves the issue of scalability on WSN
4. List various services offered by localization
5. Why is topology control necessary for WSN?
6. What are the advantages of clustering?

PART-B
1. Discuss in details any two localization and positioning algorithms.
2. Explain in details sensor tasking and control mechanism.
3. Explain any two time synchronization algorithms of WSN.
4. Discuss on Angle of Arrival (AOA) and Time Difference of Arrival (TDOA)
based tracking mechanisms.
5. Discuss about importance of time synchronization in WSN . Explain the different
latency in the channel. Also estimate the clock phase difference using three
message exchange.
6. Explain the concept of localization and positioning in detail.
7. Write a brief note on sensor tasking and control.
8. What are task-driven in sensor nodes and explain.
9. What is the information based tasking and explain utility measures.
10. Briefly explain Hierarchical routing protocols.
11.Analyze the functionality and performance of two tier hierarchical cluster topology in
comparision to other topologies
12. Explain sensor Tasking and Control.
13. ) Explain secure routing in Ad Hoc Wireless Networks

14. Discuss about the different security protocols.

15. Explain how security is provided in adhoc sensor networks.

16. Describe the time synchronization in adhoc sensor networks.

17. Describe the Low Energy Adaptive Clustering Hierarchy.

18. Explain about cluster head gateway switch routing protocol.

19. Explain in brief about Clustering in WSN?

20 .Explain in brief about Network Security Requirements in WSN?

UNIT V
PART-A

1. List the major concern sensor node hardware.

PART-B
1. Explain in detail the programming challenges and state-centric programming in
sensor networks.
2. Write detailed notes on any one node-level software platforms.
3. Briefly explain node-level software platforms and node-level simulators.
4. Explain clearly about Berkely Motes. Mention the advantages and disadvantages
of it.
5. What are the different types of platforms available for sensor networks and
explain any one in details.
6. Explain the challenges for sensor network platforms.
7. Explain about TINYGALS.
8. Explain about PIECES.
9. Discuss about the Node level simulators.
10. Explain briefly the address assignment algorithm.

11. Describe the Berkeley Motes in detail.

12. Give the description of future direction of Wireless Sensor Networks.

13. Explain different symmetric key algorithms.

14. Write short notes on a) Node level simulators b) Ultra wide band radio communication.

15.