This document outlines an internal assessment test for a course on Ad Hoc and Wireless Sensor Networks. The test contains 3 parts: Part A has 5 short answer questions; Part B has the student answer any 2 of 3 longer questions; Part C has the student answer 1 of 2 questions in detail. Questions cover topics like data confidentiality, denial of service attacks, TESLA security, passive sensors, Contiki OS, key management, Berkeley motes, WSN simulators, layer-wise attacks, and sensor node architecture. The test is worth a maximum of 50 marks and takes 1.5 hours to complete.

1. NELLAI COLLEGE OF ENGINEERING
INTERNAL ASSESSMENT TEST-III
B.E/B.Tech DEGREE EXAMINATIONS NOV 2021
SEVENTH SEMESTER
ELECTRONICS AND COMMUNICATION ENGINEERING
EC8702-Ad hoc and Wireless SensorNetworks
TIME: 1.30 Hours Maximum: 50 marks
PART-A (5 x 2 = 10) Answer ALL
Questions
1. Define data confidentiality.
2. Explain Denial of service attack
3. What are various TESLA security consideration?
4. What are passive sensors?
5. What are basic features of Contiki OS programming model?
PART-B (2x13=26) (Answer any two)
1. Discuss about key management in sensor network security.
2. Explain in detail about Berkeley motes.
3. What are WSN simulators? Explain with example.
PART C (1*14=14) (Answer any one)
1. Discuss in detail about layer wise attacks in WSNs.
2. Explain sensor node archietecture.
NELLAI COLLEGE OF ENGINEERING
INTERNAL ASSESSMENT TEST-III
B.E/B.Tech DEGREE EXAMINATIONS NOV 2021
SEVENTH SEMESTER
ELECTRONICS AND COMMUNICATION ENGINEERING
EC8702-Ad hoc and Wireless SensorNetworks
TIME: 1.30 Hours Maximum: 50 marks
PART-A (5 x 2 = 10) Answer ALL
Questions
6. Define data confidentiality.
7. Explain Denial of service attack
8. What are various TESLA security consideration?
9. What are passive sensors?
10.What are basic features of Contiki OS programming model?
PART-B (2x13=26) (Answer any two)
4. Discuss about key management in sensor network security.
5. Explain in detail about Berkeley motes.
6. What are WSN simulators? Explain with example.
PART C (1*14=14) (Answer any one)
1. Discuss in detail about layer wise attacks in WSNs.
2. Explain sensor node archietecture.