B.Sc. (Computer Science) Sem 6 March 2025 March 2025 Wireless & Sensor Network Question Paper - Mumbai University | munotes

Questions asked in this paper

1. Q1 Explain the different components involved?
   • d. What are the primary objectives when optimizing a Wireless Sensor Network, and how do they impact performance?
   • e. Why are gateways considered essential in the functioning of Wireless Sensor Networks? How do they facilitate communication?
   • f. What are the major issues and challenges encountered when designing and deploying sensor networks, and how do they affect their efficiency?
2. Q2 Attempt the following questions(Any 4) 20 marks
   • a. How do routing strategies operate in Wireless Sensor Networks, and what are the different approaches to optimize data transmission?
   • b. Explain the SPIN (Sensor Protocols for Information via Negotiation) protocol and its role in sensor networks?
   • c. How does the process of congestion detection and avoidance function in wireless sensor networks to maintain efficient communication?
   • d. What is the Low Energy Adaptive Clustering Hierarchy (LEACH) protocol, and what are its strengths and weaknesses in WSNs?
   • e. Describe the transport control protocols specifically designed for Wireless Sensor
   • f. How does the Power-efficient gathering in Sensor Information System (PEGASIS) routing protocol work, and what benefits does it provide in sensor networks? Attempt the following questions(Any 4) 20 Marks
   • a. What distinguishes GEO, LEO, and MEO satellite orbits, and how do they differ in terms of coverage and functionality?
   • b. What are the key characteristics and features of the DECT (Digital Enhanced Cordless
   • c. In what ways is satellite communication used and what are some of its major
   • d. What benefits do cellular systems offer, particularly in terms of network performance and user experience?
   • e. How does signal propagation work with different types of antennas, and how do these antenna types affect the transmission of signals?
   • f. Explain the system architecture of UMTS (Universal Mobile Telecommunications System) with a detailed diagram, highlighting its key components and functions?
3. Q4 Attempt the following questions(Any 5) 15 marks
   • a. Provide a brief overview of the security services offered by GSM and their role in ensuring communication privacy and integrity
   • b. Explain the terms : a) Spread Spectrum and b) TETRA technologies
   • c. What are the main components of the Sensor MAC (Medium Access Control) protocol, and how do they contribute to the efficient operation of wireless sensor
   • d. What are the differences between single-hop and multi-hop networks, and how do each of these network types impact data transmission and network efficiency?
   • e. What are important functions of transceivers in wireless communication systems, and how do they contribute to the overall network performance?
   • f. What defines an ad-hoc network? Describe its characteristics, and discuss the challenges it faces, especially in the context of Wireless Sensor Networks (WSNs)?

Read from the scan above, so a character or two may differ. The scan is the original.