CS-801 Internet of Things - May 2024 Question Paper

Under each question, How to answer lists the points an answer should cover, outlined by CampusPrep from the syllabus. Check the details against your textbook.

1. 7 Marks
   aWhat is IoT Analytics? What is the role of things and Internet in IoT?
   How to answer

   • Define IoT Analytics and its purpose in extracting value from IoT data
   • Explain role of 'things' - sensing, actuation, data generation
   • Explain role of Internet - connectivity, transport, integration with cloud/services
   • Give IoT system example linking things and Internet to analytics
2. 7 Marks
   bExplain the IoT planes, various enablers of IoT, and the complex interdependencies among them with a block diagram.
   How to answer

   • Define IoT planes / layers and enablers
   • List key enablers: sensors, networks, cloud, analytics, security
   • Explain interdependencies among planes and enablers
   • Present block diagram showing planes and interactions
3. 7 Marks
   aCompare mechanical, soft and shape memory polymer based actuators.
   How to answer

   • Define mechanical, soft and shape memory polymer actuators
   • Compare principle of operation and materials
   • Compare force, displacement, speed, power and control
   • Compare applications, advantages and limitations
4. 7 Marks
   bCompare the common commercially available sensors used for IoT-based sensing applications.
   How to answer

   • List common commercial IoT sensors: temperature, humidity, pressure, motion, gas, etc.
   • Compare sensing principle, range, accuracy and output
   • Compare power, cost, interface and use cases
   • Summarize selection criteria for IoT sensing applications
5. 7 Marks
   aWhat is relation between WSN and IoT? Explain with example.
   How to answer

   • Define WSN and IoT
   • Explain WSN as enabling subsystem of IoT
   • Differentiate scope, architecture and Internet integration
   • Give example application using WSN nodes in IoT system
6. 7 Marks
   bExplain the concepts and terminology of RFID application.
   How to answer

   • Define RFID and its purpose in IoT
   • Explain tags, readers, frequencies and coupling
   • Explain terminology: active/passive tags, EPC, collision, range
   • Give RFID application examples
7. 7 Marks
   aExplain with example MQTT Protocol. What is role of MQTT protocol in IoT?
   How to answer

   • Define MQTT, publish-subscribe and broker model
   • Explain topics, publisher, subscriber, QoS levels with example
   • Explain lightweight nature and suitability for constrained devices
   • Explain role of MQTT in IoT messaging and telemetry
8. 7 Marks
   bExplain CoAP. How it can be used between devices on the same constrained network? Justify it.
   How to answer

   • Define CoAP, REST model and UDP basis
   • Explain methods, URIs, confirmable/non-confirmable messages
   • Explain operation between devices on same constrained network
   • Justify suitability: low overhead, sleepy nodes, resource discovery
9. 7 Marks
   aDiscuss the role of Data Analytics in Internet of Things (IoT).
   How to answer

   • Define IoT data volume, velocity and variety
   • Explain stages: collection, storage, processing and visualization
   • Explain descriptive, predictive and prescriptive analytics in IoT
   • Give IoT use-case showing value of analytics
10. 7 Marks
    bWhich kinds of vulnerability have been observed in IoT. Which attacks can exploit the vulnerabilities in Application/ Service layer?
    How to answer

    • List IoT vulnerability classes across layers
    • Focus on Application/Service layer weaknesses
    • Map attacks: injection, XSS, malware, data theft, DoS, etc.
    • Explain exploitation mechanism and impact
11. 7 Marks
    aClassify network types based on physical topologies and connection types with schematic diagrams.
    How to answer

    • Define physical topology and connection types
    • Classify: star, bus, ring, mesh, tree, point-to-point vs multipoint
    • Draw schematic diagram for each topology
    • Compare advantages, disadvantages and IoT usage
12. 7 Marks
    bExplain four common characteristics actuators used for selection.
    How to answer

    • Define actuator selection criteria
    • Explain four characteristics: e.g., displacement, force, speed, power, efficiency
    • Explain measurement and significance of each
    • Relate to IoT actuator choice example
13. 7 Marks
    aWhy security required in IoT? Explain in detail various security model in IoT?
    How to answer

    • Explain need for security: constrained devices, scale, privacy, safety
    • Define IoT security requirements: confidentiality, integrity, availability
    • Explain security models: layered, end-to-end, cloud-centric, etc.
    • Discuss authentication, access control and trust models
14. 7 Marks
    bWhat is IEEE 802.15.4 protocol, how it is related to IoT?
    How to answer

    • Define IEEE 802.15.4 PHY and MAC layers
    • Explain low-rate WPAN features: range, data rate, topologies
    • Explain relation to ZigBee, 6LoWPAN and IoT stacks
    • Explain use in constrained IoT sensing networks
15. 14 Marks
    Write short notes on two of the following:

    1. i)Review of basic microcontrollers and interfacing
    2. ii)Quantization error
    3. iii)ZigBee and its types
    4. iv)XMPP
    How to answer

    • Select any two topics from i-iv
    • For each: define, explain principle and key terms
    • Give diagram/example and IoT relevance where applicable
    • Summarize applications and limitations