CS-801 Internet of Things - Jun 2025 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
   aDifferentiate between Logical and Physical design of IoT.
   How to answer

   • Define logical design: functional blocks, communication models and APIs
   • Define physical design: devices, protocols, gateway and cloud components
   • Compare on aspects: abstraction vs implementation, components, protocols
   • Give example IoT system showing both designs
2. 7 Marks
   bWhat is the functionality of IoT gateways? How does the IoT ecosystem work?
   How to answer

   • Define IoT gateway and its need
   • List functionalities: protocol translation, aggregation, filtering, security
   • Explain IoT ecosystem layers: devices, gateway, cloud, analytics, applications
   • Explain data flow in ecosystem
3. 7 Marks
   aExplain challenges and requirements of IoT device.
   How to answer

   • Define IoT device constraints
   • Explain challenges: power, security, interoperability, scalability
   • Explain requirements: sensing, connectivity, processing, energy
   • Summarize design implications
4. 7 Marks
   bExplain the following:

   1. i)Pneumatic
   2. ii)Sensor features
   How to answer

   • Define pneumatic actuator principle using compressed air
   • Explain construction and working with example
   • Define sensor and list key features: accuracy, range, sensitivity
   • Explain each sensor feature briefly
5. 7 Marks
   aWhat is the role of 6LoWPAN in IoT? How does 6LoWPAN differ from IPv4 or IPv6?
   How to answer

   • Define 6LoWPAN and its need for low-power networks
   • Explain role: IPv6 over IEEE 802.15.4, header compression, mesh
   • Compare frame size, addressing, header, power with IPv4/IPv6
   • Give IoT use cases
6. 7 Marks
   bWhat is ZigBee? Draw and explain about ZigBee architecture in detail.
   How to answer

   • Define ZigBee and IEEE 802.15.4 basis
   • Draw ZigBee architecture layers / topologies
   • Explain coordinator, router, end device roles
   • Explain applications and advantages
7. 7 Marks
   aWhat are the features and components of AMQP in IoT? How many frame types are there in AMQP?
   How to answer

   • Define AMQP and its use in IoT messaging
   • List features: reliability, routing, queuing, security
   • List components: broker, exchange, queue, binding
   • List and explain AMQP frame types
8. 7 Marks
   bHow COAP can be used between devices on the same constrained network?
   How to answer

   • Define CoAP and constrained network
   • Explain CoAP client-server interaction on same network
   • Explain methods, discovery, proxying without internet
   • Give example device-to-device use case
9. 7 Marks
   aCan you give an example of a particularly difficult cloud IoT integration you have worked on and how you overcame it?
   How to answer

   • Describe difficult cloud-IoT integration scenario
   • Identify issues: scalability, interoperability, latency, security
   • Explain steps taken to overcome issues
   • State outcome and lessons learned
10. 7 Marks
    bConstruct the Design of Smart home with Raspberry Pi and other hardware devices with neat sketch.
    How to answer

    • List components: Raspberry Pi, sensors, relays, Wi-Fi module
    • Explain interfacing and control logic for smart home
    • Provide neat sketch of connections
    • Explain working: automation, remote monitoring
11. 7 Marks
    aExplain the following:

    1. i)Review of Basic Microcontrollers and interfacing
    2. ii)CoAP Request-Response model
    How to answer

    • Summarize basic microcontrollers and interfacing with IoT
    • Explain CoAP request-response model with messages
    • Differentiate confirmable vs non-confirmable exchanges
    • Give example message flow
12. 7 Marks
    bExplain four common characteristics actuators used for selection.
    How to answer

    • Define actuator and role in selection
    • List four characteristics: force, speed, power, accuracy
    • Explain each characteristic briefly
    • Relate to IoT application selection
13. 7 Marks
    aWhy security required in IoT? Explain in detail various security model in IoT?
    How to answer

    • Explain need for security: attacks, privacy, constrained devices
    • Define IoT security requirements
    • Explain various security models in detail
    • Summarize layered security approach
14. 7 Marks
    bWhat is IEEE 802.15.4 protocol? How is it related to IoT?
    How to answer

    • Define IEEE 802.15.4 standard and its layers
    • Explain features: low-rate, low-power, topologies
    • Relate to IoT as base for ZigBee, 6LoWPAN
    • Give IoT applications
15. 14 Marks
    Write short notes on two of the following:

    1. i)IoT enablers
    2. ii)RFID features
    3. iii)SMQTT
    4. iv)IoT reference architecture
    How to answer

    • Select any two topics from the four options
    • Define each with key features/architecture
    • Explain working with IoT example
    • Summarize uses/advantages