Session 07: A Reference IoT Architecture

Question 1

Layers in Reference IoT Architecture

Answer 1

1. Perception Layer (Sensor layer)
2. Network layer
3. Gateway layer (optional)
4. Data management layer (cloud platform)
5. Application layer

• Perception L:
  Sensors collect raw data from the physical environment based on their design and configuration.
• Network L:
  Ensure reliable and secure data transmission between devices and the cloud platform
• Gateway L:
  Perform data preprocessing, protocol translation, security measures, and device management tasks.
• Data Management L:
  Store data securely, cleans and integrates data from various sources, and provide tools for data analysis and visualization.
• Application L:
  Use data and insights from the cloud platform to deliver specific functionalities and UX.

Question 2

Considerations for designing and implementing a secure IoT architecture

Answer 2

1. Identify security requirements
2. Secure device provisioning and Authentication
3. Secure communication Channel
4. Implement Access control and Authorization
5. Secure data storage and processing
6. Continuous monitoring and threat detection
7. Secure Life Cycle Management

Question 3

Communication protocols in IoT?

Answer 3

1. Wi-fi
2. Bluetooth
3. Satellite communication
4. NFC and DFID

Question 4

Application layer protocols?

Answer 4

1. MQTT (Message Queuing Telemetry Transport)
2. CoAP (Constrained Application Protocol)

Question 5

Transport layer protocol?

Answer 5

1. UDP (User Datagram Protocol)
2. TCP (Transmission Control Protocol)

Question 6

Network layer protocols?

Answer 6

1. IPV6 (Internet Protocol Version 6)
2. 6LoWPAN (IPV6 over Low-Power Wireless Personal Area Network)

Question 7

Data Link Layer protocols?

Answer 7

1. IEEE 802.15.4
2. BLE (Bluetooth Low Energy)

Question 8

Use Cases in each protocols?

Answer 8

1. MQTT:
   
   • Bi-directional communication
   • Sensor data collection, device control, real-time monitoring
2. CoAP:
   
   • Smart homes, industrial automation, and environmental monitoring
3. UDP:
   
   • Low latency, real time communication
   • Video surveillance, VoIP, and gaming
4. TCP:
   
   • Reliable, ordered data delivery
   • Firmware updates, file transfer and remote monitoring