Build an IoT Blockchain Network for a Supply Chain Cognitive Class Exam Answers

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Introduction to Build an IoT Blockchain Network for a Supply Chain

Building an IoT blockchain network for a supply chain involves integrating Internet of Things (IoT) devices with blockchain technology to enhance transparency, traceability, and efficiency throughout the supply chain process. Here’s an introduction to how you can approach this:

Understanding the Components:

1. IoT Devices: These are physical devices embedded with sensors or actuators that collect and transmit data over the internet. In a supply chain context, IoT devices can include sensors for temperature, humidity, location trackers, RFID tags, etc.
2. Blockchain Technology: A distributed ledger technology that ensures secure and transparent transactions. Each transaction (or data update) is recorded in a block and linked in chronological order, forming a chain of blocks (blockchain).

Key Benefits of IoT Blockchain in Supply Chain:

• Transparency: Provides a transparent view of the entire supply chain process, from raw material sourcing to delivery to the end customer.
• Traceability: Enables tracking of goods through each stage of the supply chain, reducing counterfeiting and improving product recall processes.
• Security: Ensures data integrity and security through cryptographic techniques and decentralized consensus mechanisms.

Steps to Build an IoT Blockchain Network:

1. Identify Use Cases: Determine specific use cases where IoT and blockchain can add value, such as tracking perishable goods, ensuring compliance with regulations, or managing inventory.
2. Select Blockchain Platform: Choose a suitable blockchain platform (e.g., Ethereum, Hyperledger Fabric) based on factors like scalability, consensus mechanism, and smart contract capabilities.
3. Integrate IoT Devices: Connect IoT devices to the blockchain network. Ensure devices can securely transmit data to the blockchain and receive commands (if applicable) using appropriate protocols and APIs.
4. Data Collection and Processing: IoT devices collect data (e.g., temperature, location) throughout the supply chain. This data is then processed and validated before being recorded on the blockchain.
5. Smart Contracts: Implement smart contracts to automate processes such as payments, quality control checks, or compliance verification based on predefined rules and conditions.
6. Consensus Mechanism: Define a consensus mechanism appropriate for your supply chain needs (e.g., Proof of Work, Proof of Stake) to validate and add new blocks to the blockchain.
7. User Interface and Analytics: Develop a user interface for stakeholders to access and visualize supply chain data stored on the blockchain. Implement analytics tools to derive insights and improve decision-making.
8. Testing and Deployment: Thoroughly test the IoT devices, blockchain network, and smart contracts in a simulated environment before deployment. Monitor the network post-deployment for performance and security issues.
9. Maintenance and Updates: Regularly maintain and update the IoT devices, blockchain nodes, and smart contracts to ensure optimal performance, security, and compliance with evolving regulations.

Challenges to Consider:

• Scalability: Handling large volumes of IoT data on a blockchain can be challenging.
• Interoperability: Ensuring different IoT devices and blockchain platforms can work together seamlessly.
• Security: Protecting IoT devices from cyber threats and ensuring secure transmission of data to the blockchain.

By integrating IoT devices with blockchain technology, supply chains can achieve greater efficiency, transparency, and trust among stakeholders. This introduction provides a foundational overview to get started on building an IoT blockchain network for a supply chain.

Build an IoT Blockchain Network for a Supply Chain Cognitive Class Certification Answers

Lab 1: Build a Blockchain Network Quiz Answers

Question 1: The default blockchain Perishable Goods Network in Hyperledger Composer includes which participants? Select all that apply.

• Grower
• Exporter
• Shipper
• Importer

Question 2: Which of these file types is used for a model file?

• BNA
• JS
• CTO
• ACL

Question 3: To capture conditions for a crash, a hard jolt, or other incidents based on the accelerometer data, what field did you add to the Contract asset?

• DateTime arrivalDateTime
• Double maxAccel
• AccelReading[] AccelReadings optional
• ShipmentStatus status

Question 4: What is the purpose of this event: TemperatureThresholdEvent()?

• To notify participants when agreed on temperature thresholds are exceeded
• To alert the delivery vehicle driver or owner when temperatures exceed a specific threshold
• To force the temperature sensor on a delivery vehicle to rest
• To notify participants that the contract has been breached

Question 5: In a DevOps pipeline, what occurs during the BUILD phase? Select all that apply.

• Clones your GitHub repository
• Provisions and configures an instance of the blockchain network
• Runs all of the automated unit tests for all of your smart contracts
• Installs any dependencies

Understand the imported Node-RED flows Quiz Answers

Question 1: Which task is not done by the Start Particle Electron flow?

• Sends a command to enable or disable the device geolocation reporting
• Controls the interval of the report
• Queries the temperature blockchain transaction history
• Retrieves accelerometer and current temperature data

Question 2: Which flow takes the arriving data, reformats it, and calls the next flow to write the Particle Electron events to the transaction history of the blockchain network?

• Track Asset History
• Load Blockchain
• Start Particle Electron
• Particle Receiver

Question 3: Which flow sets up a series of GET and POST commands?

• Track Asset History
• Blockchain REST API
• Load Blockchain
• Start Particle Electron

Question 4: The Track Asset History flow filters the array to the selected device and time frame.

• True
• False

Question 5: What is one task that is done by the Load Blockchain flow?

• Sends a command to enable or disable the device geolocation reporting
• Provisions and configures an instance of the blockchain network
• Queries the temperature blockchain transaction history
• Constructs a variety of Node-RED dashboard UI elements

Build an IoT Blockchain Network for a Supply Chain Final Exam Answers

Question 1: What is the purpose of exposing the blockchain network as a REST API?

• To allow appropriate participants in the network to update the blockchain contract
• To allow other developers to access the blockchain network
• To allow the network to run on IBM Cloud
• To manipulate the blockchain from Node-RED

Question 2: What is included in the Internet of Things Platform Starter? Select all that apply.

• CouchDB database
• Node-RED Node.js web server
• Cloudant database
• IoT platform service

Question 3: What is the purpose of the ParticleSSE node in the Particle Receiver flow?

• Sends a command to enable or disable the device geolocation reporting
• Sets up a POST command that writes a temperature event into the blockchain as a transaction
• Allows you subscribe to incoming server-sent events (SSE) on a Particle cloud through a persistent connection
• Queries the temperature blockchain transaction history

Question 4: What is the main task of this flow?

• Queries the temperature blockchain transaction history
• Create a UI dashboard to track assets
• Sends a command to enable or disable the device geolocation reporting
• Connects your Node-RED flow to IBM Cloud

Question 5: Hyperledger Composer REST APIs cannot be used by Node-RED to communicate to the blockchain perishable network.

• True
• False

Question 6: What must you add to the model file for the IoT data to be associated with the asset and shipment?

• IoT variables
• A field for the accelerometer value
• Events that alert the appropriate participants when agreed on thresholds are exceeded
• An updated logic.js file

Question 7: When you export the code for your network from Hyperledger Composer, what type of file is created?

• BNA
• JS
• JSON
• ZIP or TAR

Question 8: You use the Google Maps Locator API to triangulate the geographical location of a device.

• True
• False

Question 9: Using a blockchain network for IoT Asset Tracking is an important blockchain use case because it can be used to record an immutable record of the following attributes. Select all that apply.

• Where the asset was located during its journey
• How long the truck driver took a lunch break
• When was the asset at a particular location
• What environmental conditions (temperature, vibration) the asset was exposed to

Question 10: The Particle Electron program is written in which language?

• Java
• C/C++
• Python
• Go