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

Lab 1: Build a blockchain network

Question 1: Which of these file types is used for a model file?

• BNA
• JS
• CTO
• ACL

Question 2: 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 3: The default blockchain Perishable Goods Network in Hyperledger Composer includes which participants? Select all that apply.

• Grower
• Exporter
• Shipper
• Importer

Question 4: 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 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

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 sets up a series of GET and POST commands?

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

Question 3: 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

Question 4: 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 5: The Track Asset History flow filters the array to the selected device and time frame.

• True
• False

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

Question 1: Hyperledger Composer REST APIs cannot be used by Node-RED to communicate to the blockchain perishable network.

• True
• False

Question 2: The Particle Electron program is written in which language?

• Java
• C/C++
• Python
• Go

Question 3: 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 4: 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 5: When you export the code for your network from Hyperledger Composer, what type of file is created?

• BNA
• JS
• JSON
• ZIP or TAR

Question 6: 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 7: 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 8: 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 9: 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 10: You use the Google Maps Locator API to triangulate the geographical location of a device.

• True
• False

Conclusion

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