Download Microsoft Azure IoT Developer (beta).ExamCollection.AZ-220.2021-06-16.6e.53q.vcex

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Exam Microsoft Azure IoT Developer
Number AZ-220
File Name Microsoft Azure IoT Developer (beta).ExamCollection.AZ-220.2021-06-16.6e.53q.vcex
Size 3.37 Mb
Posted June 16, 2021
Downloads 7

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Demo Questions

Question 1
You plan to deploy a standard tier Azure IoT hub. 
You need to perform an over-the-air (OTA) update on devices that will connect to the IoT hub by using scheduled jobs. 
What should you use?

  • A: a device-to-cloud message
  • B: the device twin reported properties
  • C: a cloud-to-device message
  • D: a direct method



Question 2
You have an IoT device that gathers data in a CSV file named Sensors.csv. 
You deploy an Azure IoT hub that is accessible at ContosoHub.azure-devices.net. 
You need to ensure that Sensors.csv is uploaded to the IoT hub. 
Which two actions should you perform? Each correct answer presents part of the solution. 
NOTE: Each correct selection is worth one point.

  • A: Upload Sensors.csv by using the IoT Hub REST API.
  • B: From the Azure subscription, select the IoT hub, select Message routing, and then configure a route to storage.
  • C: From the Azure subscription, select the IoT hub, select File upload, and then configure a storage container.
  • D: Configure the device to use a GET request to ContosoHub.azure-devices.net/devices/ContosoDevice1/ files/notifications.



Question 3
You deploy an Azure IoT hub. 
You need to demonstrate that the IoT hub can receive messages from a device. 
Which three actions should you perform in sequence? To answer, move the appropriate actions from the 
list of actions to the answer area and arrange them in the correct order. 
 




Question 4
You create an Azure IoT hub by running the following command. 
az iot hub create --resource-group MyResourceGroup --name MyIotHub --sku B1 -- location westus --partition-count 4 
What does MylotHub support?

  • A: Device Provisioning Service
  • B: cloud-to-device messaging
  • C: Azure IoT Edge
  • D: device twins



Question 5
You have an existing Azure IoT hub. 
You need to connect physical IoT devices to the IoT hub. 
You are connecting the devices through a firewall that allows only port 443 and port 80. 
Which three communication protocols can you use? Each correct answer presents a complete solution. 
NOTE: Each correct selection is worth one point.

  • A: MQTT over WebSocket
  • B: AMQP
  • C: AMQP over WebSocket
  • D: MQTT
  • E: HTTPS



Question 6
You have an Azure IoT solution that includes an Azure IoT hub and 100 Azure IoT Edge devices. 
You plan to deploy the IoT Edge devices to external networks. The firewalls of the external networks only allow traffic on port 80 and port 443. 
You need to ensure that the devices can connect to the IoT hub. The solution must minimize costs. 
What should you do?

  • A: Configure the upstream protocol of the devices to use MQTT over TCP.
  • B: Configure the upstream protocol of the devices to use MQTT over WebSocket.
  • C: Connect the external networks to the IoT solution by using ExpressRoute.
  • D: Integrate cellular communication hardware onto the devices and avoid the use of the external networks.



Question 7
You have 100 devices that connect to an Azure IoT hub named Hub1. The devices connect by using a symmetric key.  
You deploy an IoT hub named Hub2.  
You need to migrate 10 devices from Hub1 to Hub2. The solution must ensure that the devices retain the existing symmetric key.  
What should you do?

  • A: Add a desired property to the device twin of Hub2. Update the endpoint of the 10 devices to use Hub2.
  • B: Add a desired property to the device twin of Hub1. Recreate the device identity on Hub2.
  • C: Recreate the device identity on Hub2. Update the endpoint of the 10 devices to use Hub2.
  • D: Disable the 10 devices on Hub1. Update the endpoint of the 10 devices to use Hub2.



Question 8
Note: This question is part of a series of questions that present the same scenario. Each question in the series contains a unique solution that might meet the stated goals. 
Some question sets might have more than one correct solution, while others might not have a correct solution. 
After you answer a question in this section, you will NOT be able to return to it. As a result, these questions will not appear in the review screen. 
You have devices that connect to an Azure IoT hub. Each device has a fixed GPS location that includes latitude and longitude. 
You discover that a device entry in the identity registry of the IoT hub is missing the GPS location. 
You need to configure the GPS location for the device entry. The solution must prevent the changes from being propagated to the physical device. 
Solution: You add the desired properties to the device twin. 
Does the solution meet the goal?

  • A: Yes
  • B: No



Question 9
You have three Azure IoT hubs named Hub1, Hub2, and Hub3, a Device Provisioning Service instance, and an IoT device named Device1. 
Each IoT hub is deployed to a separate Azure region. Device enrollment uses the Lowest latency allocation policy. 
The Device Provisioning Service uses the Lowest latency allocation policy. Device1 is auto-provisioned to Hub1 by using the Device Provisioning Service. 
Device1 regularly moves between regions. You need to ensure that Device1 always connects to the IoT hub that has the lowest latency. 
What should you do?

  • A: Configure device attestation that uses X.509 certificates.
  • B: Implement device certificate rolling.
  • C: Disenroll and reenroll Device1. 
  • D: Configure the re-provisioning policy.



Question 10
You have an Azure subscription that contains a resource group named RG1. 
You need to deploy the Device Provisioning Service. The solution must ensure that the Device Provisioning 
Service can accept new device enrollments. 
You create a Device Provisioning Service instance. 
Which two actions should you perform next? Each correct answer presents part of the solution. 
NOTE: Each correct selection is worth one point.

  • A: From the Linked IoT hubs blade of the Device Provisioning Service, link an Azure IoT hub.
  • B: From the Azure portal, create a new Azure IoT hub.
  • C: From the Manage allocation policy blade of the Device Provisioning Service, configure an allocation policy.
  • D: From the Certificates blade of the Device Provisioning Service, upload an X.509 certificate to the Device Provisioning Service.






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