Microsoft Azure Iot Certification Exam Prep Test

61 Questions | Total Attempts: 131

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Microsoft Azure Iot Certification Exam Prep Test

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Questions and Answers
  • 1. 
    You have an Azure IoT solution that includes an Azure IoT hub, a Device Provisioning Service instance, and 1,000 connected IoT devices. All the IoT devices are provisioned automatically by using one enrollment group. You need to temporarily disable the IoT devices from the connecting to the IoT hub. Solution: From the Device Provisioning Service, you disable the enrollment group, and you disable device entries in the identity registry of the IoT hub to which the IoT devices are provisioned. Does the solution meet the goal?
    • A. 

      Yes

    • B. 

      No

  • 2. 
    You have an Azure IoT solution that includes an Azure IoT hub, a Device Provisioning Service instance, and 1,000 connected IoT devices. All the IoT devices are provisioned automatically by using one enrollment group. You need to temporarily disable the IoT devices from the connecting to the IoT hub. Solution: You delete the enrollment group from the Device Provisioning Service. Does the solution meet the goal?
    • A. 

      Yes

    • B. 

      No

  • 3. 
    You have an Azure IoT hub. You plan to deploy 1,000 IoT devices by using automatic device management. The device twin is shown below. You need to con¦gure automatic device management for the deployment. Which target Condition should you use? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point.  
    • A. 

      Properties.desired.wrapDriveType="WM105a"

    • B. 

      Properties.reported.wrapDriveType="WM105a"

    • C. 

      Tag.engine.wrapDriveType="WM105a"

  • 4. 
    You have an Azure IoT hub. You plan to deploy 1,000 IoT devices by using automatic device management. The device twin is shown below. You need to con¦gure automatic device management for the deployment. Which Device Twin Path should you use? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point.  
    • A. 

      Properties.desired.wrapOperating

    • B. 

      Properties.reported.wrapOperating

    • C. 

      Properties.wrapOperating

  • 5. 
    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

  • 6. 
    You plan to deploy an Azure IoT hub. The IoT hub must support the following: ✑ Three Azure IoT Edge devices ✑ 2,500 IoT devices Each IoT device will spend a 6 KB message every five seconds. You need to size the IoT hub to support the devices. The solution must minimize costs. What should you choose?
    • A. 

      One unit of the S1 tier

    • B. 

      One unit of the B2 tier

    • C. 

      One unit of the B1 tier

    • D. 

      One unit of the S3 tier

  • 7. 
    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. 

      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/¦les/notifications.

  • 8. 
    You have an Azure IoT solution that includes an Azure IoT hub, a Device Provisioning Service instance, and 1,000 connected IoT devices. All the IoT devices are provisioned automatically by using one enrollment group. You need to temporarily disable the IoT devices from connecting to the IoT hub. Solution: From the IoT hub, you change the credentials for the shared access policy of the IoT devices. Does the solution meet the goal?
    • A. 

      Yes

    • B. 

      No

  • 9. 
    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

  • 10. 
    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 ¦rewall that allows only port 443 and port 80. Which three communication protocols can you use? Each correct answer presents a complete solution  
    • A. 

      MQTT over WebSocket

    • B. 

      AMQP

    • C. 

      AMQP over WebSocket

    • D. 

      MQTT

    • E. 

      HTTPS

  • 11. 
    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 trafic 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 devices for extended offline operations.

    • 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. 

      Configure the devices to use an HTTPS proxy.

  • 12. 
    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 con¦gure the GPS location for the device entry. The solution must prevent the changes from being propagated to the physical device. Solution: You use an Azure policy to apply tags to a resource group. Does the solution meet the goal?
    • A. 

      Yes

    • B. 

      No

  • 13. 
    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 con¦gure the GPS location for the device entry. The solution must prevent the changes from being propagated to the physical device. Solution: Solution: You add tags to the device twin. Does the solution meet the goal?
    • A. 

      Yes

    • B. 

      No

  • 14. 
    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 con¦gure 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

  • 15. 
    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. 

       Con¦gure device attestation that uses X.509 certi¦cates.

    • B. 

      Implement device certificate rolling

    • C. 

      Disenroll and reenroll Device1

    • D. 

      Configure the re-provisioning policy.

  • 16. 
    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
    • 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, con¦gure an allocation policy.

    • D. 

      From the Certi¦cates blade of the Device Provisioning Service, upload an X.509 certi¦cate to the Device Provisioning Service.

  • 17. 
    You have 10,000 IoT devices that connect to an Azure IoT hub. The devices do not support over-the-air (OTA) updates. You need to decommission 1,000 devices. The solution must prevent connections and autoenrollment for the decommissioned devices. Which two actions should you perform? Each correct answer presents part of the solution.
    • A. 

      Update the connectionState device twin property on all the devices

    • B. 

      Blacklist the X.509 root certi¦cation authority (CA) certi¦cate for the enrollment group.

    • C. 

      Delete the enrollment entry for the devices.

    • D. 

      Remove the identity certi¦cate from the hardware security module (HSM) of the devices.

    • E. 

      Delete the device identity from the device registry of the IoT hub.

  • 18. 
    You have an Azure IoT Central application. You need to connect an IoT device to the application. Which two settings do you require in IoT Central to con¦gure the device? Each correct answer presents part of the solution.
    • A. 

      Group SAS Primary Key

    • B. 

      The IoT hub name

    • C. 

      Scope ID

    • D. 

      Application Name

    • E. 

      Device ID

  • 19. 
    You have an Azure IoT hub. You need to recommend a solution to scale the IoT hub automatically. What should you include in the recommendation?
    • A. 

      Create an SMS alert in IoT Hub for the Total number of messages used metric

    • B. 

      Create an Azure function that retrieves the quota metrics of the IoT hub.

    • C. 

      Configure autoscaling in Azure Monitor.

    • D. 

      Emit custom metrics from the IoT device code and create an Azure Automation runbook alert.

  • 20. 
    You have an Azure IoT hub that uses a Device Provisioning Service instance. You create a new individual device enrollment that uses symmetric key attestation. Which detail from the enrollment is required to auto provision the device by using the Device Provisioning Service?
    • A. 

      The registration ID of the enrollment

    • B. 

      The primary key of the enrollment

    • C. 

      The device identity of the IoT hub

    • D. 

      The hostname of the IoT hub

  • 21. 
    You have an existing Azure IoT hub. You use IoT Hub jobs to schedule long running tasks on connected devices. Which three operations do the IoT Hub jobs support directly? Each correct answer presents a complete solution. NOTE: Each correct selection is worth one point.
    • A. 

      Trigger Azure functions.

    • B. 

      Invoke direct methods.

    • C. 

      Update desired properties.

    • D. 

      Send cloud-to-device messages.

    • E. 

      Disable IoT device registry entries

    • F. 

      Update tags.

  • 22. 
    You have an Azure IoT hub that uses a Device Provisioning Service instance to automate the deployment of Azure IoT Edge devices. The IoT Edge devices have a Trusted Platform Module (TPM) 2.0 chip. From the Azure portal, you plan to add an individual enrollment to the Device Provisioning Service that will use the TPM of the IoT Edge devices as the attestation mechanism. Which detail should you obtain before you can create the enrollment.
    • A. 

      The scope ID and the Device Provisioning Service endpoint

    • B. 

      The primary key of the Device Provisioning Service shared access policy and the global device endpoint

    • C. 

      The X.509 device certi¦cate and the certi¦cate chain

    • D. 

      The endorsement key and the registration ID

  • 23. 
    You develop a custom Azure IoT Edge module named temperature-module. You publish temperature-module to a private container registry named mycr.azurecr.io You need to build a deployment manifest for the IoT Edge device that will run temperature-module. Which three container images should you de¦ne in the manifest? Each correct answer presents part of the solution.
    • A. 

      Mcr.microsoft.com/azureiotedge-simulated-temperature-sensor:1.0

    • B. 

      Mcr.microsoft.com/azureiotedge-simulated-temperature-sensor:1.0

    • C. 

      Mcr.microsoft.com/iotedgedev:2.0

    • D. 

      Mycr.azurecr.io/temperature-module:latest

    • E. 

      Mcr.microsoft.com/azureiotedge-hub:1.0

  • 24. 
    You have an Azure IoT solution that includes an Azure IoT Hub named Hub1 and an Azure IoT Edge device named Edge1. Edge1 connects to Hub1. You need to deploy a temperature module to Edge1.
    • A. 

      From the Azure portal, navigate to Hub1 and select IoT Edge. Select Edge1, and then select Manage Child Devices. From a Bash prompt, run the following command: az iot edge set-modules -device-id Edge1 -hub-name Hub1 -content C:\deploymentMan1.json

    • B. 

      Create an IoT Edge deployment manifest that speci¦es the temperature module and the route to $upstream. From a Bush prompt, run the following command: az iot hub monitor-events-device-id Edge1 -hub-name Hub1

    • C. 

      From the Azure portal, navigate to Hub1 and select IoT Edge. Select Edge1, select Device Twin, and then set the deployment manifest as a desired property. From a Bash prompt, run the following command az iot hub monitor-events-device-id Edge1 -hub-name Hub1

    • D. 

      Create an IoT Edge deployment manifest that speci¦es the temperature module and the route to $upstream. From a Bush prompt, run the following command: az iot edge set-modules -device-id Edge1 -hub-name Hub1 -content C:\deploymentMan1.json

  • 25. 
    Your company is creating a new camera security system that will use Azure IoT Hub. You plan to use an Azure IoT Edge device that will run Ubuntu Server 18.04. You need to con¦gure the IoT Edge 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. Eg. 1 2 3
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