Microsoft Microsoft Certifications AZ-220 Questions & Answers

• Question 161:

  DRAG DROP

  You have an Azure IoT Central application.

  You need to connect IoT devices that use SAS tokens to the application without first registering the devices.

  In which order should you perform the actions? To answer, move all actions from the list of actions to the answer area and arrange them in the correct order.

  Select and Place:

  

  Correct Answer:

  

• Question 162:

  DRAG DROP

  You have an Azure subscription that contains an Azure IoT hub and 100 IoT devices.

  The devices connect to the IoT hub by using the Advanced Message Queuing Protocol (AMQP) protocol and authenticate to the IoT hub by using symmetric keys.

  You need to configure the SASL PLAIN username for the AMQP connection.

  How should you configure the username? To answer, drag the appropriate options to the correct targets. Each option may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view

  content.

  NOTE: Each correct selection is worth one point.

  Select and Place:

  

  Correct Answer:

  

  Box 1: DeviceID

  If you use AMQP claims-based-security, the standard specifies how to transmit these tokens.

  For SASL PLAIN, the username can be:

  {policyName}@sas.root.{iothubName} if using IoT hub-level tokens.

  {deviceId}@sas.{iothubname} if using device-scoped tokens.

  Box 2: sas

  Box 3:IoT hub hame

  Reference:

  https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-dev-guide-sas

• Question 163:

  DRAG DROP

  You have an Azure IoT hub.

  You plan to attach three types of IoT devices as shown in the following table.

  

  You need to select the appropriate communication protocol for each device.

  What should you select? To answer, drag the appropriate protocols to the correct devices. Each protocol may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.

  NOTE: Each correct selection is worth one point.

  Select and Place:

  

  Correct Answer:

  

• Question 164:

  DRAG DROP

  You have an Azure IoT Edge device named Edge1.

  You need to configure the module container to link the module storage to the host storage.

  How should you configure the deployment manifest? To answer, drag the appropriate keys to the correct targets. Each key may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view

  content.

  NOTE: Each correct selection is worth one point.

  Select and Place:

  

  Correct Answer:

  

  Box 1: createOptions

  Every module has a settings property that contains the module image, an address for the container image in a container registry, and any createOptions to configure the image on startup.

  Box 2: portbindings

  Use the PortBindings setting in the HostConfig group of the Docker container create options to map the exposed port in the module to a port on the host device.

  For example, if you exposed port 8080 inside the module and want to map that to port 80 of the host device, the create options in the template.json file would look like the following example:

  "createOptions": { "HostConfig": { "PortBindings": { "8080/tcp": [ { "HostPort": "80" } ] } } }

  Reference: https://docs.microsoft.com/en-us/azure/iot-edge/how-to-use-create-options

• Question 165:

  DRAG DROP

  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.

  Select and Place:

  

  Correct Answer:

  

  Step 1: Register a device in IoT Hub

  Before you can use your IoT devices with Azure IoT Edge, you must register them with your IoT hub. Once a device is registered, you can retrieve a connection string to set up your device for IoT Edge workloads.

  Step 2: Configure the device connection string on a device client. When you're ready to set up your device, you need the connection string that links your physical device with its identity in the IoT hub.

  Step 3: Trigger a new send event from a device client.

• Question 166:

  DRAG DROP

  You have an Azure IoT solution that includes an Azure IoT hub, a Device Provisioning Service instance, and 1,000 connected IoT devices. The IoT devices are allocated to tour enrollment groups. Each enrollment group is configured to use

  certificate attestation.

  You need to decommission all the devices in a single enrollment group and the enrollment group itself.

  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.

  Select and Place:

  

  Correct Answer:

  

  To deprovision all of the devices that have been provisioned through an enrollment group:

  Disable the enrollment group to disallow its signing certificate.

  Use the list of provisioned devices for that enrollment group to disable or delete each device from the identity registry of its respective IoT hub.

  After disabling or deleting all devices from their respective IoT hubs, you can optionally delete the enrollment group. Be aware, though, that, if you delete the enrollment group and there is an enabled enrollment group for a signing certificate

  higher up in the certificate chain of one or more of the devices, those devices can re-enroll.

  Reference:

  https://docs.microsoft.com/en-us/azure/iot-dps/how-to-unprovision-devices