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Microsoft AZ-220 Exam

Certification Provider: Microsoft
Exam Name: Microsoft Azure IoT Developer
Duration: 120 Minutes
Number of questions in our database: 135
Exam Version: Jan. 21, 2023
AZ-220 Exam Official Topics:
  • Topic 1: Configure Stream Processing/ Implement The Iot Solution Infrastructure Recommend An Appropriate Protocol Based On Device Specifications/ Manage Iot Devices By Using Iot Hub
  • Topic 2: Trigger An Action On A Set Of Devices By Using Iot Hub Jobs And Direct Methods/ Configure Physical Iot Devices
  • Topic 3: Build Messaging Solutions By Using Sdks (Device And Service)/ Provision And Manage Devices
  • Topic 4: Set Up Automatic Device Management Of Iot Devices At Scale/ Modify Device Twin Tags And Properties
  • Topic 5: Configure Device Networking, Topology, And Connectivity/ Build Device Messaging And Communication
  • Topic 6: Manage Allocation Policies By Using Azure Functions/ Implement The Device Provisioning Service (DPS)
  • Topic 7: Build A Solution By Using Iot Central/ Create A Device Provisioning Service/ Create And Configure An Iot Hub
  • Topic 8: Configure Rules And Actions In Azure Iot Central/ Implement Device-To-Cloud Communication
  • Topic 9: Configure Iot Hub Tier And Scaling/ Configure File Upload For Devices
  • Topic 10: Implement Cloud-To-Device Communication/ Decommission (Disenroll) A Device
  • Topic 11: Define A Device Type In Azure Iot Central/ Publish An Iot Edge Module To An Azure Container Registry
  • Topic 12: Provision A Device By Using DPS/ Deprovision An Autoenrollment
  • Topic 13: Set Up And Deploy An Iot Edge Device/ Add And Manage Devices From Iot Central
  • Topic 14: Create A Deployment For Iot Edge Devices/ Install Container Runtime On Iot Devices
  • Topic 15: Select And Deploy An Appropriate Gateway Pattern/ Configure Routing In Azure Iot Hub
  • Topic 16: Configure Routing Of Iot Device Messages To Endpoints/ Manage The Device Lifecycle
  • Topic 17: Monitor, Troubleshoot, And Optimize Iot Solutions/ Create A Device Identity In Iot Hub
  • Topic 18: Define And Implement Deployment Manifest/ Deploy A Single Iot Device To Iot Edge
  • Topic 19: Implement Solutions To Handle Telemetry And Time-Stamped Data/ Create An Azure Time Series Insights (TSI) Environment
  • Topic 20: Validate Device Twin Properties, Tags And Direct Methods/ Implement Module-To-Module Communication
  • Topic 21: Create ASA For Data And Stream Processing Of Iot Data/ Process And Filter Iot Data By Using Azure Functions
  • Topic 22: Implement And Configure Offline Support/ Implement Message Enrichment In Iot Hub Configure Enrollment With Symmetric Keys/ Configure An Iot Solution For Time Series Insights (TSI)
  • Topic 23: Troubleshoot Device Disconnects And Connects/ Implement Azure Security Center (ASC) For Iot
  • Topic 24: Connect The Iot Hub And The Time Series Insights (TSI)/ Query And Visualize Tracing By Using Azure Monitor
  • Topic 25: Verify Device Telemetry Is Received By Iot Hub/ Enable ASC For Iot In Azure Iot Hub
  • Topic 26: Create And Configure An Edge Module/ Deploy A Module To An Edge Device
  • Topic 27: Update Security Daemon And Runtime/ Set Up Diagnostics Logs For Azure Iot Hub/ Create A New Enrollment In DPS
  • Topic 28: Configure Stream Analytics Outputs/ Establish Maintenance Communication/ Troubleshoot Device Communication
  • Topic 29: Define And Test Routing Queries/ Configure Health Monitoring/ Configure An Iot Edge Device

Free Microsoft AZ-220 Exam Actual Questions

The questions for AZ-220 were last updated On Jan. 21, 2023

Question #1

You have IoT devices that connect to an Azure IoT hub.

From IoT Hub, you create an Event subscription to be notified when devices are registered to IoT Hub. You select webhook endpoint as a handler for the Event subscription.

Which two types of Event Grid messages will be received by the webhook? Each correct answer presents a complete solution.

NOTE: Each correct selection is worth one point.

Reveal Solution Hide Solution
Correct Answer: A, C

Microsoft.Devices.DeviceCreated: Published when a device is registered to an IoT hub.

The first thing you want to do is handle Microsoft.EventGrid.SubscriptionValidationEvent events. Every time someone subscribes to an event, Event Grid sends a validation event to the endpoint with a validationCode in the data payload.


https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-event-grid

https://docs.microsoft.com/en-us/azure/event-grid/receive-events

Question #2

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 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: You disconnect the Device Provisioning Service from the IoT hub.

Does this meet the goal?

Reveal Solution Hide Solution
Correct Answer: B

Instead, 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.


https://docs.microsoft.com/bs-latn-ba/azure/iot-dps/how-to-unprovision-devices

Question #3

You have an existing Azure IoT hub.

You use IoT Hub jobs to schedule long running tasks on connected devices.

Which two operations do the IoT Hub jobs support directly? Each correct answer presents a complete solution.

NOTE: Each correct selection is worth one point.

Reveal Solution Hide Solution
Correct Answer: B, C

Consider using jobs when you need to schedule and track progress any of the following activities on a set of devices:

Invoke direct methods

Update desired properties

Update tags


https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-devguide-jobs

Question #4

You have 1,000 IoT devices that connect to an Azure IoT hub.

Each device has a property tag named city that is used to store the location of the device.

You need to update the properties on all the devices located at an office in the city of Seattle as quickly as possible. Any new devices in the Seattle office that are added to the IoT hub must receive the updated properties also.

What should you do?

Reveal Solution Hide Solution
Correct Answer: A

Automatic device management in Azure IoT Hub automates many of the repetitive and complex tasks of managing large device fleets. With automatic device management, you can target a set of devices based on their properties, define a desired configuration, and then let IoT Hub update the devices when they come into scope. This update is done using an automatic device configuration or automatic module configuration, which lets you summarize completion and compliance, handle merging and conflicts, and roll out configurations in a phased approach.


https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-automatic-device-management

Question #5

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 a Standard tier Azure IoT hub and a fleet of IoT devices.

The devices connect to the IoT hub by using either Message Queuing Telemetry Transport (MQTT) or Advanced Message Queuing Protocol (AMQP).

You need to send data to the IoT devices and each device must respond. Each device will require three minutes to process the data and respond.

Solution: You use cloud-to-device messages and watch the cloud-to-device feedback endpoint for successful acknowledgement.

Does this meet the goal?

Reveal Solution Hide Solution
Correct Answer: B

IoT Hub provides three options for device apps to expose functionality to a back-end app:

Twin's desired properties for long-running commands intended to put the device into a certain desired state. For example, set the telemetry send interval to 30 minutes.

Direct methods for communications that require immediate confirmation of the result. Direct methods are often used for interactive control of devices such as turning on a fan.

Cloud-to-device messages for one-way notifications to the device app.


https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-devguide-c2d-guidance


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