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Microsoft AZ-220 Exam Syllabus Topics:

TopicDetails

Set up the IoT Solution Infrastructure (10-15%)

Create and configure an Azure IoT Hub-create an IoT Hub
-register a device
-configure a device twin
-configure IoT Hub tier and scaling
Build device messaging and communication- build messaging solutions by using SDKs (device and service)
-implement device-to-cloud communication
-implement cloud-to-device communication
-configure file upload for devices
- optimize message size and scaling
- connect to IoT Hub using TLS server certificates
Configure physical IoT devices-recommend an appropriate protocol based on device specifications
-configure device networking, topology, and connectivity

Provision and Manage Devices (15-20%)

Set Up Device Provisioning Service (DPS)-create a Device Provisioning Service
-create a new enrollment in DPS
-link an IoT Hub to the DPS
Manage the device lifecycle-provision a device by using DPS
-deprovision an autoenrollment
-decommission (disenroll) a device
Manage IoT devices by using IoT Hub-manage devices list in the IoT Hub device registry
-modify device twin tags and properties
-configure a set of devices by using IoT Hub Automatic Device Management
-trigger an action on a set of devices by using IoT Hub Jobs and Direct Methods
-implement a device firmware update process by using device management primitives
- configure module identities
Manage IoT devices by using Azure IoT Central- create a custom device template by using Azure IoT Central
-configure rules and actions in Azure IoT Central
- customize the operator view
-add and manage devices from IoT Central
-troubleshoot device connections and data mapping
-create an application based on an app template for an industry vertical
- export a custom application template
-create and manage a new application based on a custom application template
- upgrade and version a device template
- run IoT Central jobs

Implement IoT Edge (15-20%)

Set up an IoT Edge device-create a device identity in IoT Hub
- set up an IoT device for IoT Edge
-select and install container runtime on IoT devices
-implement module access to the host system
- update IoT Edge runtime
- provision IoT Edge devices by using DPS
Deploy an IoT Edge device- create and implement a deployment manifest
-create a deployment for a single IoT Edge device
-create a deployment to target multiple devices
-create a continuous deployment by using Azure DevOps
Develop IoT Edge modules- create and customize an Edge module
-deploy a custom IoT Edge module to an Edge device
-deploy an IoT Edge module from the Azure Marketplace to an Edge device
-publish an IoT Edge module to an Azure Container Registry
- define module configuration
- configure IoT Edge module routing
-configure environment for IoT Edge development; debug Edge modules in development environment
Configure an IoT Edge device- select an appropriate gateway pattern
-deploy an IoT gateway by using IoT Hub and IoT Edge
- configure IoT Edge certificates
- implement and configure offline support (including local storage)

Implement Business Integration (5-10%)

Integrate with upstream and downstream systems- set up input and output connections
-set up IoT Hub routing for triggering workflows
- test data interface integration
- integrate third-party solutions
-configure workflows, including rules and alerts
Develop Azure Digital Twins (ADT) solutions-create ADT models and digital twins
-map IoT device data to ADT models and relationships
-ingest IoT device messages and translate messages to ADT
-configure routes and endpoints to trigger business logic and data processing
- query the ADT graph
- update properties on ADT entities in the graph
- monitor and troubleshoot ADT

Process and manage data (15-20%)

Configure message routing in Azure IoT Hub-implement message enrichment in IoT Hub
- implement routing of IoT device messages to endpoints
-define and test routing queries
- configure IoT Hub as an Event Grid source
-reconfigure the default EventHub endpoint when there are multiple endpoints

Microsoft Azure IoT Developer Sample Questions (Q119-Q124):

NEW QUESTION # 119
You have an Azure IoT hub that uses a Device Provisioning Service instance.
You have 1,000 legacy IoT devices that only support MAC address or serial number identities. The device do NOT have a security feature that can be used to securely identify the device or a hardware security module (HSM).
You plan to deploy the devices to a secure environment.
You need to configure the Device Provisioning Service instance to ensure that all the devices are identified securely before they receive updates.
Which attestation mechanism should you choose?

  • A. symmetric key attestation
  • B. X.509 certificates
  • C. Trusted Platform Module (TPM) 1.2 attestation

Answer: A

Explanation:
Explanation
A common problem with many legacy devices is that they often have an identity that is composed of a single piece of information. This identity information is usually a MAC address or a serial number. Legacy devices may not have a certificate, TPM, or any other security feature that can be used to securely identify the device.
The Device Provisioning Service for IoT hub includes symmetric key attestation. Symmetric key attestation can be used to identify a device based off information like the MAC address or a serial number.
Reference:
https://docs.microsoft.com/bs-latn-ba/azure/iot-dps/how-to-legacy-device-symm-key


NEW QUESTION # 120
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 configure automatic device management for the deployment.
Which target Condition and Device Twin Path should you use? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.

Answer:

Explanation:

Explanation:
Box 1: tags.engine.warpDriveType='VM105a'
Use tags to target twins. Before you create a configuration, you must specify which devices or modules you want to affect. Azure IoT Hub identifies devices and using tags in the device twin, and identifies modules using tags in the module twin.
Box 2: properties.desired.warpOperating
The twin path, which is the path to the JSON section within the twin desired properties that will be set.
For example, you could set the twin path to properties.desired.chiller-water and then provide the following JSON content:
{
"temperature": 66,
"pressure": 28
}
Reference:
https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-automatic-device-management


NEW QUESTION # 121
During the POV phase, you connect a device to IoT Hub and start sending telemetry messages.
You need to verify the content of the messages received by IoT Hub during the POV phase.
What should you use?

  • A. Splunk or Grafana
  • B. Azure Monitor or Azure Log Analytics
  • C. the Monitoring settings of loT Hub or a Postman call to the loT Hub REST API
  • D. Microsoft Visual Studio Code that uses the loT Hub Toolkit or Azure CLI that uses the loT Hub extension

Answer: B

Explanation:
Reference:
https://docs.microsoft.com/en-us/azure/iot-hub/tutorial-use-metrics-and-diags


NEW QUESTION # 122
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 question, 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 tags to the device twin. Does the solution meet the goal?

  • A. Yes
  • B. No

Answer: B

Explanation:
Instead add the desired properties to the device twin.
Note: Device Twins are used to synchronize state between an IoT solution's cloud service and its devices. Each device's twin exposes a set of desired properties and reported properties. The cloud service populates the desired properties with values it wishes to send to the device. When a device connects it requests and/or subscribes for its desired properties and acts on them.
Reference:
https://azure.microsoft.com/sv-se/blog/deep-dive-into-azure-iot-hub-notifications-and-device-twin/


NEW QUESTION # 123
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 schedule an IoT Hub job to update the twin tags and you query for job progress.
Does this meet the goal?

  • A. yes
  • B. No

Answer: B

Explanation:
Explanation
Instead update the twin desired property and check the corresponding reported property.
Note: 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.
Reference:
https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-devguide-c2d-guidance


NEW QUESTION # 124
......

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