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To be eligible for the Microsoft AZ-220 Certification Exam, candidates should have a good understanding of Azure services and should be able to design and develop IoT solutions using Azure technologies. They should also have experience in developing and implementing Azure IoT solutions, including data storage, data analysis, and data processing. Additionally, candidates should have a good understanding of IoT device communication protocols, security, and privacy considerations.
Microsoft AZ-220 Exam is ideal for developers, architects, and other IT professionals who are interested in building IoT solutions using Microsoft Azure. It is a comprehensive exam that covers a broad range of topics, including Azure IoT Hub, Azure IoT Edge, Azure Stream Analytics, and Azure Time Series Insights. AZ-220 exam is designed to test your knowledge of Azure IoT services, as well as your ability to implement and manage IoT solutions using Microsoft Azure.
The Microsoft AZ-220 exam covers a wide range of topics, including IoT solution design, data processing, device management, and security. Successful candidates will be able to design and implement IoT solutions using Azure services such as Azure IoT Hub, Azure Stream Analytics, and Azure Functions. They will also be able to manage and monitor devices and data, as well as implement security measures to protect their solutions.
NEW QUESTION # 10
You need to design a module deployment strategy that meets the device requirements. What should you create?
- A. a standard deployment for each type of device
- B. a layered deployment for each type of device
- C. a single layered deployment
- D. a single deployment
Answer: B
NEW QUESTION # 11
You need to recommend the format of telemetry messages to meet the POV requirements.
What should you recommend?
- A. Avro
- B. JSON
- C. XML
Answer: B
Explanation:
Explanation
Scenario: POV Requirements
Ensure that all message content during this phase is human readable to simplify debugging.
Avro uses a binary format, so it is not human readable.
The more lightweight JSON (Javascript object notation) has become a popular alternative to XML for various reasons. A couple obvious ones are:
Less verbose- XML uses more words than necessary
JSON is faster- Parsing XML software is slow and cumbersome.
Reference:
https://blog.cloud-elements.com/json-better-xml
NEW QUESTION # 12
You have an Azure loT solution that contains an Azure IoT hub and the Azure IoT Edge gateways shown in the following table.
You have the leaf devices shown in the following table.
The IoT hub receives the messages shown in the following table.
You plan to a deploy a new Azure Time Series Insight environment.
You need to recommend a Time Series ID property name to ensure that the telemetry of each device will be stored in a separate time series instance.
What should you recommend?
- A. Device ID and Gateway ID
- B. Device ID and Asset ID
- C. Device ID
- D. Device ID. Asset ID, and Temperature
Answer: A
NEW QUESTION # 13
You have an Azure loT hub
You have four Azure 10T Edge devices and. The device twin code shown in the following table.
You have three deployments and the deployment code shown in the following table.
For each of the following statements, select Yes if the statement is true. Otherwise, select No. NOTE: Each correct selection is worth one point.
Answer:
Explanation:
NEW QUESTION # 14
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 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
Answer: A
Explanation:
You may find it necessary to deprovision devices that were previously auto-provisioned through the Device Provisioning Service.
In general, deprovisioning a device involves two steps:
1. Disenroll the device from your provisioning service, to prevent future auto-provisioning. Depending on whether you want to revoke access temporarily or permanently, you may want to either disable or delete an enrollment entry.
2. Deregister the device from your IoT Hub, to prevent future communications and data transfer. Again, you can temporarily disable or permanently delete the device's entry in the identity registry for the IoT Hub where it was provisioned.
Reference:
https://docs.microsoft.com/bs-latn-ba/azure/iot-dps/how-to-unprovision-devices
NEW QUESTION # 15
You have an Azure loT solution that contains a Device Provisioning Service (DPS) instance and 100 loT devices.
You plan to configure firewall rules to ensure that the loT devices only communicate with Azure loT Hub DPS endpoints.
You need to retrieve the current IP address prefixes for the loT Hub DPS endpoints.
What should you query?
- A. Azure service tags
- B. Microsoft Defender for Cloud
- C. Microsoft Azure Active Directory (Azure AD), part of Microsoft Entra
- D. Azure DNS
Answer: A
NEW QUESTION # 16
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?
- A. Yes
- B. No
Answer: B
Explanation:
Explanation
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.
Reference:
https://docs.microsoft.com/bs-latn-ba/azure/iot-dps/how-to-unprovision-devices
NEW QUESTION # 17
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. What should you do?
- 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 specifies 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 specifies 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
Answer: D
Explanation:
\deploymentMan1.json
Explanation:
You deploy modules to your device by applying the deployment manifest that you configured with the module information.
Change directories into the folder where your deployment manifest is saved. If you used one of the VS Code IoT Edge templates, use the deployment.json file in the config folder of your solution directory and not the deployment.template.json file.
Use the following command to apply the configuration to an IoT Edge device:
az iot edge set-modules --device-id [device id] --hub-name [hub name] --content [file path] Reference:
https://docs.microsoft.com/en-us/azure/iot-edge/how-to-deploy-modules-cli
NEW QUESTION # 18
You have an IoT device that has the following configurations:
Hardware: Raspberry Pi Operating system: Raspbian
You need to deploy Azure IoT Edge to the device.
Which two actions should you perform? Each correct answer presents part of the solution.
NOTE: Each correct selection is worth one point.
- A. Run the Deploy-IoTEdge PowerShell cmdlet on the IoT Edge device.
- B. Install the container runtime.
- C. Install the IoT Edge security daemon.
- D. Update the IoT Edge runtime.
Answer: C,D
Explanation:
The Azure IoT Edge runtime is what turns a device into an IoT Edge device. The runtime can be deployed on devices as small as a Raspberry Pi or as large as an industrial server.
The IoT Edge security daemon provides and maintains security standards on the IoT Edge device. The daemon starts on every boot and bootstraps the device by starting the rest of the IoT Edge runtime.
Reference:
https://docs.microsoft.com/en-us/azure/iot-edge/how-to-install-iot-edge
NEW QUESTION # 19
You have an Azure subscription that contains an Azure loT hub named Hubl and an Azure loT Edge device named Devicel.
You need to configure Device1 to operate in extended offline mode and to support modifying the configuration of modules deployed to Device1 while the device is offline.
Solution: From Azure Cloud Shell, you run the following Azure CLI command.
ai lot edge set-nodules --device-id Device1 --hub-nane Hub1 --content deployment.json Does this meet the goal?
- A. Yes
- B. No
Answer: A
NEW QUESTION # 20
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. Configure autoscaling in Azure Monitor.
- B. Create an Azure function that retrieves the quota metrics of the IoT hub.
- C. Emit custom metrics from the IoT device code and create an Azure Automation runbook alert.
- D. Create an SMS alert in IoT Hub for the Total number of messages used metric.
Answer: B
Explanation:
Explanation
Note: IoT Hub is scaled and priced based on an allowed number of messages per day across all devices connected to that IoT Hub. If you exceed the allowed message threshold for your chosen tier and number of units, IoT Hub will begin rejecting new messages. To date, there is no built-in mechanism for automatically scaling an IoT Hub to the next level of capacity if you approach or exceed that threshold.
Reference:
https://docs.microsoft.com/en-us/samples/azure-samples/iot-hub-dotnet-autoscale/iot-hub-dotnet-autoscale/
NEW QUESTION # 21
You are writing code to provision IoT devices by using the Device Provisioning Service.
Which two details from the Overview blade of the Device Provisioning Service are required to provision a new IoT client device? To answer, select the appropriate detail in the answer area.
NOTE: Each correct selection is worth one point.
Answer:
Explanation:
Reference:
https://docs.microsoft.com/en-us/azure/iot-dps/tutorial-set-up-device
NEW QUESTION # 22
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 configure 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.
Answer:
Explanation:
Explanation:
Step 1: Run the following commands
Install the container runtime.
Azure IoT Edge relies on an OCI-compatible container runtime. For production scenarios, we recommended that you use the Moby-based engine provided below. The Moby engine is the only container engine officially supported with Azure IoT Edge. Docker CE/EE container images are compatible with the Moby runtime.
Install the Moby engine.
sudo apt-get install moby-engine
Install the Moby command-line interface (CLI). The CLI is useful for development but optional for production deployments.
sudo apt-get install moby-cli
Install the security daemon. The package is installed at /etc/iotedge/.
sudo apt-get install iotedge
Step 2: From IotHub,create an IoT Edge device registry entry.
Note: In your IoT Hub in the Azure portal, IoT Edge devices are created and managed separately from IOT devices that are not edge enabled.
Sign in to the Azure portal and navigate to your IoT hub.
In the left pane, select IoT Edge from the menu.
Select Add an IoT Edge device.
Provide a descriptive device ID. Use the default settings to auto-generate authentication keys and connect the new device to your hub.
Select Save.
Retrieve the connection string in the Azure portal
1. 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.
2. From the IoT Edge page in the portal, click on the device ID from the list of IoT Edge devices.
3. Copy the value of either Primary Connection String or Secondary Connection String.
Step 3: Add the connection string to..
To manually provision a device, you need to provide it with a device connection string that you can create by registering a new device in your IoT hub.
Open the configuration file.
sudo nano /etc/iotedge/config.yaml
Find the provisioning configurations of the file and uncomment the Manual provisioning configuration section. Update the value of device_connection_string with the connection string from your IoT Edge device.
Save and close the file.
After entering the provisioning information in the configuration file, restart the daemon:
sudosystemctl restart iotedge
Reference:
https://docs.microsoft.com/en-us/azure/iot-edge/how-to-install-iot-edge-linux
NEW QUESTION # 23
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 devices 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:
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 # 24
You have an Azure IoT Edge solution.
You plan to deploy an Azure Security Center for IoT security agent. You need to configure the security agent to meet the following requirements:
* Connection events must be reported as high priority.
* High priority events must be collected every seven minutes.
How should you configure the azureiotsecurity module twin? To answer, drag the appropriate values to the correct locations. Each value 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.
Answer:
Explanation:
Explanation
NEW QUESTION # 25
You are developing an Azure IoT Central application.
You add a new custom device template to the application.
You need to add a fixed location value to the device template. The value must be updated by the physical IoT device, read-only to device operators, and not graphed by IoT Central.
What should you add to the device template?
- A. a Location telemetry
- B. a Location property
- C. a Cloud property
Answer: B
Explanation:
For example, a builder can create a device template for a connected fan that has the following characteristics:
Sends temperature telemetry
Sends location property
Reference:
https://docs.microsoft.com/en-us/azure/iot-central/core/howto-set-up-template
NEW QUESTION # 26
You have an Azure IoT solution that includes multiple Azure IoT hubs in different geographic locations and a single Device Provision Service instance.
You need to configure device enrollment to assign devices to the appropriate IoT hub based on the following requirements:
* The registration ID of the device
* The geographic location of the device
The load between the IoT hubs in the same geographic location must be balanced.
What should you use to assign the devices to the IoT hubs?
- A. Custom (Use Azure Function)
- B. Lowest latency
- C. Static configuration (via enrollment list only)
- D. Evenly weighted distribution
Answer: C
Explanation:
Explanation
Set the Device Provisioning Service allocation policy
The allocation policy is a Device Provisioning Service setting that determines how devices are assigned to an IoT hub. There are three supported allocation policies:
* Lowest latency: Devices are provisioned to an IoT hub based on the hub with the lowest latency to the device.
* Evenly weighted distribution (default): Linked IoT hubs are equally likely to have devices provisioned to them. This is the default setting. If you are provisioning devices to only one IoT hub, you can keep
* this setting.
* Static configuration via the enrollment list: Specification of the desired IoT hub in the enrollment list takes priority over the Device Provisioning Service-level allocation policy.
Reference:
https://docs.microsoft.com/en-us/azure/iot-dps/tutorial-provision-multiple-hubs
NEW QUESTION # 27
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.
Answer:
Explanation:
Explanation:
Box 1: AMQP
Use AMQP on field and cloud gateways to take advantage of connection multiplexing across devices.
Box 2: MQTT
MQTT is used on all devices that do not require to connect multiple devices (each with its own per-device credentials) over the same TLS connection.
Box 3: HTTPS
Use HTTPS for devices that cannot support other protocols.
Reference:
https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-devguide-protocols
NEW QUESTION # 28
You have an Azure IoT solution that includes an Azure IoT hub.
You receive a root certification authority (CA) certificate from the security department at your company.
You need to configure the IoT hub to use the root CA certificate.
Which four 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.
Answer:
Explanation:
Reference:
https://docs.microsoft.com/bs-latn-ba/azure/iot-hub/iot-hub-security-x509-get-started
NEW QUESTION # 29
You have an Azure subscription that contains the following Azure loT hub:
* Name: Hub1
* Tien SI
* Number of units: 14
The subscription has the tiers and unit costs shown in the following table.
You have 60 loT devices that connect to Hub1. Each loT device sends a single 1-KB message to Hub1 per second. For each of the following statements, select Yes if the statement is true. Otherwise, select No.
NOTE: Each correct selection is worth one point.
Answer:
Explanation:
NEW QUESTION # 30
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.
- A. Invoke direct methods.
- B. Trigger Azure functions.
- C. Update desired properties.
- D. Disable IoT device registry entries.
- E. Send cloud-to-device messages.
Answer: A,C
Explanation:
Explanation
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
Reference:
https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-devguide-jobs
NEW QUESTION # 31
You need to configure a gateway for the child devices. The solution must meet the networking requirements. Which gateway pattern should you use?
- A. transparent
- B. identity translation
- C. protocol translation
Answer: A
NEW QUESTION # 32
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. Configure autoscaling in Azure Monitor.
- B. Create an Azure function that retrieves the quota metrics of the IoT hub.
- C. Emit custom metrics from the IoT device code and create an Azure Automation runbook alert.
- D. Create an SMS alert in IoT Hub for the Total number of messages used metric.
Answer: B
Explanation:
Note: IoT Hub is scaled and priced based on an allowed number of messages per day across all devices connected to that IoT Hub. If you exceed the allowed message threshold for your chosen tier and number of units, IoT Hub will begin rejecting new messages. To date, there is no built-in mechanism for automatically scaling an IoT Hub to the next level of capacity if you approach or exceed that threshold.
Reference:
https://docs.microsoft.com/en-us/samples/azure-samples/iot-hub-dotnet-autoscale/iot-hub-dotnet-autoscale/
NEW QUESTION # 33
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