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AZ-220模擬解説集、AZ-220日本語版と英語版
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Microsoft Azure IoT Developer 認定 AZ-220 試験問題 (Q91-Q96):
質問 # 91
You have an Azure IoT solution.
You need to test that the solution remains functional if IoT Hub is affected by a regional outage.
What should you do?
- A. From the Device Provisioning Service (DPS), unlink the loT hub.
- B. From the loT hub, set Allow public network access to Disabled.
- C. From the loT hub, select Disable fallback route.
- D. From the loT hub, start a manual failover.
正解：D
解説：
Explanation
Manual failover is a feature of the IoT Hub service that allows customers to failover their hub's operations from a primary region to the corresponding Azure geo-paired region. Manual failover can be done in the event of a regional disaster or an extended service outage. You can also perform a planned failover to test your disaster recovery capabilities, although we recommend using a test IoT hub rather than one running in production.
Reference:
https://docs.microsoft.com/en-us/azure/iot-hub/tutorial-manual-failover
質問 # 92
You have an Azure IoT hub named Hub1 and a root certification authority (CA) named CA1. Hub1 is configured to use X.509 certificate device authentication.
You and a custom manufacturing partner complete a proof of possession flow.
You plan to deploy IoT devices manufactured by the custom manufacturing partner. Each device will have a certificate generated by an intermediate C You need to ensure that the custom devices can connect successfully to Hub1.
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.
正解：
解説：
1 - Sign the intermediate CA certificate by using the CA1 certificate.
2 - Sign the device certificate by using the intermediate CA
3 - Deploy the certificate chain to the device.
Reference:
https://docs.microsoft.com/en-us/azure/iot-dps/concepts-x509-attestation
質問 # 93
You need to install the Azure IoT Edge runtime on a new device that runs Windows 10 IoT Enterprise.
In which order should you perform the actions? To answer, move the appropriate actions from the list of actions to the answer area and arrange them in the correct order.
正解：
解説：
Explanation:
Step 1: From Azure IoT hub, create an IoT Edge device
In the Azure Cloud Shell, enter the following command to create a device named myEdgeDevice in your hub.
az iot hub device-identity create --device-id myEdgeDevice --edge-enabled --hub-name {hub_name} View the connection string for your device, which links your physical device with its identity in IoT Hub. Copy the value of the connectionString key from the JSON output and save it. This value is the device connection string. You'll use this connection string to configure the IoT Edge runtime in the step 3.
Step 2: From an elevated PowerShell prompt, run the Deploy-IoTEdge cmdlet.
Install the Azure IoT Edge runtime on your IoT Edge device.
Run PowerShell as an administrator.
Run the Deploy-IoTEdge command, which performs the following tasks:
- Checks that your Windows machine is on a supported version.
- Turns on the containers feature.
- Downloads the moby engine and the IoT Edge runtime.
Step 3: From an elevated PowerShell prompt, run the Initialize-IoTEdge cmdlet Step 4: Enter the IoT Edge device connection string.
Configure the IoT Edge device with a device connection string.
Reference:
https://docs.microsoft.com/en-us/azure/iot-edge/quickstart
質問 # 94
You have an Azure IoT solution that contains an Azure IoT hub and 100 IoT devices. The devices run Windows Server 2016.
You need to deploy the Azure Defender for IoT C#-based security agent to the devices.
What should you do first?
- A. On the devices, initialize Trusted Platform Module (TPM).
- B. From the loT hub. create a system-assigned managed identity.
- C. From the loT hub. create a security module for the devices.
- D. On the devices, set the PowerShell execution policy to Restricted.
正解：C
解説：
Explanation
The IoT Edge security manager provides a safe framework for security service extensions through host-level modules. The IoT Edge security manager include
* Ensure safe operation of client agents for services including Device Update for IoT Hub and Azure Defender for IoT.
Reference:
https://docs.microsoft.com/en-us/azure/iot-edge/iot-edge-security-manager
質問 # 95
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 update the twin desired property and check the corresponding reported property.
Does this meet the goal?
- A. No
- B. Yes
正解：B
解説：
Explanation
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
質問 # 96
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AZ-220模擬解説集: https://www.goshiken.com/Microsoft/AZ-220-mondaishu.html
