2021/January Latest Braindump2go AZ-220 Exam Dumps and AZ-220 Exam Questions(Q67-Q87)
QUESTION 67 You have 100 devices that connect to an Azure IoT hub named Hub1. The devices connect by using a symmetric key. You deploy an IoT hub named Hub2. You need to migrate 10 devices from Hub1 to Hub2. The solution must ensure that the devices retain the existing symmetric key. What should you do? A.Add a desired property to the device twin of Hub2. Update the endpoint of the 10 devices to use Hub2. B.Add a desired property to the device twin of Hub1. Recreate the device identity on Hub2. C.Recreate the device identity on Hub2. Update the endpoint of the 10 devices to use Hub2. D.Disable the 10 devices on Hub1. Update the endpoint of the 10 devices to use Hub2. Answer: B Explanation: Desired properties. Used along with reported properties to synchronize device configuration or conditions. The solution back end can set desired properties, and the device app can read them. The device app can also receive notifications of changes in the desired properties. QUESTION 68 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.Trigger Azure functions. B.Invoke direct methods. C.Update desired properties. D.Send cloud-to-device messages. E.Disable IoT device registry entries. Answer: BC 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 QUESTION 69 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? A.From Automatic Device Management, create an IoT device configuration. B.From the IoT hub, generate a query for the target devices. C.Create a scheduled job by using the IoT Hub service SDKs. D.Deploy an Azure IoT Edge transparent gateway to the Seattle office and deploy an Azure Stream Analytics edge job. Answer: A Explanation: 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. QUESTION 70 You have an Azure IoT Central application. You add an IoT device named Oven1 to the application. Oven1 uses an IoT Central template for industrial ovens. You need to send an email to the managers group at your company as soon as the oven temperature falls below 400 degrees. Which two actions should you perform? Each correct answer presents part of the solution. NOTE: Each correct selection is worth one point. A.Create a SendGrid account in the same resource group as the IoT Central application. B.Add a condition that has Time Aggregation set to Off. C.Add a condition that has Aggregation set to Minimum. D.Add the Manager role to the IoT Central application. E.From IoT Central, create a telemetry rule for the template. Answer: BE Explanation: Devices use telemetry to send numerical data from the device. A rule triggers when the selected telemetry crosses a specified threshold. E: To create a telemetry rule, the device template must include at least one telemetry value. The rule monitors the temperature reported by the device and sends an email when it falls below 400 degrees. B: Configure the rule conditions. Conditions define the criteria that the rule monitors. In this tutorial, you configure the rule to fire when the temperature exceeds 70?F. 1. Select Temperature in the Telemetry dropdown. 2. Next, choose Is less than as the Operator and enter 400 as the Value. 3. Optionally, you can set a Time aggregation. When you select a time aggregation, you must also select an aggregation type, such as average or sum from the aggregation drop-down. Without aggregation, the rule triggers for each telemetry data point that meets the condition. With aggregation, the rule triggers if the aggregate value of the telemetry data points in the time window meets the condition. QUESTION 71 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.Static configuration (via enrollment list only) B.Lowest latency C.Evenly weighted distribution D.Custom (Use Azure Function) Answer: A 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. QUESTION 72 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 property B.a Location telemetry C.a Cloud property Answer: A 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 QUESTION 73 You have an Azure IoT hub that uses a Device Provision Service instance. You plan to deploy 100 IoT devices. You need to confirm the identity of the devices by using the Device Provision Service. Which three device attestation mechanisms can you use? Each correct answer presents a complete solution. NOTE: Each correct selection is worth one point. A.X.509 certificates B.Trusted Platform Module (TPM) 2.0 C.Trusted Platform Module (TPM) 1.2 D.Symmetric key E.Device Identity Composition Engine (DICE) Answer: ABD Explanation: The Device Provisioning Service supports the following forms of attestation: F. 509 certificates based on the standard X.509 certificate authentication flow. Trusted Platform Module (TPM) based on a nonce challenge, using the TPM 2.0 standard for keys to present a signed Shared Access Signature (SAS) token. This does not require a physical TPM on the device, but the service expects to attest using the endorsement key per the TPM spec. Symmetric Key based on shared access signature (SAS) Security tokens, which include a hashed signature and an embedded expiration. QUESTION 74 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.Yes B.No Answer: A 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. QUESTION 75 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 direct methods and check the response. Does this meet the goal? A.Yes B.No Answer: B 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. QUESTION 76 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? A.Yes B.No Answer: B 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. QUESTION 77 You are deploying an Azure IoT Edge solution that includes multiple IoT Edge devices. You need to configure module-to-module routing. To which section of the deployment manifest should you add the routes? A.storeAndForwardConfiguration B.$edgeHub C.modules D.systemModules Answer: B Explanation: Routes are declared in the $edgeHub desired properties. QUESTION 78 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.Update the IoT Edge runtime. B.Install the IoT Edge security daemon. C.Run the Deploy-IoTEdge PowerShell cmdlet on the IoT Edge device. D.Install the container runtime. Answer: AB 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. QUESTION 79 You have an Azure IoT hub. You plan to implement IoT Hub events by using Azure Event Grid. You need to send an email when the following events occur: - Device Created - Device Deleted - Device Connected - Device Disconnected Which two actions should you perform? Each correct answer presents part of the solution. NOTE: Each correct selection is worth one point. A.From the IoT hub, configure an event subscription that has API management as the Endpoint Type. B.From the IoT hub, configure an event subscription that has Web Hook as the Endpoint Type. C.Create an Azure logic app that has a Request trigger. D.From the IoT hub, configure an event subscription that has Service Bus Queue as the Endpoint Type. Answer: BC Explanation: For non-telemetry events like DeviceConnected, DeviceDisconnected, DeviceCreated and DeviceDeleted, the Event Grid filtering can be used when creating the subscription. C: Azure Event Grid enables you to react to events in IoT Hub by triggering actions in your downstream business applications. A trigger, such as a Request trigger, is a specific event that starts your logic app. QUESTION 80 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 Stream Analytics job that receives input from an Azure IoT hub and sends the outputs to Azure Blob storage. The job has compatibility level 1.1 and six streaming units. You have the following query for the job. You plan to increase the streaming unit count to 12. You need to optimize the job to take advantage of the additional streaming units and increase the throughput. Solution: You change the query to the following. Does this meet the goal? A.Yes B.No Answer: A Explanation: Max number of Streaming Units with one step and with no partitions is 6. QUESTION 81 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 Stream Analytics job that receives input from an Azure IoT hub and sends the outputs to Azure Blob storage. The job has compatibility level 1.1 and six streaming units. You have the following query for the job. You plan to increase the streaming unit count to 12. You need to optimize the job to take advantage of the additional streaming units and increase the throughput. Solution: You change the query to the following. Does this meet the goal? A.Yes B.No Answer: B Explanation: Max number of Streaming Units with one step and with no partitions is 6. QUESTION 82 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 Stream Analytics job that receives input from an Azure IoT hub and sends the outputs to Azure Blob storage. The job has compatibility level 1.1 and six streaming units. You have the following query for the job. You plan to increase the streaming unit count to 12. You need to optimize the job to take advantage of the additional streaming units and increase the throughput. Solution: You change the compatibility level of the job to 1.2. Does this meet the goal? A.Yes B.No Answer: B Explanation: Max number of Streaming Units with one step and with no partitions is 6. QUESTION 83 You have an Azure IoT solution that includes a basic tier Azure IoT hub named Hub1 and a Raspberry Pi device named Device1. Device1 connects to Hub1. You back up Device1 and restore the backup to a new Raspberry Pi device. When you start the new Raspberry Pi device, you receive the following error message in the diagnostic logs of Hub1: "409002 LinkCreationConflict." You need to ensure that Device1 and the new Raspberry Pi device can run simultaneously without error. Which two actions should you perform? Each correct answer presents part of the solution. NOTE: Each correct selection is worth one point. A.On the new Raspberry Pi device, modify the connection string. B.From Hub1, modify the device shared access policy. C.Upgrade Hub1 to the standard tier. D.From Hub1, create a new consumer group. E.From Hub1, create a new IoT device. Answer: AE Explanation: Note: Symptoms You see the error 409002 LinkCreationConflict in logs along with device disconnection or cloud-to-device message failure. Cause Generally, this error happens when IoT Hub detects a client has more than one connection. In fact, when a new connection request arrives for a device with an existing connection, IoT Hub closes the existing connection with this error. QUESTION 84 You have 1,000 devices that connect to an Azure IoT hub. You discover that some of the devices fail to send data to the IoT hub. You need to ensure that you can use Azure Monitor to troubleshoot the device connectivity issues. Which two actions should you perform? Each correct answer presents part of the solution. NOTE: Each correct selection is worth one point. A.From the Diagnostics settings of the IoT hub, select Archive to a storage account. B.Collect the DeviceTelemetry, Connections, and Routes logs. C.Collect all metrics. D.From the Diagnostics settings of the IoT hub, select Send to Log Analytic. E.Collect the JobsOperations, DeviceStreams, and FileUploadOperations logs. Answer: BD Explanation: The IoT Hub resource logs connections category emits operations and errors having to do with device connections. The following screenshot shows a diagnostic setting to route these logs to a Log Analytics workspace: Note: Azure Monitor: Route connection events to logs: IoT hub continuously emits resource logs for several categories of operations. To collect this log data, though, you need to create a diagnostic setting to route it to a destination where it can be analyzed or archived. One such destination is Azure Monitor Logs via a Log Analytics workspace, where you can analyze the data using Kusto queries. QUESTION 85 You have an Azure IoT solution that includes an Azure IoT hub. You plan to deploy 10,000 IoT devices. You need to validate the performance of the IoT solution while 10,000 concurrently connected devices stream telemetry. The solution must minimize effort. What should you deploy? A.an Azure IoT Device Simulation from Azure IoT Solution Accelerator B.an Azure function, an IoT Hub device SDK, and a timer trigger C.Azure IoT Central application and a template for the retail industry D.an Azure IoT Edge gateway configured as a protocol translation gateway Answer: A Explanation: The IoT solution accelerators are complete, ready-to-deploy IoT solutions that implement common IoT scenarios. The scenarios include connected factory and device simulation. Use the Device Simulation solution accelerator to run simulated devices that generate realistic telemetry. You can use this solution accelerator to test the behavior of the other solution accelerators or to test your own custom IoT solutions. QUESTION 86 You have an Azure IoT Central application that monitors 100 IoT devices. You need to generate alerts when the temperature of a device exceeds 100 degrees. The solution must meet the following requirements: - Minimize costs - Minimize deployment time What should you do? A.Perform a data export to Azure Service Bus. B.Create an email property in the device templates. C.Perform a data export to Azure Blob storage and create an Azure function. D.Create a rule that uses an email action. Answer: D Explanation: You can create rules in IoT Central that trigger actions, such as sending an email, in response to telemetry-based conditions, such as device temperature exceeding a threshold. QUESTION 87 You have an Azure IoT hub that has a hostname of contoso-hub.azure-devices.net and an MCU-based IoT device named Device1. Device1 does NOT support Azure IoT SDKs. You plan to connect Device1 to the IoT hub by using the Message Queuing Telemetry Transport (MQTT) protocol and to authenticate by using X.509 certificates. You need to ensure that Device1 can authenticate to the IoT hub. What should you do? A.Create an Azure key vault and enable the encryption of data at rest for the IoT hub by using a customer-managed key. B.Enable a hardware security module (HSM) on Device1. C.From the Azure portal, create an IoT Hub Device Provisioning Service (DPS) instance and add a certificate enrollment for Device1. D.Add the DigiCert Baltimore Root Certificate to Device1. Answer: D Explanation: The connection to Azure IoT Hub with MQTT is secured using TLS. The Azure IoT Hub library requires the provisioning of the following certificates and a private key for a successful TLS connection: 1. Baltimore CyberTrust Root certificate - Server certificate, used to verify the server's certificate while connecting. 2. Device certificate - generated by the procedures described in Creating Azure IoT Hub certificates , used by Azure IoT Hub to authenticate the device. 3. Private key of the device. 2021 Latest Braindump2go AZ-220 PDF and AZ-220 VCE Dumps Free Share: https://drive.google.com/drive/folders/1jA7Hj8QwEz7KW45_URwtfmp3p_BIw_Vi?usp=sharing
