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NEW QUESTION # 54
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:
Reference:
https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-automatic-device-management
NEW QUESTION # 55
You plan to deploy Azure Time Series Insights.
What should you create on iothub1 before you deploy Time Series Insights?
- A. an IP filter rule
- B. a new consumer group
- C. a new shared access policy
- D. a new message route
Answer: B
Explanation:
Create a dedicated consumer group in the IoT hub for the Time Series Insights environment to consume from.
Each Time Series Insights event source must have its own dedicated consumer group that isn't shared with any other consumer. If multiple readers consume events from the same consumer group, all readers are likely to exhibit failures.
Reference:
https://docs.microsoft.com/en-us/azure/time-series-insights/time-series-insights-how-to-add-an-event-source- iothub
NEW QUESTION # 56
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.
Reference:
https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-devguide-c2d-guidance
NEW QUESTION # 57
You have four physical loT devices that connect to an Azure loT hub named iothub1. The devices are configured as 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:
Explanation
NEW QUESTION # 58
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.
Reference:
https://docs.microsoft.com/en-us/azure/stream-analytics/stream-analytics-parallelization
NEW QUESTION # 59
You have an Azure IoT solution that includes an Azure IoT hub and 100 Azure IoT Edge devices.
You plan to deploy the IoT Edge devices to external networks. The firewalls of the external networks only allow traffic on port 80 and port 443.
You need to ensure that the devices can connect to the IoT hub. The solution must minimize costs. What should you do?
- A. Configure the devices for extended offline operations.
- B. Configure the upstream protocol of the devices to use MQTT over WebSocket.
- C. Configure the devices to use an HTTPS proxy.
- D. Connect the external networks to the IoT solution by using ExpressRoute.
Answer: B
Explanation:
Explanation
MQTT over WebSockets uses port 443.
Reference:
https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-devguide-protocols
NEW QUESTION # 60
You plan to develop modules for an Azure IoT Edge solution.
You need to recommend a development tool that supports the following:
* Node.js
* Module templates
* Development on Linux workstations
What should you recommend?
- A. Microsoft Visual Studio Code
- B. Microsoft Visual Studio Online
- C. the Azure loT explorer
- D. Microsoft Visual Studio
Answer: B
Explanation:
Explanation
Use Visual Studio Code to develop Node.js code and deploy it to a device running Azure IoT Edge.
You can use IoT Edge modules with Linux containers to deploy code that implements your business logic directly to your IoT Edge devices.
Reference:
https://docs.microsoft.com/en-us/azure/iot-edge/tutorial-node-module?view=iotedge-2020-11
NEW QUESTION # 61
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
- B. Device ID and Asset ID
- C. Device ID. Asset ID, and Temperature
- D. Device ID and Gateway ID
Answer: D
NEW QUESTION # 62
You have an Azure IoT solution that contains an Azure IoT hub.
You need to ensure that the IoT hub configuration is compliant with the Health Insurance Portability and Accountability Act (HIPAA) audit logging requirements.
What should you use?
- A. an Azure Policy definition
- B. Azure Monitor alerts
- C. Azure Advisor recommendations
- D. an Azure Sentinel workspace
Answer: A
Explanation:
Regulatory Compliance in Azure Policy provides Microsoft created and managed initiative definitions, known as built-ins, for the compliance domains and security controls related to different compliance standards, including HIPAA auditing logging.
Reference:
https://docs.microsoft.com/en-us/azure/iot-hub/security-controls-policy
NEW QUESTION # 63
How should you complete the GROUP BY clause to meet the Streaming Analytics requirements?
- A. GROUP BY SessionWindow(Second, 30, 60)
- B. GROUP BY HoppingWindow(Second, 60, 30)
- C. GROUP BY SlidingWindow(Second, 30)
- D. GROUP BY TumblingWindow(Second, 30)
Answer: D
Explanation:
Explanation
Scenario: You plan to use a 30-second period to calculate the average temperature reading of the sensors.
Tumbling window functions are used to segment a data stream into distinct time segments and perform a function against them, such as the example below. The key differentiators of a Tumbling window are that they repeat, do not overlap, and an event cannot belong to more than one tumbling window.
InAnswers:
A: Hopping window functions hop forward in time by a fixed period. It may be easy to think of them as Tumbling windows that can overlap, so events can belong to more than one Hopping window result set.
Reference:
https://docs.microsoft.com/en-us/azure/stream-analytics/stream-analytics-window-functions
NEW QUESTION # 64
You are troubleshooting an Azure IoT hub.
You discover that some telemetry messages are dropped before they reach downstream processing. You suspect that IoT Hub throttling is the root cause.
Which log in the Diagnostics settings of the IoT hub should you use to capture the throttling error events?
- A. C2DCommands
- B. DeviceTelemetry
- C. Connections
- D. Routes
Answer: B
Explanation:
The device telemetry category tracks errors that occur at the IoT hub and are related to the telemetry pipeline. This category includes errors that occur when sending telemetry events (such as throttling) and receiving telemetry events (such as unauthorized reader). This category cannot catch errors caused by code running on the device itself.
Note: The metric d2c.telemetry.ingress.sendThrottle is the number of throttling errors due to device throughput throttles.
Reference:
https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-monitor-resource-health
NEW QUESTION # 65
You deploy an Azure IoT hub.
You need to demonstrate that the IoT hub can receive messages from a 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:
1 - Register a device in IoT Hub
2 - Configure the device connection string on a device client.
3 - Trigger a new send event from a device client.
Reference:
https://docs.microsoft.com/en-us/azure/iot-edge/how-to-register-device
NEW QUESTION # 66
You have 10 IoT devices that connect to an Azure IoT hub named Hub1.
From Azure Cloud Shell, you run az iot hub monitor-events --hub-name Hub1 and receive the following error message: "az iot hub: 'monitor-events' is not in the 'az iot hub' command group. See 'az iot hub
--help'."
You need to ensure that you can run the command successfully. What should you run first?
- A. az iot hub generate-sas-token --hub-name Hub1
- B. az iot hub configuration list --hub-name Hub1
- C. az extension add -name azure-cli-iot-ext
- D. az iot hub monitor-feedback --hub-name Hub1
Answer: C
Explanation:
Explanation
Execute az extension add --name azure-cli-iot-ext once and try again.
In order to read the telemetry from your hub by CLI, you have to enable IoT Extension with the following commands:
Add: az extension add --name azure-cli-iot-ext
Reference:
https://github.com/MicrosoftDocs/azure-docs/issues/20843
NEW QUESTION # 67
You develop a custom Azure IoT Edge module named temperature-module.
You publish temperature-module to a private container registry named mycr.azurecr.io You need to build a deployment manifest for the IoT Edge device that will run temperature-module.
Which three container images should you define in the manifest? Each correct answer presents part of the solution.
NOTE: Each correct selection is worth one point.
mcr.microsoft.com/azureiotedge-simulated-temperature-sensor:1.0
- A. mcr.microsoft.com/azureiotedge-agent:1.0
- B. mcr.microsoft.com/azureiotedge-hub:1.0
- C. mycr.azurecr.io/temperature-module:latest
- D. mcr.microsoft.com/iotedgedev:2.0
Answer: B,C,D
Explanation:
Each IoT Edge device runs at least two modules: $edgeAgent and $edgeHub, which are part of the IoT Edge runtime. IoT Edge device can run multiple additional modules for any number of processes. Use a deployment manifest to tell your device which modules to install and how to configure them to work together.
Reference:
https://docs.microsoft.com/en-us/azure/iot-edge/module-composition
NEW QUESTION # 68
You are building an Azure loT solution that will include an Azure loT hub and will process environmental data for a multi-story building by using Azure Stream Analytics. The loT devices for the solution will provide the following data:
* Temperature
* Building
* Room
* Floor
You need to identify which data formats the loT devices can use to send the data as an array. What should you identify?
- A. XML only
- B. Avro and JSON only
- C. JSON only OC.
- D. Avro, JSON. and XML
- E. Avro only
Answer: C
NEW QUESTION # 69
You have an Azure IoT Edge module named SampleModule that runs on a device named Device1.
You make changes to the code of SampleModule by using Microsoft Visual Studio Code.
You need to push the code to the container registry and then deploy the module to Device1.
Which two actions should you perform from Visual Studio Code? Each correct answer presents part of the solution.
NOTE: Each correct selection is worth one point.
- A. Create a deployment for a single device.
- B. Build and push the SampleModule code to the registry.
- C. Generate a shared access signature (SAS) token for Device 1.
- D. Upload to Azure Storage.
- E. Build an loT Edge solution.
Answer: A,E
Explanation:
D: Once you create IoT Edge modules with your business logic, you want to deploy them to your devices to operate at the edge.
B: Configure a deployment manifest. A deployment manifest is a JSON document that describes which modules to deploy, how data flows between the modules, and desired properties of the module twins.
You deploy modules to your device by applying the deployment manifest that you configured with the module information.
In the Visual Studio Code explorer view, expand the Azure IoT Hub section, and then expand the Devices node.
To confirm that the device you've chosen is an IoT Edge device, select it to expand the list of modules and verify the presence of $edgeHub and $edgeAgent. Every IoT Edge device includes these two modules.
Select Create Deployment for Single Device.
Navigate to the deployment manifest JSON file that you want to use, and click Select Edge Deployment Manifest.
Reference:
https://docs.microsoft.com/en-us/azure/iot-edge/how-to-deploy-modules-vscode
NEW QUESTION # 70
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. From the loT hub. create a security module for the devices.
- B. On the devices, initialize Trusted Platform Module (TPM).
- C. On the devices, set the PowerShell execution policy to Restricted.
- D. From the loT hub. create a system-assigned managed identity.
Answer: A
Explanation:
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
NEW QUESTION # 71
You need to use message enrichment to add additional device information to messages sent from the IoT gateway devices when the reported temperature exceeds a critical threshold.
How should you configure the enrich message values? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.
Answer:
Explanation:
Reference:
https://docs.microsoft.com/bs-cyrl-ba/azure/iot-hub/iot-hub-message-enrichments-overview
Topic 2, ADatum
To start the case study
To display the first question on this case study, click the Next button. Use the buttons in the left pane to explore the content of the case study before you answer the questions. Clicking these buttons displays information such as business requirements, existing environment, and problem statements. If the case study has an All Information tab, note that the information displayed is identical to the information displayed on the subsequent tabs. When you are ready to answer a question, click the Question button to return to the question.
Requirements. Planned Changes
ADatum is developing an Azure IoT solution to monitor environmental conditions. The IoT solution consists of hardware devices and cloud services. All the devices will communicate directly to Azure IoT Hub.
The hardware devices will be deployed to the branch offices and will collect data about various environmental conditions such as temperature, humidity, air quality, and noise level. The devices will be wired by using Power over Ethernet (PoE) connections.
ADatum is developing the solution in the following three phases: proof of value (POV), pilot, and production.
Requirements. POV Requirements
The POV phase will demonstrate that a technical solution is viable. During this phase, 100 devices will be deployed to the main office and Azure Stream Analytics will be connected to an IoT hub to generate real-time alerts. Stream Analytics will perform the following processing:
Calculate the median rate of the telemetry across the entire devices that exceed the median rate by a factor of 4.
Compare the current telemetry to the specified thresholds and issue alerts when telemetry values are out of range.
Ensure that all message content during this phase is human readable to simplify debugging.
Requirements. Pilot Requirements
During the pilot phase, devices will be deployed to 10 offices. Each office will have up to 1,000 devices.
During this phase, you will add Azure Time Series Insights in parallel to Stream Analytics to support real-time graphs and queries in a dashboard web app.
The pilot deployment must minimize operating costs.
Requirements. Production Requirements
The production phase will include all the offices.
The production deployment will have one IoT hub in each Azure region. Devices must connect to the IoT hub in their region.
The production phase must meet the following requirements:
Ensure that the IoT solution can support performance and scale targets.
Ensure that the IoT solution support up to 1,000 devices per office.
Minimize operating costs of the IoT solution.
Requirements. Technical Requirements
Datum identifies the following requirements for the planned IoT solution:
The solution must generate real-time alerts when a fire condition is detected in an office. All the devices in that office must trigger an audible alarm siren within 10 seconds of the alert.
A dashboard UI must display alerts and the system status in real time and must allow device operators to make adjustments to the system.
Each device will send hourly updates to IoT Hub. Condition alerts will be sent immediately.
Multiple types of devices will collect telemetry that has different schemas.
IoT Hub must perform message routing based on the message body.
Direct methods must be used for cloud-to-device communication.
Reports must be provided monthly, quarterly, and annually.
Stored data queries must be as efficient as possible.
The device message size will be under 4 KB.
Development effort must be minimized.
Requirements. Throttle and Quotas
The relevant throttles and quotas for various IoT Hub tiers are shown in the following table.
Requirements. IoT Hub Routing
You plan to implement IoT Hub routing during the POV phase as shown in the following exhibit.
NEW QUESTION # 72
What should you do to identify the cause of the connectivity issues?
- A. Enable the collection of the Connections diagnostics logs and set up alerts for the connected devices count metric.
- B. Send cloud-to-device messages to the IoT devices.
- C. Use the heartbeat pattern to send messages from the IoT devices to iothub1.
- D. Monitor the connection status of the device twin by using an Azure function.
Answer: A
Explanation:
Scenario: You discover connectivity issues between the IoT gateway devices and iothub1, which cause IoT devices to lose connectivity and messages.
To log device connection events and errors, turn on diagnostics for IoT Hub. We recommend turning on these logs as early as possible, because if diagnostic logs aren't enabled, when device disconnects occur, you won't have any information to troubleshoot the problem with.
Step 1:
1. Sign in to the Azure portal.
2. Browse to your IoT hub.
3. Select Diagnostics settings.
4. Select Turn on diagnostics.
5. Enable Connections logs to be collected.
6. For easier analysis, turn on Send to Log Analytics (see pricing).
Step 2:
Set up alerts for device disconnect at scale
To get alerts when devices disconnect, configure alerts on the Connected devices (preview) metric.
Reference:
https://docs.microsoft.com/bs-cyrl-ba/azure/iot-hub/iot-hub-troubleshoot-connectivity Provision and manage devices Question Set 2
NEW QUESTION # 73
You have an Azure IoT solution that includes several Azure IoT hubs.
A new alerting feature was recently added to the IoT devices. The feature uses a new device twin reported property named alertCondition.
You need to send alerts to an Azure Service Bus queue named MessageAlerts. The alerts must include alertConditionand the name of the IoT hub.
Which two actions should you perform? Each correct answer presents part of the solution.
NOTE: Each correct selection is worth one point.
- A. Add the following message enrichments:
Name = iotHubName
Value = $iothubname
Endpoint = MessageAlerts - B. Create an IoT Hub routing rule that has a data source of Device Twin Change Events and select the endpoint for MessageAlerts.
- C. Create an IoT Hub routing rule that has a data source of Device Telemetry Messages and select the endpoint for MessageAlerts.
- D. Configure File upload for each IoT hub. Configure the device to send a file to an Azure Storage container that contains the device name and status message.
- E. Add the following message enrichments:
Name = iotHubName
Value = $twin.tag.location
Endpoint = MessageAlerts
Answer: A,B
Explanation:
C: Device twins change notifications allow back end applications to be notified in real-time of twin changes and react as business logic requires. For instance, when building an application that notifies an operator directly that a device has a firmware update pending and is "ready to update". This is accomplished by creating a routing rule from the "Twin Change Events" source and filtering all events that involve the software update status.
D: Applying enrichments
The messages can come from any data source supported by IoT Hub message routing, including the following examples:
* -->device twin change notifications -- changes in the device twin
* device telemetry, such as temperature or pressure
* device life-cycle events, such as when the device is created or deleted Reference:
https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-message-enrichments-overview
https://azure.microsoft.com/en-us/blog/enhancements-to-azure-iot-hub-improve-management-of-the-full- device-lifecycle/
NEW QUESTION # 74
You have an Azure IoT solution that contains the Azure IoT Edge devices shown in the following table.
You have the standard deployments and target conditions shown in the following table.
You have the modules 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:
Explanation
NEW QUESTION # 75
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