Download Microsoft AZ-220 Sample Questions [Aug-2022]
Real AZ-220 Exam Questions and Answers FREE
Microsoft AZ-220 Exam Syllabus Topics:
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NEW QUESTION 73
You create an Azure Stream Analytics job that has the following query.
The job is configured to have an Azure IoT Hub input and an output to an Azure function.
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:
Reference:
https://docs.microsoft.com/en-us/stream-analytics-query/time-management-azure-stream-analytics
NEW QUESTION 74
You have an existing Azure IoT hub.
You need to connect physical IoT devices to the IoT hub.
You are connecting the devices through a firewall that allows only port 443 and port 80.
Which three communication protocols can you use? Each correct answer presents a complete solution.
NOTE: Each correct selection is worth one point.
- A. HTTPS
- B. AMQP over WebSocket
- C. AMQP
- D. MQTT
- E. MQTT over WebSocket
Answer: A,B,E
Explanation:
MQTT over WebSockets, AMQP over WebSocket, and HTTPS use port 443.
Reference:
https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-devguide-protocols
NEW QUESTION 75
You have an Azure subscription that contains an Azure IoT hub, an Azure IoT Edge gateway, and 1,000 leaf devices. The leaf devices use a custom communication protocol that is NOT supported by the IoT hub.
You need to configure the gateway to meet the following requirements:
Minimize the number of connections between the gateway and the IoT hub.
Support addressing cloud-to-device messages to individual leaf devices.
How should you configure the gateway? 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-edge/iot-edge-as-gateway
NEW 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 question, 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. No
- B. Yes
Answer: B
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 77
You have an Azure Stream Analytics job that connects to an Azure IoT hub named Hub1445 as a streaming data source. Hub1445 is configured as shown in the exhibit. (Click the Exhibit tab.)
The Stream Analytics job fails to receive any messages from the IoT hub. What should you do to resolve the issue?
- A. Enable the Route3 route.
- B. Disable the Route2 route.
- C. Enable the fallback route.
- D. Change the Route1 route query to true.
Answer: D
Explanation:
Explanation
The device telemetry is usually passed as JSON from the device through the IoT Hub - this is handled nicely by Azure Streaming Analytics queries.
The IoT Hub message routing should be configured as follows: Data source: Device Telemetry Messages Routing query: true (as the routing query is an expression that evaluates to true or false for each received message, the simplest way to send all messages to the endpoint is to just supply true as the query).
Reference:
https://darenmay.com/blog/azure-iot-streaming-analytics-data-lake-analytics-and-json/
NEW QUESTION 78
You need to visualize Azure IoT Hub telemetry data by using Microsoft Power BI.
Which service should you connect to the IoT hub?
- A. Azure Stream Analytics
- B. Azure Event Grid
- C. Azure Notification Hubs
- D. SendGrid
Answer: A
Explanation:
Explanation
You can use Microsoft Power BI to visualize real-time sensor data that your Azure IoT hub receives. To do so, you configure an Azure Stream Analytics job to consume the data from IoT Hub and route it to a dataset in Power BI.
Reference:
https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-live-data-visualization-in-power-bi
NEW QUESTION 79
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. Azure IoT Central application and a template for the retail industry
- C. an Azure IoT Edge gateway configured as a protocol translation gateway
- D. an Azure function, an IoT Hub device SDK, and a timer trigger
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.
Reference:
https://docs.microsoft.com/en-us/azure/iot-accelerators/about-iot-accelerators
NEW QUESTION 80
You have an Azure IoT solution that includes an Azure IoT hub, 100 Azure IoT Edge devices, and 500 leaf devices.
You need to perform a key rotation across the devices.
Which three types of entities should you update? Each correct answer presents part of the solution.
NOTE: Each correct selection is worth one point.
- A. the $edgeAgent module identity
- B. the leaf device identities
- C. the leaf module identities
- D. the IoT Edge device identities
- E. the $edgeHub module identity
- F. the iothubowner policy credentials
Answer: B,D,E
Explanation:
To get authorization to connect to IoT Hub, devices and services must send security tokens signed with either a shared access or symmetric key. These keys are stored with a device identity in the identity registry.
An IoT Hub identity registry can be accessed like a dictionary, by using the deviceId or moduleId as the key.
Reference:
https://docs.microsoft.com/bs-latn-ba/azure/iot-dps/how-to-control-access
https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-devguide-identity-registry
NEW QUESTION 81
You have an existing Azure IoT hub.
You use IoT Hub jobs to schedule long running tasks on connected devices.
Which three operations do the IoT Hub jobs support directly? Each correct answer presents a complete solution.
NOTE: Each correct selection is worth one point.
- A. Disable IoT device registry entries.
- B. Update desired properties.
- C. Invoke direct methods.
- D. Update tags.
- E. Send cloud-to-device messages.
- F. Trigger Azure functions.
Answer: B,C,D
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 82
You need to store the real-time alerts generated by Stream Analytics to meet the technical requirements.
Which type of Stream Analytics output should you configure?
- A. Microsoft Power BI
- B. Azure SQL Database
- C. Azure Cosmos DB
- D. Azure Blob storage
Answer: D
Explanation:
When you create a Time Series Insights Preview pay-as-you-go (PAYG) SKU environment, you create two Azure resources:
An Azure Storage general-purpose V1 blob account for cold data storage.
An Azure Time Series Insights Preview environment that can be configured for warm data storage.
Reference:
https://docs.microsoft.com/en-us/azure/time-series-insights/time-series-insights-update-storage-ingress
NEW QUESTION 83
You have an Azure IoT Edge device.
You need to modify the credentials used to access the container registry. What should you modify?
- A. the IoT Edge module
- B. the @edgeHub module twin
- C. the $edgeAgent module twin
- D. the Azure IoT Hub device twin
Answer: C
Explanation:
Explanation
The module twin for the IoT Edge agent is called $edgeAgent and coordinates the communications between the IoT Edge agent running on a device and IoT Hub. The desired properties are set when applying a deployment manifest on a specific device as part of a single-device or at-scale deployment.
These properties include: runtime.settings.registryCredentials.{registryId}.username runtime.settings.registryCredentials.registryId}.password Reference:
https://docs.microsoft.com/en-us/azure/iot-edge/module-edgeagent-edgehub
NEW QUESTION 84
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:
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
Process and manage data
Question Set 3
NEW QUESTION 85
You have an Azure subscription that contains a resource group named RG1.
You need to deploy the Device Provisioning Service. The solution must ensure that the Device Provisioning Service can accept new device enrollments.
You create a Device Provisioning Service instance.
Which two actions should you perform next? Each correct answer presents part of the solution.
NOTE: Each correct selection is worth one point.
- A. From the Manage allocation policy blade of the Device Provisioning Service, configure an allocation policy.
- B. From the Azure portal, create a new Azure IoT hub.
- C. From the Linked IoT hubs blade of the Device Provisioning Service, link an Azure IoT hub.
- D. From the Certificates blade of the Device Provisioning Service, upload an X.509 certificate to the Device Provisioning Service.
Answer: D
Explanation:
A: The Device Provisioning Service can only provision devices to IoT hubs that have been linked to it.
C: Allocation policy. The service-level setting that determines how Device Provisioning Service assigns devices to an IoT hub. There are three supported allocation policies:
* Lowest latency: devices are provisioned to an IoT hub with the lowest latency to the device.
* Evenly weighted distribution
* Static configuration via the enrollment list
Reference:
https://docs.microsoft.com/bs-latn-ba/azure/iot-dps/concepts-service
NEW QUESTION 86
You have an Azure subscription that contains an Azure Time Series Insights environment. The environment has the properties shown in the following table.
You need to create a D.
Which two time series expressions can be correctly used as part of the query? Each correct answer presents a complete solution.
NOTE: Each correct selection is worth one point.
- A. $event['p1'] != NULL
- B. $event.p4.p5 = 0.0
- C. $event.p2 = 'abc'
- D. $event.p1.String = 'abc'
Answer: A,D
Explanation:
Explanation
Example: $event['p1'] != NULL
['p1'] is the only token used. Interpreted as $event['p1'].Double != NULL Reference:
https://docs.microsoft.com/en-us/rest/api/time-series-insights/reference-time-series-expression-syntax
NEW QUESTION 87
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 and an Azure IoT Edge device.
You plan to deploy 10 Bluetooth sensors. The sensors do not support MQTT, AMQP, or HTTPS.
You need to ensure that all the sensors appear in the IoT hub as a single device.
Solution: You configure the IoT Edge device as an IoT Edge transparent gateway. You configure the sensors to connect to the device.
Does this meet the goal?
- A. Yes
- B. No
Answer: B
Explanation:
Explanation
IoT Edge transparent gateways support only the MQTT or AMQP protocols.
Instead use a translation gateway.
IoT Hub. The translation module receives messages from downstream devices, translates them into a supported protocol, and then the IoT Edge device sends the messages on behalf of the downstream devices. All information looks like it is coming from one device, the gateway.
Reference:
https://docs.microsoft.com/en-us/azure/iot-edge/iot-edge-as-gateway
NEW QUESTION 88
How should you complete the GROUP BY clause to meet the Streaming Analytics requirements?
- A. GROUP BY SlidingWindow(Second, 30)
- B. GROUP BY HoppingWindow(Second, 60, 30)
- C. GROUP BY SessionWindow(Second, 30, 60)
- D. GROUP BY TumblingWindow(Second, 30)
Answer: D
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
Topic 1, Contoso
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.
Existing Environment. Current State of Development
Contoso produces a set of Bluetooth sensors that read the temperature and humidity. The sensors connect to IoT gateway devices that relay the data.
All the IoT gateway devices connect to an Azure IoT hub named iothub1.
Existing Environment. Device Twin
You plan to implement device twins by using the following JSON sample.
Existing Environment. Azure Stream Analytics
Each room will have between three to five sensors that will generate readings that are sent to a single IoT gateway device. The IoT gateway device will forward all the readings to iothub1 at intervals of between 10 and 60 seconds.
You plan to use a gateway pattern so that each IoT gateway device will have its own IoT Hub device identity.
You draft the following query, which is missing the GROUP BY clause.
SELECT
AVG(temperature),
System.TimeStamp() AS AsaTime
FROM
Iothub
You plan to use a 30-second period to calculate the average temperature reading of the sensors.
You plan to minimize latency between the condition reported by the sensors and the corresponding alert issued by the Stream Analytics job.
Existing Environment. Device Messages
The IoT gateway devices will send messages that contain the following JSON data whenever the temperature exceeds a specified threshold.
The level property will be used to route the messages to an Azure Service Bus queue endpoint named criticalep.
Existing Environment. Issues
You discover connectivity issues between the IoT gateway devices and iothub1, which cause IoT devices to lose connectivity and messages.
Requirements. Planning Changes
Contoso plans to make the following changes:
Use Stream Analytics to process and view data.
Use Azure Time Series Insights to visualize data.
Implement a system to sync device statuses and required settings.
Add extra information to messages by using message enrichment.
Create a notification system to send an alert if a condition exceeds a specified threshold.
Implement a system to identify what causes the intermittent connection issues and lost messages.
Requirements. Technical Requirements
Contoso must meet the following requirements:
Use the built-in functions of IoT Hub whenever possible.
Minimize hardware and software costs whenever possible.
Minimize administrative effort to provision devices at scale.
Implement a system to trace message flow to and from iothub1.
Minimize the amount of custom coding required to implement the planned changes.
Prevent read operations from being negatively affected when you implement additional services.
NEW QUESTION 89
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. Collect the DeviceTelemetry, Connections, and Routes logs.
- B. From the Diagnostics settings of the IoT hub, select Archive to a storage account.
- C. Collect the JobsOperations, DeviceStreams, and FileUploadOperations logs.
- D. From the Diagnostics settings of the IoT hub, select Log Analytic.
- E. Collect all metrics.
Answer: A,D
Explanation:
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.
Reference:
https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-troubleshoot-connectivity
NEW QUESTION 90
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:
Explanation
Reference:
https://docs.microsoft.com/bs-cyrl-ba/azure/iot-hub/iot-hub-message-enrichments-overview
NEW QUESTION 91
You plan to deploy an Azure IoT hub.
The IoT hub must support the following:
* Three Azure IoT Edge devices 2,500 IoT devices
* Each IoT device will spend a 6 KB message every five seconds.
You need to size the IoT hub to support the devices. The solution must minimize costs. What should you choose?
- A. one unit of the B2 tier
- B. one unit of the S1 tier
- C. one unit of the S3 tier
- D. one unit of the B1 tier
Answer: C
Explanation:
Explanation
2500* 6 KB * 12 = 180,000 KB/minute = 180 MB/Minute.
B3, S3 can handle up to 814 MB/minute per unit. Incorrect Answers:
A, C: B1, S1 can only handle up to 1111 KB/minute per unit B: B2, S2 can only handle up to 16 MB/minute per unit.
Reference:
https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-scaling
NEW QUESTION 92
You have an Azure IoT Central solution that includes multiple IoT devices. The devices report temperature, humidity, and pressure.
You need to export the sensor data captured during a 48-hour period as a CSV file.
What should you use in IoT Central?
- A. Devices
- B. Device groups
- C. Jobs
- D. Analytics
Answer: D
Explanation:
Azure IoT Central provides rich analytics capabilities to analyze historical trends and correlate telemetry from your devices. To get started, select Analytics on the left pane.
The analytics user interface has three main components:
Data configuration panel: On the configuration panel, select the device group for which you want to analyze the data. Next, select the telemetry that you want to analyze and select the aggregation method for each telemetry. The Group By control helps to group the data by using device properties as dimensions.
Time control: Use the time control to select the duration for which you want to analyze the data.
Chart control: The chart control visualizes the data as a line chart.
Reference:
https://docs.microsoft.com/en-us/azure/iot-central/core/howto-create-analytics
NEW QUESTION 93
You need to install the Azure IoT Edge runtime on a new device that runs Windows 10 IoT Enterprise.
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:
1 - From Azure IoT Hub, create an IoT Edge Device
2 - Deploy-IoTEdge
3 - Initialize-IoTEdge
4 - Enter the IoT Edge device connection string.
Reference:
https://docs.microsoft.com/en-us/azure/iot-edge/module-composition
NEW QUESTION 94
You have an Azure IoT hub that uses a Device Provisioning Service instance to automate the deployment of Azure IoT Edge devices.
The IoT Edge devices have a Trusted Platform Module (TPM) 2.0 chip.
From the Azure portal, you plan to add an individual enrollment to the Device Provisioning Service that will use the TPM of the IoT Edge devices as the attestation mechanism.
Which detail should you obtain before you can create the enrollment.
- A. the X.509 device certificate and the certificate chain
- B. the primary key of the Device Provisioning Service shared access policy and the global device endpoint
- C. the endorsement key and the registration ID
- D. the scope ID and the Device Provisioning Service endpoint
Answer: C
Explanation:
The TPM simulator's Registration ID and the Endorsement key, are used when you create an individual enrollment for your device.
Reference:
https://docs.microsoft.com/en-us/azure/iot-edge/how-to-auto-provision-simulated-device-linux Implement Edge Question Set 1
NEW QUESTION 95
You need to add Time Series Insights to the solution to meet the pilot requirements.
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: Provision Time Series Insights
Select Provision new IoT Hub to create a new IoT hub.
Step 2: Route telemetry from IoT Hub to a custom event.
Step 3: Add a data access policy to Time Series Insights for the dashboard web app Scenario: 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.
Incorrect Answers:
No need to use an endpoint.
Reference:
https://docs.microsoft.com/en-us/azure/time-series-insights/time-series-insights-update-create-environment
NEW QUESTION 96
......
Exam Domain Details
Simply put, this Microsoft evaluation will check on your knowledge of the succeeding skills:
- Observe, fix issues & optimize IoT solutions
The second last section is all about troubleshooting IoT solutions. Concepts like configuring health monitoring, metrics in IoT Hub, understanding Azure IoT Hub setting diagnostics logs, and conducting performance & testing stress are well explained in this segment.
- Deploying the Edge
Here, learners have a good chance to learn the expert-level expertise related to concepts like IoT Edge device set-up along with automatic deployment.
- Implement the IoT solution infrastructure
The first exam domain tries to impart best-of-breed understanding related to creating and configuration an IoT hub, device twin configuration, device-to-cloud communication, and many others.
- Implement security
Before the test ends, a detailed understanding of device authentication, using x.509 certificates for configuration enrollment, choosing the right authentication type, configuring various attestation mechanisms through DPS, and the TPM endorsement key generating for the device can be gained from such an area.
- Provision and manage devices
Taking care of the device lifecycle management, IoT device management through IoT Hub, handling the Device Provisioning Service (DPS), and building IoT solutions are the topics covered in the second part of AZ-220.
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