2023 Latest AZ-220 dumps - Instant Download PDF [Q122-Q142]

2023 Latest AZ-220 dumps - Instant Download PDF

Updated Verified AZ-220 Downloadable Printable Exam Dumps

Microsoft AZ-220 certification exam is designed for professionals seeking to validate their skills in developing and implementing solutions on the Microsoft Azure IoT platform. Microsoft Azure IoT Developer certification exam is ideal for individuals who want to demonstrate their proficiency in managing, monitoring, and troubleshooting IoT solutions that leverage Microsoft Azure services and technologies. AZ-220 exam is also a great way to showcase your understanding of IoT security, data analytics, and machine learning concepts in the context of Azure IoT.

Microsoft AZ-220 exam is intended for developers who want to demonstrate their expertise in developing IoT solutions with Azure. AZ-220 exam is suitable for developers who have experience in programming, cloud computing, and IoT. Candidates who pass the exam will earn the Microsoft Certified: Azure IoT Developer Specialty certification, which demonstrates their skills and expertise in developing Azure IoT solutions.

Microsoft AZ-220 exam is designed to test the candidate's knowledge of Azure IoT services and how to implement them in real-world scenarios. AZ-220 exam covers topics such as IoT solution architecture, Azure IoT Hub, Azure IoT Edge, Azure Stream Analytics, and Azure Time Series Insights. AZ-220 exam also tests the candidate's ability to create and deploy IoT solutions using Azure IoT services.

NEW QUESTION # 122
You need to configure Azure IoT Edge module routing to ensure that modules route traffic as shown in the following exhibit.

How should you complete the IoT Edge module routes? To answer, select the appropriate options in the answer area.
NOTE: Each correct selection is worth one point.

Answer:

Explanation:

Explanation
Text, letter Description automatically generated

Box 1: $connectionModuled
Add a route that tells the edge hub to route any message received by the IoT Edge device that was not sent by an IoT Edge module.
Box 2: $upstream
Send messages to $upstream, which passes the messages to the connected IoT Hub.
Reference:
https://docs.microsoft.com/en-us/azure/iot-edge/tutorial-machine-learning-edge-06-custom-modules

NEW QUESTION # 123
You create an Azure loT hub as shown in the following exhibit.

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 # 124
You have the following device twin for the IoT device.

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:
Box1: Yes
Box 2: Yes
Fanspeed 73 is a reported property.
Box 3: No
The deviceID property is read only.
Reference:
https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-devguide-device-twins

NEW QUESTION # 125
You have an Azure IoT solution that includes an Azure IoT hub, a Device Provisioning Service instance, and 1,000 connected IoT devices. The IoT devices are allocated to tour enrollment groups. Each enrollment group is configured to use certificate attestation.
You need to decommission all the devices in a single enrollment group and the enrollment group itself.
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 - Disable the enrollment group
2 - delete each device from the identity registry.
3 - Delete the enrollment group.
Reference:
https://docs.microsoft.com/en-us/azure/iot-dps/how-to-unprovision-devices

NEW QUESTION # 126
You have 20 devices that connect to an Azure IoT hub.
You open Azure Monitor as shown in the exhibit. (Click the Exhibit tab.)

You discover that telemetry is not being received from five IoT devices.
You need to identify the names of the devices that are not generating telemetry and visualize the dat a. What should you do first?

A. Add the Number of throttling errors metric and archive the logs to an Azure storage account.
B. Configure diagnostics for Connections and send the logs to Azure Log Analytics.
C. Configure diagnostics for Routes and stream the logs to Azure Event Hubs.
D. Add the Telemetry messages sent metric and archieve the logs to an Azure Storage account.

Answer: B

Explanation:
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.
Sign in to the Azure portal.
Browse to your IoT hub.
Select Diagnostics settings.
Select Turn on diagnostics.
Enable Connections logs to be collected.
For easier analysis, turn on Send to Log Analytics

Reference:
https://docs.microsoft.com/bs-cyrl-ba/azure/Iot-hub/iot-hub-troubleshoot-connectivity

NEW QUESTION # 127
You have an Azure subscription that contains an Azure IoT hub and two IoT devices named Device1 and Device2.
You plan to deploy an Azure IoT Edge gateway device named Gateway1.
You need to ensure that all device-to-cloud messages and twin change notifications from Device1 and Device2 to the IoT hub are routed by using Gateway1.
What tasks should you perform to configure the devices? 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/how-to-authenticate-downstream-device

NEW QUESTION # 128
You have an Azure loT solution that contains an Azure loT Edge device named Edgel.
Edge! fails to start.
You connect to Edgel and identify the following:
* The loT Edge agent is running.
* The loT Edge agent continually reports the following error "Empty dconfig file."
* No modules have started.
You need to ensure that Edge1 starts successfully. What should you do?

A. Restart the Docker service.
B. Reapply the iotedge config and restart Edge1.
C. Specify a DNS server for the container engine and restart Edge1.
D. Update the /etc/hosts file for the host operating system and restart Edge1.

Answer: B

NEW QUESTION # 129
You need to recommend the format of telemetry messages to meet the POV requirements.
What should you recommend?

A. XML
B. JSON
C. Avro

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

NEW QUESTION # 130
You have an Azure IoT hub that is being taken from prototype to production.
You plan to connect IoT devices to the IoT hub. The devices have hardware security modules (HSMs). You need to use the most secure authentication method between the devices and the IoT hub. Company policy prohibits the use of internally generated certificates.
Which authentication method should you use?

A. a symmetric key
B. an X.509 self-signed certificate
C. An X.509 certificate signed by a root certification authority (CA).
D. a certificate thumbprint

Answer: C

Explanation:
Purchase X.509 certificates from a root certificate authority (CA). This method is recommended for production environments.
The hardware security module, or HSM, is used for secure, hardware-based storage of device secrets, and is the most secure form of secret storage. Both X.509 certificates and SAS tokens can be stored in the HSM Reference:
https://docs.microsoft.com/en-us/azure/iot-dps/concepts-security

NEW QUESTION # 131
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 B1 tier
B. one unit of the S3 tier
C. one unit of the B2 tier
D. one unit of the S1 tier

Answer: B

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 # 132
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.p1.String = 'abc'
C. $event.p2 = 'abc'
D. $event.p4.p5 = 0.0

Answer: A,B

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 # 133
You plan to deploy Azure Time Series Insights.
What should you create on iothub1 before you deploy Time Series Insights?

A. a new consumer group
B. a new message route
C. a new shared access policy
D. an IP filter rule

Answer: A

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 # 134
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 devices that connect to an Azure IoT hub. Each device has a fixed GPS location that includes latitude and longitude.
You discover that a device entry in the identity registry of the IoT hub is missing the GPS location.
You need to configure the GPS location for the device entry. The solution must prevent the changes from being propagated to the physical device.
Solution: You add tags to the device twin. Does the solution meet the goal?

A. No
B. Yes

Answer: A

Explanation:
Instead add the desired properties to the device twin.
Note: Device Twins are used to synchronize state between an IoT solution's cloud service and its devices. Each device's twin exposes a set of desired properties and reported properties. The cloud service populates the desired properties with values it wishes to send to the device. When a device connects it requests and/or subscribes for its desired properties and acts on them.
Reference:
https://azure.microsoft.com/sv-se/blog/deep-dive-into-azure-iot-hub-notifications-and-device-twin/

NEW QUESTION # 135
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. Evenly weighted distribution
B. Static configuration (via enrollment list only)
C. Custom (Use Azure Function)
D. Lowest latency

Answer: B

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 # 136
You have 1,000 devices that connect to an Azure IoT hub.
You are performing a scheduled check of deployed IoT devices. You plan to run the following command from the Azure CLI prompt.
az iot hub query --hub-name hub1 --query-command "SELECT * FROM devices WHERE connectionState =
'Disconnected'"
What does the command return?

A. the device credentials
B. the device twins
C. the Connections logs
D. the Device Disconnected events

Answer: D

Explanation:
Explanation
The IoT Hub publishes the Microsoft.Devices.DeviceDisconnected event type, which is published when a device is disconnected from an IoT hub.
Reference:
https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-event-grid#event-types

NEW QUESTION # 137
You have 100 devices that connect to an Azure IoT hub.
You need to be notified about failed local logins to a subnet of the devices.
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 - Enable Azure Security Center for IoT
2 - Select a device security group
Reference:
https://docs.microsoft.com/bs-latn-ba/azure/asc-for-iot/how-to-security-data-access
https://docs.microsoft.com/en-us/rest/api/securitycenter/devicesecuritygroups/createorupdate

NEW QUESTION # 138
You have an Azure IoT Central application that includes a Device Provisioning Service instance.
You need to connect IoT devices to the application without first registering the devices.
In which order should you perform the actions? To answer, move all actions from the list of actions to the answer area and arrange them in the correct order.

Answer:

Explanation:

1 - Generate device credentials.
2 - Flash unique credentials to the devices.
3 - Connect the devices to IoT Central.
4 - Associate the devices to a template and approve the connections.
5 - Obtain the credential.
Reference:
https://docs.microsoft.com/en-us/azure/iot-central/core/concepts-get-connected

NEW QUESTION # 139
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. No
B. Yes

Answer: A

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 # 140
You have an Azure subscription that contains the resources shown in the following table.

You create a group enrollment in DPS1 and enroll 100 loT devices. Each device is issued a leaf certificate from CAT. You need to deprovision a single loT device from the group enrollment. The solution must not affect the other devices.
Solution: You create a disabled individual enrollment by using the X.509 certificate of the device.
Does this meet the goal?

A. No
B. Yes

Answer: A

NEW QUESTION # 141
HOTSPOT
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.
Hot Area:

Answer:

Explanation:

Explanation/Reference:
https://docs.microsoft.com/bs-cyrl-ba/azure/iot-hub/iot-hub-message-enrichments-overview Process and manage data Testlet 2 Case Study This is a case study. Case studies are not timed separately. You can use as much exam time as you would like to complete each case. However, there may be additional case studies and sections on this exam. You must manage your time to ensure that you are able to complete all questions included on this exam in the time provided.
To answer the questions included in a case study, you will need to reference information that is provided in the case study. Case studies might contain exhibits and other resources that provide more information about the scenario that is described in the case study. Each question is independent of the other question on this case study.
At the end of this case study, a review screen will appear. This screen allows you to review your answers and to make changes before you move to the next sections of the exam. After you begin a new section, you cannot return to this section.
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.