Microsoft AZ-220 Exam Practice Test Instant Access

Question 1

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.

ATrigger Azure functions.

BInvoke direct methods.

CUpdate desired properties.

DSend cloud-to-device messages.

EDisable IoT device registry entries.

FUpdate tags.

Answer : B, C

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

https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-devguide-jobs

Question 2

You have an Azure subscription that contains an Azure loT hub named Hubl and an Azure loT Edge device named Devicel.

You need to configure Device1 to operate in extended offline mode and to support modifying the configuration of modules deployed to Device1 while the device is offline.

Solution: From Azure Cloud Shell, you run the following Azure CLI command.

ai lot edge set-nodules --device-id Device1 --hub-nane Hub1 --content deployment.json

Does this meet the goal?

AYes

BNo

Answer : A

Question 3

You have 1,000 devices that connect to a standard tier Azure IoT hub.

All the devices are commissioned and send telemetry events to the built-in IoT Hub endpoint. You configure message enrichment on the events endpoint and set the enrichment value to $twin.tags.ipV4.

When you inspect messages on the events endpoint, you discover that all the messages are stamped with a string of "$twin.tags.ipV4".

What are two possible causes of the issue? Each Answer presents a complete solution.

NOTE: Each correct selection is worth one point.

AThe ipV4 tag is a restricted twin property that is unavailable for message enrichment.

BA standard tier IoT hub does not support device twin properties in message enrichments.

CThe device sending the message has no device twin.

DMessage enrichment cannot be added to messages going to a built-in endpoint.

EThe device twin path used for the value of the enrichment does not exist.

FThe device twin property value used for message enrichment is set to '$twin.tags.ipV4'.

Answer : C, E

In some cases, if you are applying an enrichment with a value set to a tag or property in the device twin, the value will be stamped as a string value. For example, if an enrichment value is set to $twin.tags.field, the messages will be stamped with the string '$twin.tags.field' rather than the value of that field from the twin. This happens in the following cases:

(E) Your IoT Hub is in the standard tier, but the device twin path used for the value of the enrichment does not exist. For example, if the enrichment value is set to $twin.tags.location, and the device twin does not have a location property under tags, the message is stamped with the string '$twin.tags.location'.

Your IoT Hub is in the basic tier. Basic tier IoT hubs do not support device twins.

https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-message-enrichments-overview

Question 4

You have an Azure IoT hub.

You need to enable Azure Defender for IoT on the IoT hub.

What should you do?

AFrom the Security settings of the loT hub, select Secure your loT solution.

BFrom the Diagnostics settings of the loT hub, select Add diagnostic setting.

CFrom Defender, add a security policy.

DFrom Defender, configure security alerts.

Answer : A

https://docs.microsoft.com/en-us/azure/defender-for-iot/device-builders/quickstart-onboard-iot-hub

Question 5

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?

ADevices

BJobs

CDevice groups

DAnalytics

Answer : D

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.

https://docs.microsoft.com/en-us/azure/iot-central/core/howto-create-analytics

Question 6

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?

ADevice ID

BDevice ID and Asset ID

CDevice ID and Gateway ID

DDevice ID. Asset ID, and Temperature

Answer : C

Question 7

You have 10 devices that connect to an Azure loT hub. Each device has a unique public IP address. The devices are not provisioned through DPS.

You discover an anomaly in messages from two devices.

You need to stop all messages from both devices without affecting the other devices.

Solution: You create a custom endpoint for the loT hub and configure a message routing query to redirect events from suspicious devices.

Does this meet the goal?

AYes

BNo

Answer : A

Microsoft AZ-220 Microsoft Azure IoT Developer Exam Practice Test