Microsoft Azure Iot Certification Exam Prep Test

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.

  Yes

• B.

  No

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: You delete the enrollment group from the Device Provisioning Service. Does the solution meet the goal?

• A.

  Yes

• B.

  No

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 con¦gure automatic device management for the deployment. Which target Condition should you use? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point.  

• A.

  Properties.desired.wrapDriveType="WM105a"

• B.

  Properties.reported.wrapDriveType="WM105a"

• C.

  Tag.engine.wrapDriveType="WM105a"

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 con¦gure automatic device management for the deployment. Which Device Twin Path should you use? To answer, select the appropriate options in the answer area. NOTE: Each correct selection is worth one point.  

• A.

  Properties.desired.wrapOperating

• B.

  Properties.reported.wrapOperating

• C.

  Properties.wrapOperating

You plan to deploy a standard tier Azure IoT hub. You need to perform an over-the-air (OTA) update on devices that will connect to the IoT hub by using scheduled jobs. What should you use?

• A.

  A device-to-cloud message

• B.

  The device twin reported properties

• C.

  A cloud-to-device message

• D.

  A direct method

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 S1 tier

• B.

  One unit of the B2 tier

• C.

  One unit of the B1 tier

• D.

  One unit of the S3 tier

You have an IoT device that gathers data in a CSV file named Sensors.csv. You deploy an Azure IoT hub that is accessible at ContosoHub.azure-devices.net. You need to ensure that Sensors.csv is uploaded to 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.

  Upload Sensors.csv by using the IoT Hub REST API.

• B.

  The Azure subscription, select the IoT hub, select Message routing, and then configure a route to storage.

• C.

  From the Azure subscription, select the IoT hub, select File upload, and then configure a storage container.

• D.

  Configure the device to use a GET request to ContosoHub.azure-devices.net/devices/ContosoDevice1/¦les/notifications.

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: From the IoT hub, you change the credentials for the shared access policy of the IoT devices. Does the solution meet the goal?

• A.

  Yes

• B.

  No

You create an Azure IoT hub by running the following command. az iot hub create --resource-group MyResourceGroup --name MyIotHub --sku B1 -- location westus --partition-count 4 What does MylotHub support?

• A.

  Device Provisioning Service

• B.

  Cloud-to-device messaging

• C.

  Azure IoT Edge

• D.

  Device twins

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 ¦rewall that allows only port 443 and port 80. Which three communication protocols can you use? Each correct answer presents a complete solution  

• A.

  MQTT over WebSocket

• B.

  AMQP

• C.

  AMQP over WebSocket

• D.

  MQTT

• E.

  HTTPS

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 trafic 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.

  Connect the external networks to the IoT solution by using ExpressRoute.

• D.

  Configure the devices to use an HTTPS proxy.

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 con¦gure the GPS location for the device entry. The solution must prevent the changes from being propagated to the physical device. Solution: You use an Azure policy to apply tags to a resource group. Does the solution meet the goal?

• A.

  Yes

• B.

  No

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 con¦gure the GPS location for the device entry. The solution must prevent the changes from being propagated to the physical device. Solution: Solution: You add tags to the device twin. Does the solution meet the goal?

• A.

  Yes

• B.

  No

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 con¦gure the GPS location for the device entry. The solution must prevent the changes from being propagated to the physical device. Solution: You add the desired properties to the device twin. Does the solution meet the goal?

• A.

  Yes

• B.

  No

You have three Azure IoT hubs named Hub1, Hub2, and Hub3, a Device Provisioning Service instance, and an IoT device named Device1. Each IoT hub is deployed to a separate Azure region. Device enrollment uses the Lowest latency allocation policy. The Device Provisioning Service uses the Lowest latency allocation policy. Device1 is auto-provisioned to Hub1 by using the Device Provisioning Service. Device1 regularly moves between regions. You need to ensure that Device1 always connects to the IoT hub that has the lowest latency. What should you do?

• A.

   Con¦gure device attestation that uses X.509 certi¦cates.

• B.

  Implement device certificate rolling

• C.

  Disenroll and reenroll Device1

• D.

  Configure the re-provisioning policy.

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

• A.

  From the Linked IoT hubs blade of the Device Provisioning Service, link an Azure IoT hub

• B.

  From the Azure portal, create a new Azure IoT hub.

• C.

   From the Manage allocation policy blade of the Device Provisioning Service, con¦gure an allocation policy.

• D.

  From the Certi¦cates blade of the Device Provisioning Service, upload an X.509 certi¦cate to the Device Provisioning Service.

You have 10,000 IoT devices that connect to an Azure IoT hub. The devices do not support over-the-air (OTA) updates. You need to decommission 1,000 devices. The solution must prevent connections and autoenrollment for the decommissioned devices. Which two actions should you perform? Each correct answer presents part of the solution.

• A.

  Update the connectionState device twin property on all the devices

• B.

  Blacklist the X.509 root certi¦cation authority (CA) certi¦cate for the enrollment group.

• C.

  Delete the enrollment entry for the devices.

• D.

  Remove the identity certi¦cate from the hardware security module (HSM) of the devices.

• E.

  Delete the device identity from the device registry of the IoT hub.

You have an Azure IoT Central application. You need to connect an IoT device to the application. Which two settings do you require in IoT Central to con¦gure the device? Each correct answer presents part of the solution.

• A.

  Group SAS Primary Key

• B.

  The IoT hub name

• C.

  Scope ID

• D.

  Application Name

• E.

  Device ID

You have an Azure IoT hub. You need to recommend a solution to scale the IoT hub automatically. What should you include in the recommendation?

• A.

  Create an SMS alert in IoT Hub for the Total number of messages used metric

• B.

  Create an Azure function that retrieves the quota metrics of the IoT hub.

• C.

  Configure autoscaling in Azure Monitor.

• D.

  Emit custom metrics from the IoT device code and create an Azure Automation runbook alert.

You have an Azure IoT hub that uses a Device Provisioning Service instance. You create a new individual device enrollment that uses symmetric key attestation. Which detail from the enrollment is required to auto provision the device by using the Device Provisioning Service?

• A.

  The registration ID of the enrollment

• B.

  The primary key of the enrollment

• C.

  The device identity of the IoT hub

• D.

  The hostname of the IoT hub

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.

  Trigger Azure functions.

• B.

  Invoke direct methods.

• C.

  Update desired properties.

• D.

  Send cloud-to-device messages.

• E.

  Disable IoT device registry entries

• F.

  Update tags.

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 scope ID and the Device Provisioning Service endpoint

• B.

  The primary key of the Device Provisioning Service shared access policy and the global device endpoint

• C.

  The X.509 device certi¦cate and the certi¦cate chain

• D.

  The endorsement key and the registration ID

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 de¦ne in the manifest? Each correct answer presents part of the solution.

• A.

  Mcr.microsoft.com/azureiotedge-simulated-temperature-sensor:1.0

• B.

  Mcr.microsoft.com/azureiotedge-simulated-temperature-sensor:1.0

• C.

  Mcr.microsoft.com/iotedgedev:2.0

• D.

  Mycr.azurecr.io/temperature-module:latest

• E.

  Mcr.microsoft.com/azureiotedge-hub:1.0

You have an Azure IoT solution that includes an Azure IoT Hub named Hub1 and an Azure IoT Edge device named Edge1. Edge1 connects to Hub1. You need to deploy a temperature module to Edge1.

• A.

  From the Azure portal, navigate to Hub1 and select IoT Edge. Select Edge1, and then select Manage Child Devices. From a Bash prompt, run the following command: az iot edge set-modules -device-id Edge1 -hub-name Hub1 -content C:\deploymentMan1.json

• B.

  Create an IoT Edge deployment manifest that speci¦es the temperature module and the route to $upstream. From a Bush prompt, run the following command: az iot hub monitor-events-device-id Edge1 -hub-name Hub1

• C.

  From the Azure portal, navigate to Hub1 and select IoT Edge. Select Edge1, select Device Twin, and then set the deployment manifest as a desired property. From a Bash prompt, run the following command az iot hub monitor-events-device-id Edge1 -hub-name Hub1

• D.

  Create an IoT Edge deployment manifest that speci¦es the temperature module and the route to $upstream. From a Bush prompt, run the following command: az iot edge set-modules -device-id Edge1 -hub-name Hub1 -content C:\deploymentMan1.json

Your company is creating a new camera security system that will use Azure IoT Hub. You plan to use an Azure IoT Edge device that will run Ubuntu Server 18.04. You need to con¦gure the IoT Edge 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. Eg. 1 2 3

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. Eg. 1 2 3

You are implementing a proof of concept (POC) for an Azure IoT solution. You need to deploy an Azure IoT Edge device as part of the POC. On which two devices can you deploy IOT Edge? Each correct answer presents a complete solution.

• A.

  Device 1

• B.

  Device 2

• C.

  Device 3

• D.

  Device 4

You have 100 devices that connect to an Azure IoT hub. You plan to use Azure functions to process all the telemetry messages from the devices before storing the messages. You need to con¦gure the functions binding for the IoT hub. Which two con¦guration details should you use to con¦gure the binding? Each correct answer presents part of the solution

• A.

  The name of the resource group that contains the IoT hub

• B.

  The IoT hub's connection string shared access key that has Service connect permissions

• C.

  The connection string of the Azure Event Hub-compatible endpoint from the IoT Hub built-in endpoints

• D.

  The Azure Event-Hub compatible name  

You have an instance of Azure Time Series Insights and an Azure IoT hub that receives streaming telemetry from IoT devices. You need to con¦gure Time Series Insights to receive telemetry from 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. Eg. 1 2 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 correct answer presents a complete solution.

• A.

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

• B.

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

• C.

  The device sending the message has no device twin.

• D.

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

• E.

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

• F.

  The device twin property value used for message enrichment is set to "$twin.tags.ipV4".

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 ¦rst?

• A.

  Az iot hub monitor-feedback --hub-name Hub1

• B.

  Az iot hub generate-sas-token --hub-name Hub1

• C.

  Az iot hub con¦guration list --hub-name Hub1

• D.

  Az extension add -name azure-cli-iot-ext

You have an Azure Stream Analytics job that connects to an Azure IoT hub named Hub1445 as a streaming data source. Hub1445 is con¦gured 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.

  Change the Route1 route query to true.

• B.

  Enable the Route3 route.

• C.

  Disable the Route2 route.

• D.

  Enable the fallback route.

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.

  Routes

• B.

  DeviceTelemetry

• C.

  Connections

• D.

  C2DCommands

You have 20 devices that connect to an Azure IoT hub. You open Azure Monitor as shown in the exhibit.  You discover that telemetry is not being received from ¦ve IoT devices. You need to identify the names of the devices that are not generating telemetry and visualize the data. What should you do ¦rst?  

• A.

  Add the Number of throttling errors metric and archive the logs to an Azure storage account

• B.

  Con¦gure diagnostics for Routes and stream the logs to Azure Event Hubs.

• C.

  Add the Telemetry messages sent metric and archieve the logs to an Azure Storage account

• D.

  Con¦gure diagnostics for Connections and send the logs to Azure Log Analytics.

You have an Azure IoT solution that includes a standard tier Azure IoT hub and an IoT device. The device sends one 100-KB device-to-cloud message every hour. You need to calculate the total daily message consumption of the device. What is the total daily message consumption of the device?

• A.

  24

• B.

  600

• C.

  2400

• D.

  4800

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 Disconnected events

• B.

  The Device Disconnected events

• C.

  The Connections logs

• D.

  The device credentials

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 alertCondition and the name of the IoT hub. Which two actions should you perform? Each correct answer presents part of the solution.

• A.

  Con¦gure File upload for each IoT hub. Con¦gure the device to send a ¦le to an Azure Storage container that contains the device name and status message.

• B.

  Add the following message enrichments: Name = iotHubName Value = $twin.tag.location Endpoint = MessageAlert

• C.

  Create an IoT Hub routing rule that has a data source of Device Twin Change Events and select the endpoint for MessageAlerts

• D.

  Add the following message enrichments: Name = iotHubName Value = $iothubname Endpoint = MessageAlert

• E.

  Create an IoT Hub routing rule that has a data source of Device Telemetry Messages and select the endpoint for MessageAlerts.

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. Eg 1 2 3

Case Study 1 -Q1 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 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 You create a new IoT device named device1 on iothub1. Device1 has a primary key of Uihuih76hbHb. How should you complete the device connection string? To answer, select the appropriate options in the answer area.  

Case Study 1 -Q5 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 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 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.  

Case Study 2 - Q1 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, andnoise 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. 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 You need to configure Stream Analytics to meet the POV requirements. What are two ways to achieve the goal?EachAnswer presents a complete solution. NOTE: Each correct selection is worth one point.  

• A.

  From IoT Hub, create a custom event hub endpoint, and then configure the endpoint as an input to Stream Analytics.

• B.

  Create a Stream Analytics module and then deploy the module to all IoT Edge devices in the fleet.

• C.

  Create an input in Stream Analytics that uses the built-in events endpoint of IoTHub as the source.

• D.

  Route telemetry to an Azure Blob storage custom endpoint, and then configure the Blob storage as a reference input for Stream Analytics.

Case Study 1 -Q6 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 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 Youneedtoenabletelemetry message tracing through the entire IoT solution. What should you do?  

• A.

  Monitor device lifecycle events.

• B.

  Upload IoT device logs by using the File upload feature.

• C.

  Enable the Device Telemetry diagnostic log and stream the log data to an Azure event hub

• D.

  Implement distributed tracing.

Case Study 1 -Q2 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 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 What should you do to identify the cause of the connectivity issues?

• A.

  Send cloud-to-device messages to the IoT devices

• B.

  Use the heart beat pattern to send messages from the IoT devices to iothub1.

• C.

  Monitor the connection status of the device twin by using an Azure function

• D.

  Enable the collection of the Connections diagnostics logs and set up alerts for the connected devices count metric

Case Study 1 -Q3 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 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 You plan to deploy Azure Time Series Insights. What should you create on iothub1 before you deploy Time Series Insights?

• A.

  A new message route

• B.

  A new consumer group

• C.

  A new shared access policy

• D.

  An IP filter rule

Case Study 1 -Q3 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 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 How should you complete the GROUP BY clause to meet the Streaming Analytics requirements?

• A.

  GROUP BY SessionWindow(Second, 30, 60)

• B.

  GROUP BY TumblingWindow(Second, 30)

• C.

  GROUP BY SlidingWindow(Second, 30)

• D.

  GROUP BY SessionWindow(Second, 30, 60)

Case Study 2 - Q2 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, andnoise 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. 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 You need to add Time Series Insights to the solution to meet the pilot requirements. Which three actions should you perform in sequence? 

Case Study 2 - Q3 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, andnoise 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. 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 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.

  Azure Blob storage

• B.

  Microsoft Power BI

• C.

  Azure Cosmos DB

• D.

  Azure SQL Database

Case Study 2 - Q4 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, andnoise 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. 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 You need to recommend the format of telemetry messages to meet the POV requirements. What should you recommend?

• A.

  XML

• B.

  Avro

• C.

  JSON

Case Study 2 - Q5 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, andnoise 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. 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 During the POV phase, telemetry from IoTHub stops flowing to the hot path. The cold path continues to work. What should you do to restore the hot path?

• A.

  Disable the fallback route.

• B.

  Run the Test all routes action.

• C.

  Create an explicit route for the hot path

• D.

  Modify cold-route to send only some telemetry data to the cold path.

From the Device Provisioning Service, you create an enrollment as shown in the exhibit. (Click the Exhibit tab.) You need to deploy a new IoT device. What should you use as the device identity during attestation?

• A.

  A self-signed X.509 certificate

• B.

  The random string of alphanumeric characters

• C.

   the HMACSHA256 hash of the device’s registration ID

• D.

  The endorsement key of the device’s Trusted Platform Module (TPM)