Microsoft Microsoft Certifications AZ-220 Questions & Answers

• Question 141:

  HOTSPOT

  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.

  Hot Area:

  

  Correct Answer:

  

  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

• Question 142:

  HOTSPOT

  You have an Azure IoT Central application that has a custom device template.

  You need to configure the device template to support the following activities:

  1.

  Return the reported power consumption.

  2.

  Configure the desired fan speed.

  3.

  Run the device reset routine.

  4.

  Read the fan serial number.

  Which option should you use for each activity? Each correct answer presents part of the solution.

  NOTE: Each correct selection is worth one point.

  Hot Area:

  

  Correct Answer:

  

  Box 1: Measurement

  Telemetry/measurement is a stream of values sent from the device, typically from a sensor. For example, a sensor might report the ambient temperature.

  Box 2: Property

  The template can provide a writeable fan speed property

  Properties represent point-in-time values. For example, a device can use a property to report the target temperature it's trying to reach. You can set writeable properties from IoT Central.

  Box 3: Settings

  Box 4: Command

  You can call device commands from IoT Central. Commands optionally pass parameters to the device and receive a response from the device. For example, you can call a command to reboot a device in 10 seconds.

  Reference:

  https://docs.microsoft.com/en-us/azure/iot-central/core/howto-set-up-template

• Question 143:

  HOTSPOT

  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.

  Hot Area:

  

  Correct Answer:

  

• Question 144:

  HOTSPOT

  You have an Azure IoT hub named Hub1 and an Azure Time Series Insights environment named tsi1. Tsi1 connects to Hub1. The solution has been operational for 6 months.

  Tsi1 is configured as shown in the following exhibit.

  

  Hub1 receives 1 million messages per day. Each message is up to 1 KB and is formatted as JSON.

  Hub1 has seven days of retained telemetry.

  For each of the following statements, select Yes if the statement is true. Otherwise, select No.

  NOTE: Each correct selection is worth one point.

  Hot Area:

  

  Correct Answer:

  

  Reference: https://docs.microsoft.com/en-us/azure/time-series-insights/time-series-insights-overview

• Question 145:

  HOTSPOT

  You are planning a proof of concept (POC) that will use an Azure IoT hub.

  You have two self-signed client authentication certificates named Cert1 and Cert2. Cert1 has a basic constraint that contains Subject Type=CA. Cert2 has a basic constraint that contains Subject Type=End Entity.

  You need to identify which certificates to use.

  What should you identify? To answer, select the appropriate options in the answer area.

  NOTE: Each correct selection is worth one point.

  Hot Area:

  

  Correct Answer:

  

  Box 1: Cert2 only Cert2: The leaf certificate, or end-entity certificate, identifies the certificate holder. It has the root certificate in its certificate chain as well as zero or more intermediate certificates. The leaf certificate is not used to sign any other certificates. It uniquely identifies the device to the provisioning service and is sometimes referred to as the device certificate.

  Box 2: Cert1 only Cert1: A root certificate is a self-signed X.509 certificate representing a certificate authority (CA). It is the terminus, or trust anchor, of the certificate chain. Root certificates can be self-issued by an organization or purchased from a root certificate authority.

  Reference: https://docs.microsoft.com/en-us/azure/iot-dps/concepts-x509-attestation

• Question 146:

  HOTSPOT

  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.

  Hot Area:

  

  Correct Answer:

  

  Box 1: Device1 and Device2

  Connection strings for downstream devices need the following components:

  The gateway device that the device connects through. Provide the hostname value from the IoT Edge gateway device's config file: GatewayHostName={gateway hostname}

  Box 2: Gateway1

  To deploy the IoT Edge hub module and configure it with routes to handle incoming messages from downstream devices, follow these steps:

  In the Azure portal, navigate to your IoT hub.

  Go to IoT Edge and select your IoT Edge device that you want to use as a gateway.

  Select Set Modules.

  On the Modules page, you can add any modules you want to deploy to the gateway device.

  Select Next: Routes.

  On the Routes page, make sure that there is a route to handle messages coming from downstream devices. For example:

  A route that sends all messages, whether from a module or from a downstream device, to IoT Hub: Name: allMessagesToHub Value: FROM /messages/* INTO $upstream

  Box 3: FROM /messages/* INTO $upstream

  Reference: https://docs.microsoft.com/en-us/azure/iot-edge/how-to-authenticate-downstream-device

• Question 147:

  DRAG DROP

  You have an Azure subscription that contains an Azure IoT hub and 100 IoT devices.

  The devices connect to the IoT hub by using the Message Queuing Telemetry Transport (MQTT) protocol and authenticate to the IoT hub by using symmetric keys

  You need to configure the username and password for the MQTT connection.

  What should you use? To answer, drag the appropriate components to the correct targets. Each component may be used once more than once or not at all. You may need to drag the split bar between panes or scroll to view content.

  NOTE: Each correct selection is worth one point.

  Select and Place:

  

  Correct Answer:

  

• Question 148:

  HOTSPOT

  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.

  Hot Area:

  

  Correct Answer:

  

  Box 1: Protocol translation

  In the protocol translation gateway pattern, only the IoT Edge gateway has an identity with 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.

  Box 2: Advanced MessageQueuing Protocol (AMQP)

  Connection multiplexing - All devices connecting to IoT Hub through an IoT Edge gateway can use the same underlying connection. This multiplexing capability requires that the IoT Edge gateway uses AMQP as its upstream protocol.

  Reference:

  https://docs.microsoft.com/en-us/azure/iot-edge/iot-edge-as-gateway

• Question 149:

  DRAG DROP

  You have an Azure IoT hub.

  You need to deploy a Device Provisioning Service instance that uses X.509 attestation to support new loT devices.

  Which three actions should you perform in sequence in the Azure portal?

  To answer move the appropriate actions from the list of actions to the answer area and arrange them in the correct order.

  Select and Place:

  

  Correct Answer:

  

• Question 150:

  DRAG DROP

  You need to configure a digital twin to accept device telemetry data from the loT hub

  Which four actions should you perform m sequence?

  To answer, move the appropriate actions from the list of actions to the answer area and arrange them in the correct order.

  Select and Place:

  

  Correct Answer: