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NEW QUESTION 32
You plan to deploy an Azure IoT hub.
The IoT hub must support the following:
* Three Azure IoT Edge devices
* 2,500 IoT devices
Each IoT device will spend a 6 KB message every five seconds.
You need to size the IoT hub to support the devices. The solution must minimize costs.
What should you choose?

A. one unit of the B2 tierB. one unit of the S1 tierC. one unit of the B1 tierD. one unit of the S3 tier

Answer: D

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 33
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 keyB. a certificate thumbprintC. an X.509 self-signed certificateD. An X.509 certificate signed by a root certification authority (CA).

Answer: D

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 34
During the POV phase, telemetry from IoT Hub stops flowing to the hot path. The cold path continues to work.
What should you do to restore the hot path?

A. Modify cold-route to send only some telemetry data to the cold path.B. Create an explicit route for the hot path.C. Disable the fallback route.D. Run the Test all routes action.

Answer: B

Explanation:
Explanation
Explanation/Reference:
Process and manage data
Question Set 3

 

NEW QUESTION 35
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:

Reference:
https://docs.microsoft.com/en-us/azure/iot-hub/iot-hub-devguide-device-twins

 

NEW QUESTION 36
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 hostname of the IoT hubB. the device identity of the IoT hubC. the registration ID of the enrollmentD. the primary key of the enrollment

Answer: C

Explanation:
The registration ID is used to uniquely identify a device registration with the Device Provisioning Service. The device ID must be unique in the provisioning service ID scope. Each device must have a registration ID.
Note: An individual enrollment is an entry for a single device that may register. Individual enrollments may use either X.509 leaf certificates or SAS tokens (from a physical or virtual TPM) as attestation mechanisms. The registration ID in an individual enrollment is alphanumeric, lowercase, and may contain hyphens.
Reference:
https://docs.microsoft.com/en-us/azure/iot-dps/concepts-service#enrollment

 

NEW QUESTION 37
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