Azure IoT Hub overview in IOT Protocols - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create an IoT Hub client using the Azure SDK.

IOT Protocols

from azure.iot.hub import IoTHubRegistryManager
connection_string = "HostName=example.azure-devices.net;SharedAccessKeyName=iothubowner;SharedAccessKey=key"
client = IoTHubRegistryManager([1])

Drag options to blanks, or click blank then click option'

Ahost_name

Bconnection_string

Cdevice_id

Dsas_token

Attempts:

3 left

💡 Hint

Common Mistakes

Using only the host name instead of the full connection string.

The IoTHubRegistryManager requires the connection string to connect to the IoT Hub.

2fill in blank

medium

Complete the code to send a message from a device to the IoT Hub.

IOT Protocols

from azure.iot.device import IoTHubDeviceClient, Message
conn_str = "HostName=example.azure-devices.net;DeviceId=device1;SharedAccessKey=key"
device_client = IoTHubDeviceClient.create_from_connection_string([1])
message = Message("Hello IoT Hub")
device_client.send_message(message)

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Aconn_str

Bdevice_id

Chost_name

Dsas_token

Attempts:

3 left

💡 Hint

Common Mistakes

Using only the device ID or host name instead of the full connection string.

The device client is created using the device's connection string to authenticate and send messages.

3fill in blank

hard

Fix the error in the code to receive a cloud-to-device message.

IOT Protocols

message = device_client.[1]()

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Areceive_message

Bsend_message

Cget_message

Dlisten_message

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'send_message' instead of 'receive_message'.

The correct method to receive a cloud-to-device message is receive_message().

4fill in blank

hard

Fill both blanks to create a device twin patch update.

IOT Protocols

patch = [1]({'firmwareVersion': '1.0.1'})
device_client.[2](patch)

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Ajson.dumps

Bsend_twin_patch

Cpatch_twin_reported_properties

Djson.load

Attempts:

3 left

💡 Hint

Common Mistakes

Using json.load instead of json.dumps.

Using send_twin_patch which is not a valid method.

The patch must be converted to JSON string using json.dumps, then sent with patch_twin_reported_properties.

5fill in blank

hard

Fill all three blanks to create a device twin desired properties filter.

IOT Protocols

desired_props = [1]['desired']
if desired_props.get([2]) [3] '1.0.1':
    print('Firmware update needed')

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Atwin

B'firmwareVersion'

C==

Ddevice_client

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'device_client' instead of 'twin'.

Using assignment '=' instead of comparison '=='.

The twin dictionary contains the 'desired' properties. We check if 'firmwareVersion' equals '1.0.1'.