Protocol translation at edge in IOT Protocols - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to start the edge translator service.

IOT Protocols

edge_translator.start([1])

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Aconfig.yaml

Bconfig_file

Cstart()

Drun()

Attempts:

3 left

💡 Hint

Common Mistakes

Using method calls instead of file names

Using incorrect file names

The service requires the configuration file config.yaml to start properly.

2fill in blank

medium

Complete the code to translate MQTT messages to CoAP format.

IOT Protocols

translator.convert('mqtt', 'coap', message[1])

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A.data

B.payload

C.send()

D.content

Attempts:

3 left

💡 Hint

Common Mistakes

Using method calls instead of properties

Using incorrect property names

The payload property contains the actual message data to translate.

3fill in blank

hard

Fix the error in the code to correctly map CoAP requests to MQTT topics.

IOT Protocols

mapping = {req.topic: req[1] for req in coap_requests}

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A.message

B.topic

C.payload

D.data

Attempts:

3 left

💡 Hint

Common Mistakes

Using topic as value instead of payload

Using incorrect property names

The payload contains the data to be sent to the MQTT topic.

4fill in blank

hard

Fill both blanks to filter and translate only temperature sensor data.

IOT Protocols

filtered = {msg[1]: translator.convert('mqtt', 'coap', msg[2]) for msg in messages if 'temperature' in msg.topic}

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A.topic

B.payload

C.data

D.content

Attempts:

3 left

💡 Hint

Common Mistakes

Using data or content instead of payload

Using payload as key instead of topic

The dictionary keys are message topics, and the values are the converted payloads.

5fill in blank

hard

Fill all three blanks to create a mapping of device IDs to their latest translated messages.

IOT Protocols

latest_messages = [1]{msg.device_id: translator.convert([2], [3], msg.payload) for msg in device_msgs if msg.status == 'active'}

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Adict(

B'mqtt'

C'coap'

Dlist(

Attempts:

3 left

💡 Hint

Common Mistakes

Using list instead of dict

Swapping protocol names

Missing parentheses

We use dict( to create a dictionary, translating from MQTT to CoAP for active devices.