Edge-to-cloud data pipeline in IOT Protocols - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to publish data from an edge device using MQTT.

IOT Protocols

client.connect('[1]')

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Abroker.hivemq.com

Blocalhost

Cexample.com

D192.168.1.1

Attempts:

3 left

💡 Hint

Common Mistakes

Using localhost when the broker is remote

Using an invalid IP address

The MQTT client connects to the public broker at broker.hivemq.com to send data.

2fill in blank

medium

Complete the code to subscribe to a topic on the cloud server.

IOT Protocols

client.subscribe('[1]')

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Adevice/command

Bsensor/data

Calerts

Dstatus/update

Attempts:

3 left

💡 Hint

Common Mistakes

Subscribing to the wrong topic

Using a topic meant for commands

The client subscribes to the 'sensor/data' topic to receive sensor readings.

3fill in blank

hard

Fix the error in the QoS level setting for MQTT publish.

IOT Protocols

client.publish('sensor/data', payload, qos=[1])

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A3

B0

C1

D2

Attempts:

3 left

💡 Hint

Common Mistakes

Using invalid QoS values like 3

Using QoS 0 when delivery guarantee is needed

QoS levels for MQTT are 0, 1, or 2. Level 1 ensures message delivery at least once.

4fill in blank

hard

Fill both blanks to create a dictionary comprehension filtering sensor readings above threshold.

IOT Protocols

filtered_data = {k: v[1] for k, v in readings.items() if v [2] 50}

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A**2

B>

C<

D*3

Attempts:

3 left

💡 Hint

Common Mistakes

Using multiplication instead of exponentiation

Using wrong comparison operators

The comprehension squares the values and filters those greater than 50.

5fill in blank

hard

Fill all three blanks to build a dictionary with uppercase keys, values, and filter condition.

IOT Protocols

result = { [1]: [2] for k, v in data.items() if v [3] 10 }

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Ak.upper()

Bv

C>

Dk.lower()

Attempts:

3 left

💡 Hint

Common Mistakes

Using k.lower() instead of k.upper()

Using wrong comparison operator

Keys are converted to uppercase, values kept as is, filtering values greater than 10.