Topic design patterns for IoT in IOT Protocols - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a topic pattern for device status updates.

IOT Protocols

topic = "devices/[1]/status"

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

Aupdate

Bdevice_id

Csensor

Dcommand

Attempts:

3 left

💡 Hint

Common Mistakes

Using generic words like 'update' or 'command' instead of device identifier.

The topic pattern uses device_id to specify which device's status is being updated.

2fill in blank

medium

Complete the code to subscribe to all temperature sensors in building 5.

IOT Protocols

topic = "building/5/[1]/temperature"

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

A+

Bdevice

C#

Dfloor

Attempts:

3 left

💡 Hint

Common Mistakes

Using multi-level wildcard # which matches too broadly.

The single-level wildcard + matches any sensor or device at that level in the topic hierarchy.

3fill in blank

hard

Fix the error in the topic pattern to correctly subscribe to all sensors in all buildings.

IOT Protocols

topic = "[1]/sensors/#"

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

A#

Bbuilding

C+

Dbuildings

Attempts:

3 left

💡 Hint

Common Mistakes

Using multi-level wildcard # which cannot appear except at the end of the topic.

The single-level wildcard + matches any building identifier, and # matches all subtopics under sensors.

4fill in blank

hard

Fill both blanks to create a topic pattern for commands sent to a specific device in a room.

IOT Protocols

topic = "[1]/[2]/commands"

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

Aroom

Bdevice

Csensor

Dbuilding

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping device and room or using sensor instead of device.

The pattern uses room and device to target commands to a specific device in a room.

5fill in blank

hard

Fill all three blanks to create a topic pattern for publishing sensor data with building, floor, and sensor type.

IOT Protocols

topic = "[1]/[2]/[3]/data"

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

Abuilding

Bfloor

Csensor

Ddevice

Attempts:

3 left

💡 Hint

Common Mistakes

Using device instead of sensor or wrong order of location levels.

The topic pattern includes building, floor, and sensor to organize sensor data hierarchically.