Why HTTP serves request-response IoT needs in IOT Protocols - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to show the HTTP method used for request-response communication.

IOT Protocols

http_method = "[1]"

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AGET

BPOST

CCONNECT

DTRACE

Attempts:

3 left

💡 Hint

Common Mistakes

Using POST instead of GET for simple data retrieval.

The GET method is commonly used in HTTP for request-response communication, where a client requests data from a server.

2fill in blank

medium

Complete the code to define the HTTP status code for a successful response.

IOT Protocols

status_code = [1]

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A200

B301

C500

D404

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing 404 (not found) with 200 (success).

HTTP status code 200 means the request was successful and the server returned the requested data.

3fill in blank

hard

Fix the error in the HTTP request line to correctly specify the method.

IOT Protocols

request_line = "[1] /sensor/data HTTP/1.1"

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AFETCH

BGET

CSEND

DPULL

Attempts:

3 left

💡 Hint

Common Mistakes

Using non-standard methods like FETCH or SEND.

The HTTP request line must start with a valid method like GET to request data from the server.

4fill in blank

hard

Fill both blanks to create a dictionary comprehension that maps sensor IDs to their status if status is 'active'.

IOT Protocols

active_sensors = {sensor_id: [1] for sensor_id, [2] in sensors.items() if status == 'active'}

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Astatus

Cvalue

Dstate

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong variable names like value or state.

The comprehension maps sensor_id to status, and unpacks sensor_id and status from the items.

5fill in blank

hard

Fill all three blanks to create a dictionary comprehension that maps sensor IDs to their readings if reading is above 50.

IOT Protocols

filtered_readings = [1]([2]: [3] for [2], reading in readings.items() if reading > 50)

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Adict

Bsensor_id

Creading

Dlist

Attempts:

3 left

💡 Hint

Common Mistakes

Using list instead of dict, or wrong variable names.

The comprehension creates a dictionary mapping sensor_id to reading, filtering readings above 50.