HTTP request methods for IoT (GET, POST, PUT) in IOT Protocols - Cheat Sheet & Quick Revision

Recall & Review

beginner

What does the GET method do in HTTP requests for IoT devices?

GET requests ask the server to send back data. In IoT, it is used to read sensor data or device status without changing anything.

beginner

Explain the purpose of the POST method in IoT HTTP communication.

POST sends new data to the server. IoT devices use POST to send sensor readings or events to a server for storage or processing.

intermediate

What is the difference between PUT and POST methods in IoT HTTP requests?

PUT updates or replaces existing data on the server, while POST adds new data. PUT is idempotent, meaning repeating it has the same effect as once.

intermediate

Why is the PUT method considered idempotent in IoT HTTP requests?

Because sending the same PUT request multiple times results in the same server state. This helps avoid unintended changes in IoT device data.

beginner

Give a simple example of when an IoT device would use a POST request.

An IoT temperature sensor sends a POST request to the server every minute with the latest temperature reading to log data.

Which HTTP method is used by an IoT device to retrieve data without changing it?

A GET

B POST

C PUT

D DELETE

GET requests are used to read or retrieve data without modifying it.

What does the POST method do in IoT HTTP communication?

A Deletes data on the server

B Updates existing data on the server

C Retrieves data from the server

D Sends new data to the server

POST sends new data, such as sensor readings, to the server.

Which HTTP method is idempotent and used to update or replace data in IoT?

A GET

B PUT

C POST

D PATCH

PUT is idempotent and updates or replaces existing data.

If an IoT device sends the same PUT request multiple times, what happens?

A The server deletes the data

B The server data changes each time

C The server data remains the same after the first request

D The server rejects the request

PUT is idempotent, so repeated requests do not change the server state after the first update.

Which HTTP method would an IoT device use to send a new sensor reading to a server?

A POST

B GET

C PUT

D HEAD

POST is used to send new data like sensor readings to the server.

Describe the roles of GET, POST, and PUT HTTP methods in IoT device communication.

Think about reading, creating, and updating data.

Explain why idempotency of the PUT method is important for IoT devices.

Consider what happens if a device sends the same update multiple times.