REST API for IoT device in Raspberry Pi - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a REST API in the context of IoT devices?

A REST API is a way for IoT devices to communicate over the internet using simple web requests like GET and POST. It lets devices send and receive data easily.

beginner

Which HTTP method is commonly used to retrieve data from an IoT device's REST API?

The GET method is used to ask the device for data, like sensor readings, without changing anything on the device.

beginner

Why is JSON often used in REST APIs for IoT devices?

JSON is a simple text format that is easy for both humans and machines to read and write. It helps devices share data clearly and quickly.

intermediate

How does a Raspberry Pi act as a REST API server for an IoT device?

The Raspberry Pi runs a small program that listens for web requests. When it gets a request, it sends back data or performs actions, like turning on a light.

intermediate

What is the role of endpoints in a REST API for IoT devices?

Endpoints are specific web addresses on the device where you can send requests to get data or control the device. Each endpoint does a different job.

Which HTTP method would you use to update the settings of an IoT device via REST API?

A GET

B PUT

C DELETE

D POST

PUT is used to update or replace data on the device, such as changing settings.

What data format is most commonly used to send data in REST APIs for IoT devices?

A YAML

B XML

C CSV

D JSON

JSON is lightweight and easy to use, making it the most popular format for REST APIs.

In a REST API, what is an endpoint?

A A web address to access specific data or functions

B A type of sensor

C A programming language

D A hardware component

Endpoints are URLs where you send requests to interact with the device.

Which device can be used to host a REST API server for an IoT project?

A Printer

B Smartphone only

C Raspberry Pi

D Monitor

Raspberry Pi is a small computer that can run a REST API server for IoT devices.

What does the GET method do in a REST API?

A Retrieves data

B Updates data

C Deletes data

D Creates new data

GET requests ask the server to send back data without changing anything.

Explain how a Raspberry Pi can be set up to provide a REST API for an IoT device.

Think about how the Pi acts like a small website that devices can talk to.

Describe the role of HTTP methods in controlling an IoT device through a REST API.

Consider how you tell the device what to do using web requests.