Why REST APIs exist - Quick Recap

Recall & Review

beginner

What is the main purpose of REST APIs?

REST APIs exist to allow different software systems to communicate over the internet in a simple, standardized way.

beginner

Why do REST APIs use HTTP methods like GET, POST, PUT, DELETE?

They use HTTP methods to clearly define actions like reading, creating, updating, or deleting data, making communication easy and predictable.

beginner

How do REST APIs help developers work together?

REST APIs provide a common language and rules, so developers can build different parts of a system independently but still connect them smoothly.

intermediate

What problem do REST APIs solve compared to older methods?

REST APIs solve the problem of complex, tightly connected systems by making communication simple, flexible, and scalable over the web.

intermediate

Why is REST considered stateless and why does that matter?

REST is stateless because each request contains all needed info, which makes servers simpler and helps systems handle many users easily.

What does REST API mainly help with?

A Running programs faster

B Designing user interfaces

C Connecting different software systems over the internet

D Storing data on a local computer

REST APIs are designed to connect different software systems over the internet in a simple way.

Which HTTP method is used to get data from a REST API?

A POST

B GET

C DELETE

D PUT

GET is used to request or read data from a REST API.

Why is REST API communication called stateless?

A Because it remembers previous requests

B Because it stores user sessions on the server

C Because it uses cookies

D Because each request is independent and contains all needed info

REST APIs are stateless, meaning each request is independent and must have all information needed to process it.

What problem does REST API solve compared to older systems?

A It simplifies and standardizes communication over the web

B It makes communication complex

C It tightly couples software parts

D It only works on local networks

REST APIs simplify and standardize communication, making systems more flexible and scalable.

How do REST APIs help developers?

A By providing a common set of rules to connect different parts independently

B By forcing them to write code in the same language

C By limiting the number of users

D By storing all data on one server

REST APIs provide common rules so developers can build parts independently but still connect them easily.

Explain in your own words why REST APIs exist and what problems they solve.

Think about how different apps talk to each other over the internet.

Describe how REST APIs use HTTP methods to make actions clear and predictable.

Imagine ordering food: you ask (GET), add (POST), change (PUT), or cancel (DELETE) your order.