Most Commonly Asked Rest APIs Interview Questions

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Introduction

Representational State Transfer (REST) is an architectural paradigm for designing online applications based on the Hypertext Transfer Protocol (HTTP).

A REST API, often known as a RESTful API, adheres to REST principles. In a REST API, all data are represented by a unique, consistent resource identifier and processed as resources (URI). The Twitter API, for instance, makes each tweet a resource that clients can access. Using Twitter’s API, clients may publish tweets and do other operations on the site.

REST’s development has made APIs more accessible while revealing their strength and potential. REST APIs are simple to create and cacheable with a resource-oriented architecture. In addition, RESTful APIs have spawned important developments such as microservices architecture and cloud computing. Therefore, it is not surprising that REST API developers are in high demand today, given that they provide a competitive advantage to businesses that employ RESTful services.

Interview Questions on Rest API

1. What is your understanding of RESTful Web Services?

RESTful web services are those that adhere to the REST architecture. REST stands for Representational State Transfer and is implemented using the HTTP protocol (web protocol). These services are lightweight, provide maintainability and scalability, and communicate between applications written in various programming languages. Utilizing request headers, request body, response body, status codes, etc., they provide the client access to server-hosted resources via the web browser.

2. What does it mean to be “statelessness” in REST?

The REST architecture is known as stateless because it does not keep any client session-related data on the server. In essence, session states are maintained solely on the client’s side. Effectively, this is known as statelessness.

It guarantees that the server cannot exploit any saved information. However, since no data are kept, each request from the client to the server must include all the required request information.

3. What are some significant REST characteristics?

4. Can you outline the cons of RESTful web services?

5. Can transport layer security (TLS) be implemented in REST?

6. What are the pros and cons of statelessness in REST APIs?

7. What is ‘Addressing’ in RESTful WEB services?

8. What do you mean by Idempotent methods?

9. How are REST and SOAP different?

10. What are the differences between AJAX and REST?

11. What are the main security problems that web services face?

This blog post should help you with REST API interview questions. These REST API interview questions can help you ace your next interview.

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