Question: What Is REST API Interview Questions?

The more lightweight JSON (Javascript object notation) has become a popular alternative to XML for various reasons.

A couple obvious ones are: Less verbose- XML uses more words than necessary.

JSON is faster- Parsing XML software is slow and cumbersome..

How do I connect to an API?

Start Using an APIMost APIs require an API key. … The easiest way to start using an API is by finding an HTTP client online, like REST-Client, Postman, or Paw. … The next best way to pull data from an API is by building a URL from existing API documentation.

Is JSON a Web service?

JSON-WSP (JavaScript Object Notation Web-Service Protocol) is a web-service protocol that uses JSON for service description, requests and responses. It is inspired from JSON-RPC, but the lack of a service description specification with documentation in JSON-RPC sparked the design of JSON-WSP.

What protocol does REST API use?

HTTPREST is primarily used over HTTP and it makes use of HTTP GET, POST, PUT, DELETE and PATCH methods for different CRUD operations. SOAP also defines a binding to the HTTP protocol. When binding to HTTP, all SOAP requests are sent through HTTP POST.

What is REST API example?

A RESTful web service request contains: An Endpoint URL. An application implementing a RESTful API will define one or more URL endpoints with a domain, port, path, and/or querystring — for example, https://mydomain/user/123?format=json . The HTTP method.

What is the difference between API and RESTful API?

API is a broad term while REST API is a specialized API. There are a lot of differences between an API and REST API. REST stands for Representational State Transfer while API stands for Application Program Interface. … A REST API is a web service API which uses URIs and HTTP protocol and JSON for data format.

What are some key characteristics of rest?

Find out the 5 key features of the REST APIIt is stateless. One of the main features of an REST API is that its service is stateless, which means that every time we refer to it, it will be necessary to remind it our data, whether it is our user credentials or any other information. … It supports JSON and XML. … It is simple than SOAP. … Documentation. … Error messages.

What are the types of API?

The Differences Between API TypesREST, or Representational State Transfer, is a commonly used API category that is not dependent on a specific protocol. … SOAP, or Simple Object Access Protocol, is an API that connects different platforms together through HTTP and XML. … ASP.NET is a specific form of a REST API designed around .

What are REST principles?

REST is stateless. That means the communication between the client and the server always contains all the information needed to perform the request. … The client, the server and any intermediary components can all cache resources in order to improve performance. REST provides a uniform interface between components.

What is REST API beginner?

APIs specify the way information passed across platforms is structured so that applications can exchange data and information. REST is an API architecture style. It stands for representational state transfer. REST specifies how data is presented to a client in a format that is convenient for the client.

What makes a good REST API?

Good REST APIs: are well-documented and reliable. use HTTP verbs as Fielding originally defined. support X-HTTP-METHOD-Override to accommodate picky proxies.

When should I use REST API?

You should use REST because it really encompasses all the potential actions you want to do on a resource/object.GET – Retrieve a resource based on given conditions.POST – create a resource.PUT – update a resource with the given updated attributes.DELETE – delete a resource.

What is REST API in interview?

15 Rest API Interview Question & Answers1) Explain what is REST and RESTFUL? … 2) Explain the architectural style for creating web API? … 3) Mention what tools are required to test your web API? … 4) Mention what are the HTTP methods supported by REST? … 5) Mention whether you can use GET request instead of PUT to create a resource?More items…

What is swagger API?

Website. Swagger is in essence an Interface Description Language for describing RESTful APIs expressed using JSON. Swagger is used together with a set of open-source software tools to design, build, document, and use RESTful web services.

What is the difference between REST API and HTTP?

HTTP is a communications protocol that transports messages over a network. SOAP is a protocol to exchange XML-based messages that can use HTTP to transport those messages. Rest is a protocol to exchange any(XML or JSON) messages that can use HTTP to transport those messages.

What is rest in simple words?

REST is a software design pattern typically used for web applications. In layman’s terms this means that it is a commonly used idea used in many different projects. It stands for REpresentational State Transfer. … The most basic way of thinking about REST is as a way of formatting the URLs of your web applications.

What is REST API used for?

A RESTful API is an application program interface (API) that uses HTTP requests to GET, PUT, POST and DELETE data. An API for a website is code that allows two software programs to communicate with each other.

How does REST API work?

A REST API works in a similar way. … It is a set of rules that developers follow when they create their API. One of these rules states that you should be able to get a piece of data (called a resource) when you link to a specific URL. Each URL is called a request while the data sent back to you is called a response.