API

Question 1

What is web API

Answer 1

Application Programming Interface, provides interaction between software application, for example iphone and android and web site

Question 2

Advantages Web API y WCF

Answer 2

The intercommunication between platforms, the standard use of http verbs like get, post, put, delete, for all crud operations, is open source.

Question 3

What is rest and restful

Answer 3

Rest stands for Representational State transfer is a set of guidelines which helps in creating a system where applications can easily communicate with each other.

Restful is a systema applying rest guidelines

Question 4

REST Guidelines

Answer 4

Separation of client and server
Stateless The server will not store anything
Uniform Interfaces
Cacheable
Layered system

Question 5

HTTP verbs

Answer 5

Get Obtain information about a resource
POST Create a new resource
PUT Update a resource
DELETE Delete a resource

Question 6

API key Authentication

Answer 6

In API Key authentication the API owner will share an API key with the users and this key will authenticate the users of the API (token)

Question 7

What is token based authentication

Answer 7

This authentication is a 4 step process
1 The client sent the credentials of user
2 The server authenticate using that credentials and generates the access token
3 The application uses th token in the next request until the token expires.
4 If the access token is expired. then the client application can request for a new access token by using refresh token.

Question 8

What is OAuth

Answer 8

OAuth is a standard for creating token based authentication and authorization

Question 9

What is JWT Authentication

Answer 9

JWT Authentication is a token base authentication where JWT is a token format

Question 10

What are the parts of JWT token

Answer 10

Header (algorithm, type)
PayLoad (subject, name, admin)