what is advantage of authentication and authorization code example

Example 1: authentication vs authorization

Authentication : 
				telling the system who you are 
				by providing username and password.


		Authorization : 
				things you can do according to who you are 



 ------  few ways of Authorization: 
 		Basic Auth --
 			 providing username and password for each and every request you 
             make

 		Token based 
 			generate a long token just one time 
 			and use that for the rest of the request 

 			similar to the visitor tag you get when you go to certain 
            restricted areas 


 			API KEY --- 


 			Bearer Token --

Example 2: what is authentication

Authentication is the process of recognizing a user’s identity. 
 It is the mechanism of associating an incoming request 
 with a set of identifying credentials. 
 credentials provided are compared to those on a file 
 in a database of the authorized user’s information 
 on a local operating system 
 or within an authentication server.