REST

Question 1

What is an API?

Answer 1

Application Programming Interface

There exists Wep API, Browser API and Server API.

Question 2

What is REST and RESTful services?

Answer 2

Representational State Transfer protocol

Question 3

SOAP

Answer 3

Simple Object Access protocol

Question 4

SOAP vs REST

Question 5

HTTP

Answer 5

Hypertext Transfer Protocol is an application-layer protocol designed for the transmission of hypermedia documents, such as HTML and image resources between web browsers and web servers.

Question 6

JWT

Answer 6

Jason Web Token

Question 7

What is the JWT structure?

Question 8

Explain the HTTP request lifecycle.

Question 9

ASP.NET Core pipeline

Question 10

HTTP Context

Question 11

How do you secure an ASP.NET Core app?

Answer 11

By using filters which can be applied like attributes.

Question 12

authentication vs. authorization

Question 13

How do FILTERS work?

Answer 13

Filters run as their own pipeline.

Sequence of a filter:

• Authorization
• Resource
• Action
• Exception
• Result

Question 14

builders vs. services vs. middleware OH, MY!

Question 15

model binders

Question 16

If there are two get methods in a controller, how do we specify which one to call?

Question 17

attribute routing (syntax example)

Question 18

external API vs open API vs internal API

Question 19

CORS

Answer 19

Cross-Origin Resource Sharing allows restricted resources on a web page to be requested from another domain.

CORS is an HTTP-header based mechanism that allows a server to indicate any origins (domain, scheme, or port) other than its own from which a browser should permit loading resources. CORS also relies on a mechanism by which browsers make a “preflight” request to the server hosting the cross-origin resource, in order to check that the server will permit the actual request. In that preflight, the browser sends headers that indicate the HTTP method and headers that will be used in the actual request.