Learning ASP.NET Web API (Video 22)

This video tutorial covers the concept of Cross-Origin Resource Sharing (CORS) in Web APIs. It begins with an introduction to SSL and CORS, explaining the same-origin policy and its security implications. The video defines what an origin is and discusses common CORS issues, such as API calls failing due to CORS restrictions. It then provides a detailed guide on configuring CORS in ASP.NET Web API, including setting up policies to allow requests from different origins. The tutorial also explains how to apply these CORS policies at the application, controller, and method levels, and concludes with a brief overview of the next topic, which is input validation.

What is the main reason browsers enforce the same-origin policy?

• To reduce server load

• To improve website performance

• To enhance user experience

• To ensure security

Which component is NOT considered part of the origin in Internet Explorer?

• Scheme

• Domain

• Port

• Path

What is the purpose of configuring CORS in a Web API?

• To improve API performance

• To enhance API security

• To allow the API to be consumed by different applications

• To restrict access to the API

How can CORS policies be applied in a Web API?

• Only at the application level

• Only at the method level

• Only at the controller level

• At the application, controller, or method level

What can be done if a specific method should not have CORS applied, despite being set at the application level?

• Ignore the CORS policy

• Apply a different CORS policy

• Remove CORS from the application

• Disable CORS at the method level