7. What types of requests do you know?

Types of HTTP requests are:

• GET: Retrieve data.
• POST: Create new resources.
• DELETE: Delete resources.
• PUT: Update or create resources if they do not exist.
• PATCH: Partially update resources.
• OPTIONS: Check which methods are allowed when querying another domain (preflight request). The browser sends a request with headers:
  • Access-Control-Request-Method
  • Origin If the server allows this origin and method, it returns a response with headers:
  • Access-Control-Allow-Origin: Allowed origin.
  • Access-Control-Allow-Methods: Allowed methods. Finally, the requested request is executed.