All about HTTP

Question 1

HTTP request methods

Answer 1

The request indicates the method to be performed on the resource identified by the URI.

https://www.restapitutorial.com/lessons/httpmethods.html
https://www.tutorialspoint.com/http/http_requests.htm

Question 2

HTTP response status codes

Answer 2

1xx: informational
2xx: Success
3xx: redirection
4xx: client error
5xx: server error

Question 3

HTTP Request/Response Packet

Answer 3

It is separated into three parts.
1. Request/Response (R/R) Message - includes the R/R URL, R/R method, status code, remote address, etc.
2. Header - metadata about the message.
3. Body/Payload - the data. This may or may not be included.