Is a Session ID generated on the Server-side or Client-side?

Question

This web page http://www.w3schools.com/ASP/prop_sessionid.asp states that a session ID is generated on the ServerSide.

If this is the case, then how does a server kn

Answer 1

The SessionID is generated Server Side, but is stored on the Client within a Cookie. Then everytime the client makes a request to the server the SessionID is used to authenticate the existing session for the client.