HTTP tutorial - URL
HTTP URLs:
http://<Server>/dw/Request/<URL_Suffix> for 'normal', insecure access.
https://<Server>/dw/Request/<URL_Suffix> for the safe variant.
Note:
The URI (Unified Resource Identifier) describes how a resource can be uniquely addressed. In the case of HTTP, the scheme http:// or https:// is meant here.
For URL https://<Server>/dw/Request/<URL_suffix>, the part /<Server>/dw/Request/<URL_suffix> represents the URI.
A query string is the part that is introduced by the character ?, e.g. https://<Server>/dw/Request/<URL_Suffix>? int_1 = 24 & int_2 = 42
This part contains parameters in the form of key-value pairs. In the further course, these parameters will be dealt with in more detail.
You can find more on this topic at the Mozilla Developer Network MDN, for example.