Does every domain have unique IPs?

Question

I want to know whether every domain adress has a unique IP adress? Furthermore, where these IP\'s are located? and how does this redirection system works? When we try to access

Answer 1

I want to know whether every domain adress has a unique IP adress?

No. There are domains with more than one IP and IPs with more than one domain.

Furthermore, where these IP's are located?

They are not located anywhere, they are an abstract address of some computer(s)

and how does this redirection system works? When we try to access a web site by writing domain name how many redirections does it have?

Which redirection system do you mean?