What is DNS?

DNS stands for "Domain Name Server." 

The domain name server acts like a large telephone directory in that it's the master database, which associates a domain name such as (http://www.mydomain.com) with the appropriate IP number. 

Consider the IP number something similar to a phone number: When someone calls http://www.CyberHostPlus.biz, your ISP looks at the DNS server, and asks "how do I contact url-solutions.com?" 

The DNS server responds, it can be found at: 216.127.78.156

As the Internet understands it, this can be considered the phone number for the server, which houses the http://www.CyberHostPlus.biz web site. 

When it does, you'll know your domain name is answering to your account on "our servers", and has been officially transferred.