You work as a Network Administrator for NetTech Inc. When you enter http://66.111.64.227 in the browser`s address bar, you are able to access the site. But, you are unable to access the site when you enter http://www.company.com. What is the most likely cause? 

Answer options:

A. The site`s Web server is offline.
B. The site`s Web server has heavy traffic.
C. WINS server has no NetBIOS name entry for the server.
D. DNS entry is not available for the host name.

D