Which of the following is the MOST likely cause of the issue?

Joe, a user, cannot browse on the intranet to a particular web server by using the servername given
to him by the administrator. Joe asks a coworker for the IP address of the same server, and is then
able to access the webpage using the IP address. Which of the following is the MOST likely cause of
the issue?

A.
DNS is not configured correctly.

B.
HTTP is not working on the server.

C.
HTTP is not working on the client.

D.
The network router is down.