CompTIA A+ Question K-49

Peter, a user, cannot browse on the intranet to a particular web server by using the servername given to him by the administrator. Peter 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.

Correct Answer: A

Explanation:
Domain Name System or DNS is use to translate a name into IP address. If the DNS server is not configured correctly, it will not be able to provide translation. http://www.howstuffworks.com/dns.htm