You cannot reach a Web site on the Certkiller .com intranet but you can ping the Web server by
host name. What is the probable cause of the problem?

A.
HTTP on the workstation is down.

B.
The DHCP server is down.

C.
The DNS server is down.

D.
Web Server is down.

Explanation:
Web browsers use HTTP to access web sites. If HTTP is down or port 80, which is used for HTTP
traffic, is blocked, you won’t be able to access the intranet Web site.
Incorrect Answers:
B: DHCP is responsible for automating the assignment of IP configurations to computer systems
on a TCP/IP network. If DHCP was down, we would not be able to access the server at all.
C: DNS is used to provide host name to IP Address translation. If we can ping to the host name
then there can be no problem with DNS.
D: The ping command is used to test connectivity to a remote host. If the Web server is down, ping
will not be successful.References:David Groth and Toby Skandier, Network+ Study Guide (4th
Edition), Sybex, Alameda CA, 2005, pp. 117, 136-144, 184.