After repairing a computer infected with malware, a technician determines that the web browser fails to go to
the proper address for some sites. Which of the following should be checked?

A.
Server host file

B.
Subnet mask

C.
Local hosts file

D.
Duplex settings

Explanation:
The local hosts file is a text file that contains hostname-to-IP address mappings. By default, host to IP address
mappings that are configured in the Hosts file supersede the information in DNS. If there is an entry for a
domain name in the Hosts file, then the server will not attempt to query DNS servers for that name. Instead, the
IP address that is configured in the Hosts file will be used. If the IP address corresponding to a name changes
and the Hosts file is not updated, you may be unable to connect to the host.