A customer reports that after a technician cleaned up a rogue antivirus program, the
customer cannot browse the web. Which of the following should the technician check to
resolve the situation?

A.
Browsing history

B.
Firewall settings

C.
User privileges

D.
Proxy settings

Explanation:

Reference:
http://windows.microsoft.com/en-us/windows-vista/change-proxy-settings-in-internet-explorer