CompTIA A+ 220-802

Answer: C - Installing an anti-virus suite will only work effectively if you practice all of the above, except installing a third-party firewall program.

Key Takeaway: Windows comes with a Firewall installed, and many anti-virus programs come with their own firewalls, so installing a third party firewall is not necessary. Updating .dat files, which are the virus-scan data files, responsible for letting the antivirus program know which viruses to look for, is important. You must keep the OS up-to-date with patches so outside threats have less of a chance of getting into your system. The number one cause of infections is due to social engineering, where a program tricks the user into allowing it access; thus, educating yourself on potential threats is a must.