The simplest, most reliable method of protecting against viruses is to use?

• A. Firewall configurations only
• B. Regular backups
• C. Never connect to the internet
• D. Proven anti-virus software

Answer: (D)

Having a proven anti-virus program is the simplest, most reliable way to guard against viruses because it actively detects and blocks malware as it tries to run. Real-time scanning checks downloads, email attachments, and programs, and it can quarantine or remove threats before they cause harm. Regular updates to the virus definitions keep protection current against new viruses, which is essential since threats evolve quickly.

Firewalls help block unauthorized access, but they don’t catch every malware executable or malicious script that can slip in through legitimate channels. Regular backups are vital for recovery after an infection, but they don’t prevent the malware from infecting the system in the first place. Never connecting to the internet eliminates exposure in theory, but it’s impractical for normal use. So, using proven antivirus software provides the most effective single defense among the options given.