Which statement best describes a good security countermeasure approach?

Which statement best describes a good security countermeasure approach?

• A. Rely solely on antivirus signature updates
• B. Install multiple antivirus programs simultaneously
• C. Disable firewall to reduce network latency
• D. Use built in security tools: regular scans and firewall active

Answer: (D)

A strong security countermeasure approach relies on layered, active protection rather than relying on a single control. Using built-in security tools—keeping them active and running regular scans—provides ongoing defense and visibility. The firewall helps control what traffic can enter and leave the system, reducing exposure to unauthorized access and helping to limit the spread of any intrusion. Regular scans complement this by detecting malware that could slip past initial defenses and ensuring threats are found and removed promptly. Relying solely on antivirus signature updates is insufficient because new and unknown threats can slip through traditional signature-based detection. Installing multiple antivirus programs at once can cause conflicts, performance problems, and inconsistent protection. Disabling the firewall removes a critical line of defense against network-based attacks and is a poor trade-off for potential latency gains.

A strong security countermeasure approach relies on layered, active protection rather than relying on a single control. Using built-in security tools—keeping them active and running regular scans—provides ongoing defense and visibility. The firewall helps control what traffic can enter and leave the system, reducing exposure to unauthorized access and helping to limit the spread of any intrusion. Regular scans complement this by detecting malware that could slip past initial defenses and ensuring threats are found and removed promptly.

Relying solely on antivirus signature updates is insufficient because new and unknown threats can slip through traditional signature-based detection. Installing multiple antivirus programs at once can cause conflicts, performance problems, and inconsistent protection. Disabling the firewall removes a critical line of defense against network-based attacks and is a poor trade-off for potential latency gains.