CertNexus Certified Cyber Secure Coder (CSC) — Question 8

A web server is under a denial of service (DoS) attack. The administrator reviews logs and creates an access control list (ACL) to stop the attack. Which of the following technologies could perform these steps automatically in the future?

Answer options

• A. Intrusion prevention system (IPS)
• B. Intrusion detection system (IDS)
• C. Blacklisting
• D. Whitelisting

Correct answer: A

Explanation

The correct answer is A, as an Intrusion Prevention System (IPS) can automatically detect and respond to threats in real-time, including creating ACLs to block malicious traffic. An Intrusion Detection System (IDS) (option B) only detects threats but does not take action on its own. Blacklisting (option C) and whitelisting (option D) are methods for controlling access but do not inherently provide automatic response capabilities against ongoing attacks.