Certified Ethical Hacker (CEH v13) — Question 109

Mike, a security engineer, was recently hired by BigFox Ltd. The company recently experienced disastrous DoS attacks. The management had instructed Mike to build defensive strategies for the company's IT infrastructure to thwart DoS/DDoS attacks. Mike deployed some countermeasures to handle jamming and scrambling attacks.
What is the countermeasure Mike applied to defend against jamming and scrambling attacks?

Answer options

• A. Allow the transmission of all types of addressed packets at the ISP level
• B. Disable TCP SYN cookie protection
• C. Allow the usage of functions such as gets and strcpy
• D. Implement cognitive radios in the physical layer

Correct answer: D

Explanation

The correct answer is D because cognitive radios can dynamically adapt their transmission and reception parameters to mitigate jamming and scrambling attacks. Options A and B involve actions that would not enhance security against these types of attacks, while option C refers to functions that can introduce vulnerabilities rather than provide protection.