Which of the following countermeasures should be implemented to mitigate network attacks that can render a network useless?

A DevOps engineer wants to provide secure network services to an IoT/cloud solution.

Which of the following countermeasures should be implemented to mitigate network attacks that can render a network useless?
A . Network firewall
B. Denial of Service (DoS)/Distributed Denial of Service (DDoS) mitigation
C. Web application firewall (WAF)
D. Deep Packet Inspection (DPI)

Answer: B

Explanation:

Reference: https://www.cloudflare.com/learning/ddos/what-is-a-ddos-attack/#:~:text=A%20distributed%20denial%2Dof%2Dservice,a%20flood%20of%20Internet %20traffic