What are three benefits of the Cisco Adaptive Threat Defense strategy？ （Choose three.） （）

• A、 using QoS techniques such as Traffic Policing to rate limit suspected traffic to prevent DoS attacks
• B、 automatic reconfiguration s of the security devices based on current security threats
• C、 containment and control of security threats
• D、 application security
• E、 anti-x defense F- virtual firewall