The Layer 3 control plane steers traffic toward destinations. Which two techniques offer a more dynamic, flexible, controlled, and secure control plane design in service provider networks? (Choose two.)
C (QoS policy propagation with BGP - QPPB):Allows QoS policies to be dynamically applied based on BGP routing information, integrating policy control into routing decisions.
D (Remote black-holing trigger):Enables dynamic mitigation of attacks (e.g., DDoS) by injecting blackhole routes through BGP to selectively drop malicious traffic upstream.
Other options explained:
A/B/E: Static policy mechanisms that lack dynamic flexibility and responsiveness in modern service provider designs.
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