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Refer to the exhibit: An engineer is preparing to implement data plane security configuration. Which statement about this configuration is true?
Correct Answer: B
Router 1 is the trigger router in a Remote Triggered Black Hole (RTBH) implementation. In the configuration provided, Router 1 has a static route to null0 for network 192.168.1.0/24 with a tag of 1, which is used to drop traffic destined to this network, effectively mitigating DDoS attacks. The route-map "ddos" matches this tag and sets local preference and community accordingly. The BGP process redistributes this static route based on the "ddos" route-map, signaling other routers in the network to drop traffic destined for the attacked network. References: Implementing and Operating Cisco Service Provider Network Core Technologies (SPCOR) - RTBH section1.