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After a redundant route processor failure occurs on a Layer 3 device, which mechanism allows for packets to be forwarded from a neighboring router based on the most recent tables?
Correct Answer: D
Nonstop Forwarding (NSF) is designed to maintain packet forwarding even when there is a failure in the route processor. When a redundant route processor fails, NSF works with Stateful Switchover (SSO) to ensure that the current forwarding state and routing tables are synchronized between the active and standby route processors. This synchronization allows the standby processor to immediately take over without any loss of packets. NSF ensures that the neighboring routers continue to forward packets based on the most recent tables without needing to reconverge. References: The Implementing and Operating Cisco Service Provider Network Core Technologies (SPCOR) course