Refer to the exhibit. AJI links are P2P Layer 3. A high availability application is synchronizing data between host A and host B. To increase chance of delivery the same data is sent twice from host A

EIGRP with feasible successors uses the DUAL algorithm to pre-compute loop-free backup routes before any failure occurs, enabling instantaneous failover without triggering full reconvergence. When data is sent simultaneously on two redundant paths and a network failure disrupts one path, EIGRP promotes the feasible successor immediately, ensuring the redundant data stream reaching host B is not interrupted and no data loss occurs.

BFD rapidly detects link failures but does not itself provide redundant routing paths - it must notify a routing protocol to reconverge, introducing delay that can cause data loss.

IP Fast Reroute provides loop-free alternates for fast local repair but coverage depends on topology and does not guarantee pre-computed backups for all failure scenarios.

Static routes have no mechanism to automatically detect or react to topology failures, requiring manual intervention to restore connectivity after a failure.