A network engineer reviews a Cisco router's routing table and notices a route learned via a dynamic routing protocol that uses the Diffusing Update Algorithm (DUAL) for route computation. Which routing protocol code is associated with this route in the routing table?
O
D
R
S
In the Cisco routing table, the code 'D' represents routes learned via EIGRP (Enhanced Interior Gateway Routing Protocol). EIGRP uses the Diffusing Update Algorithm (DUAL) for efficient and loop-free route computation. The code 'O' represents routes learned via OSPF (Open Shortest Path First), which uses the Dijkstra algorithm. The code 'R' stands for routes learned via RIP (Routing Information Protocol), which is based on distance-vector routing. 'S' indicates a static route manually configured by the administrator.
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