Which of the following two are effective and simple means of employing route summarization within the Enterprise Campus network? (Choose two)
A. A default route (0.0.0.0 /0) advertised dynamically into the rest of the network
B. Route filtering to manage traffic flows in the network, avoid inappropriate transit traffic through remote nodes, and provide a defense against inaccurate or inappropriate routing updates
C. Use manual split horizon
D. Use a structured hierarchical topology to control the propagation of EIGRP queries
E. Open Shortest Path First (OSPF) stub areas
