The reason for regional structure division in OSPF network is: In a small network, the structure of router is not complicated, it is easy to identify routes to different destinations. However, in large What are two drawbacks of implementing a link-state routing protocol? (Choose two.)
A. the high volume of link-state advertisements in a converged network
B. the large size of the topology table listing all advertised routes in the converged network
C. the sequencing and acknowledgment of link-state packets
D. the high demand on router resources to run the link-state routing algorithm
E. the requirement for a hierarchical IP addressing scheme for optimal functionality
Answer: D,E