Final answer:
Dynamic routing's key issues include route discovery, routing table maintenance, route selection, and scalability, each essential to adapt to network changes effectively.
Step-by-step explanation:
Four Key Issues in Dynamic Routing
Dynamic routing, which adjusts to network topology or traffic changes, involves several key issues. The first issue is route discovery, which involves determining the best paths between nodes on a network. The next issue is routing table maintenance, necessary to keep the routing tables updated with the most current route information. Then, route selection, is critical, as it involves choosing the most efficient path from multiple possibilities. Finally, scalability is an issue, as the routing protocol must function efficiently even as the network grows. Each of these issues plays a crucial role in ensuring that dynamic routing protocols, such as OSPF or BGP, effectively manage the continuous changes occurring within a network.