Which type of routes are learned and maintained in a router's routing table from other internetwork routers using network layer protocols such as RIP, IGRP, OSPF, EIGRP, and BGP?

• A. Dynamic routes
• B. Static routes
• C. Default routes
• D. Local routes

Answer: (A)

Routes learned from other networks through routing protocols are dynamic routes. Protocols like RIP, IGRP, OSPF, EIGRP, and BGP are designed to share information about which networks are reachable and the best paths to them. Because they continuously exchange updates and adjust to changes—such as a link going down or coming back up—the router’s routing table stays current without manual reconfiguration. Static routes, in contrast, are fixed and configured by an administrator. Default routes are fallback paths for unknown destinations, and local routes refer to directly connected networks learned from the router’s own interfaces.