Match each route type to its description.

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How to think about this question

Routing in Cisco networks involves several route types, each with distinct sources and behaviors that influence how routers build and maintain their routing tables. Connected routes are automatically installed when an interface is configured with an IP address and is operational; these routes represent directly attached networks. Static routes are manually configured by network administrators to specify explicit paths to destinations, offering control but requiring manual updates. Dynamic routes are learned through routing protocols like OSPF, EIGRP, or RIP, which enable routers to exchange topology information and automatically adapt to network changes. Default routes serve as a catch-all path used when no specific route matches a destination IP address, typically pointing to a next-hop router or exit interface for unknown networks. The decision process for route selection in Cisco routers relies on route source and administrative distance. Connected routes have the lowest administrative distance (0), making them preferred over static (default 1) and dynamic routes (varying by protocol). Static routes provide predictable routing paths but require manual maintenance. Dynamic routing protocols calculate metrics based on factors like bandwidth, delay, or hop count to select the best path. Default routes are used only when no other more specific route exists, ensuring traffic destined for unknown networks is forwarded appropriately. Understanding these distinctions is critical for troubleshooting and designing resilient networks. A common exam trap is confusing the source and behavior of route types, such as assuming static routes are learned dynamically or that default routes override connected routes. In practice, connected routes always take precedence due to their administrative distance. Misinterpreting route types can lead to incorrect troubleshooting steps, like checking routing protocols when a connected interface is down. Additionally, default routes do not replace specific routes but act as fallbacks. Recognizing these behaviors helps avoid misconfiguration and ensures accurate interpretation of routing tables during the CCNA exam and real-world scenarios.

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