A router receives information about network 192.168.10.0/24 from multiple sources. What will the router consider the most reliable information about the path to that network?

Question:
A router receives information about network 192.168.10.0/24 from multiple sources. What will the router consider the most reliable information about the path to that network?

• a directly connected interface with an address of 192.168.10.254/24
• a static route to network 192.168.10.0/24
• a RIP update for network 192.168.10.0/24
• an OSPF update for network 192.168.0.0/16
• a default route with a next hop address of 192.168.10.1
• a static route to network 192.168.10.0/24 with a local serial interface configured as the next hop

Explanation: When there is more than one way to reach a destination, it will choose the best one based on a couple of things. First, it will choose the route that has the longest match; meaning the most specific route. So, in this case the /24 routes will be chosen over the /16 routes. Next, from all the /24 routes it will choose the one with the lowest administrative distance. Directly connected routes have an AD of 1 so this will be the route chosen.

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