What will the router consider the most reliable information about the path to that network?

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

View Answer

Answer: E

Explanation:

What Is Administrative Distance?

http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a0080094195.shtml

Select the Best Path

Administrative distance is the first criterion that a router uses to determine which routing protocol to use if two protocols provide route information for the same destination. Administrative distance is a measure of the trustworthiness of the source of the routing information. Administrative distance has only local significance, and is not advertised in routing updates.

Note: The smaller the administrative distance value, the more reliable the protocol. For example, if a router receives a route to a certain network from both Open Shortest Path First (OSPF) (default administrative distance – 110) and Interior Gateway Routing Protocol (IGRP) (default administrative distance – 100), the router chooses IGRP because IGRP is more reliable. This means the router adds the IGRP version of the route to the routing table.