QuestionQ995

IP Connectivity

R1 has learned route 192.168.12.0/24 through IS-IS, OSPF, RIP, and Internal EIGRP. Under normal operating conditions, which routing protocol is placed in the routing table?

  • A IS-IS
  • B Internal EIGRP
  • C RIP
  • D OSPF
Explanation

When the same destination prefix is learned from different routing protocols, the router selects the source with the lowest administrative distance. By default, Internal EIGRP has an administrative distance of 90, which is lower than OSPF at 110, IS-IS at 115, and RIP at 120. Therefore, the Internal EIGRP route is the one installed.

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