A router is running three routing processes: RIP, OSPF, and EIGRP, each configured with default
characteristics. Each process learns a route to the same remote network. If there are no static
routes to the destination and none of the routes were redistributed, which route will be placed in
the IP routing table?
A.
the route learned through EIGRP
B.
the route learned through OSPF
C.
the route learned through RIP
D.
the route with the lowest metric
E.
all three routes with the router load balancing
Explanation:
Administrative distance is the feature that routers use in order to select the best
path. Administrative distance defines the reliability of a routing protocol. Each routing protocol is
prioritized in order of most to least reliable (believable) with the help of an administrative distance
value.Lowest Administrative distance will be choose first.EIGRP has 90 , RIP has 120 , OSPF has
110.
Route Source
Default Distance Values
Connected interface
0
Static route
1
Enhanced Interior Gateway Routing Protocol (EIGRP) summary route
5
External Border Gateway Protocol (BGP)
20
Internal EIGRP
90
IGRP
100
OSPF
110Intermediate System-to-Intermediate System (IS-IS)
115
Routing Information Protocol (RIP)
120
Exterior Gateway Protocol (EGP)
140
On Demand Routing (ODR)
160
External EIGRP
170
Internal BGP
200
Unknown*
255
A