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Exam 200-120 Question id=80 IP Routing Technologies



R1#sh run | section router eigrp router eigrp 10 network 172.16.1.0 network 10.1.1.0 auto-summary

R2#sh run | section router eigrp router eigrp 10 network 192.168.100.0 network 10.1.1.0 network 10.1.2.0 auto-summary

R3#sh run | section router eigrp router eigrp 10 network 192.168.1.0 network 10.1.2.0 auto-summary

R4#sh run | section router eigrp router eigrp 10 network 192.168.100.0

Which EIGRP routes will be present in the router R4's routing table?

A. 192.168.1.0/24
B. 10.1.2.0/30
C. 10.1.1.0/30
D. 172.16.1.0/24
E. 192.168.100.0/24
F. 10.1.0.0/16
G. 10.0.0.0/8
H. 172.16.0.0/16
I. 192.168.100.0/30

EIGRP performs an auto-summarization each time it crosses a border between two different major networks. EIGRP will check if you have any subnets that fall within the range of your network command(s) and if so, it will advertise the classful A, B or C network to its neighbors. It will only summarize routes from subnets on its own interfaces, not the ones you learn from other routers.