A) Explanation:
Solution:-
R1
Int loopback0
Ip ospf 10 area 0
Int loopback10
Ip ospf network point-to-point
Int loopback20
Ip ospf network point-to-point
Int loopback30
Ip ospf network point-to-point
Router ospf 10
Area 1 range 172.16.100.0 255.255.252.0
Copy run start
Verification: -
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