Refer to the exhibit.
A network engineer configures OSPF and reviews the router configuration.
Which interface or interface or interface are able to establish OSPF adjacency?
A . GigabitEthemet0/1 and GigabitEthernet0/1.40
B . only GigabitEthernet0/1
C . only GigabttEthernet0/0
D . Gigabit Ethernet0/0 and GigabitEthemet0/1
Answer: B
Explanation:
OSPF adjacency can only be established on the GigabitEthernet0/1 interface. In the router configuration, OSPF is enabled on GigabitEthernet0/1, as indicated by the line protocol being up. The other interfaces, including GigabitEthernet0/0 and GigabitEthernet0/1.40, cannot establish OSPF adjacency due to reasons such as area mismatch or network type discrepancies.
References: = Implementing and Operating Cisco Service Provider Network Core Technologies
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