Refer to the exhibit. A network engineer configures OSPF and reviews the router confguration. Which interface or interfaces are able to establish OSPF adjacency?

A. GigabitEthernet0/1 and GigabitEthemnet0/1.40
B. only GigabitEthernet0/0
C. GigabitEthernet0/0 and GigabitEthernet0/1
D. only GigabitEthernet0/1

Refer to the exhibit. A network engineer configures OSPF and reviews the router confguration. Which interface or interfaces are able to establish OSPF adjacency?

A. GigabitEthernet0/1 and GigabitEthemnet0/1.40
B. only GigabitEthernet0/0
C. GigabitEthernet0/0 and GigabitEthernet0/1
D. only GigabitEthernet0/1

Correct Answer: B

“No Hellos (Passive Interface)”. If you configure passive interface then the network on the interface will still be advertised but it won’t send any OSPF hello packets. This way it’s impossible to form an OSPF neighbor adjacency.