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What information about the interfaces on the Main_Campus router is true?

Refer to the exhibit.

What information about the interfaces on the Main_Campus router is true?
A .  The LAN interfaces are configured on different subnets.
B .  Interface FastEthernet 0/0 is configured as a trunk.
C .  The Layer 2 protocol of interface Serial 0/1 is NOT operational.
D .  The router is a modular router with five FastEthernet interfaces.
E .  Interface FastEthernet 0/0 is administratively deactivated.

Answer: B

Explanation:Interface fa0/0 breaks into sub-interfaces and Main_Campus router is connected with switch via fa0/0 .Subinterfaces configured with different subnet mask so the seem switch has multiple vlans and allows communication between these VLAN’s. For routing and inter-vlan we need to configure a trunk port. So B will be the correct answer.

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