Which three elements must be used when you configure a router interface for VLAN trunking? (Choose three.)
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A. B. C. D. E. F.Explanation
To configure a router interface for VLAN trunking, you need to use the following three elements:
B. One IP network or subnetwork for each subinterface: When configuring VLAN trunking, each VLAN is associated with a different network or subnetwork. Therefore, each subinterface must be configured with a unique IP address that corresponds to the associated VLAN.
D. Subinterface encapsulation identifiers that match VLAN tags: To enable VLAN trunking, the subinterfaces on the router must be configured to recognize and process VLAN tags. This is done by configuring the subinterfaces with encapsulation identifiers that match the VLAN tags used on the network.
E. One subinterface per VLAN: Each VLAN should be associated with a unique subinterface on the router. This allows the router to process traffic from each VLAN separately, and to route traffic between VLANs.
In summary, when configuring a router interface for VLAN trunking, you need to assign each VLAN to a unique subinterface, configure each subinterface with a unique IP address, and configure the subinterfaces with encapsulation identifiers that match the VLAN tags used on the network.