Refer to the exhibit. Communication between the VLANs is not occurring. What could be the issue?
- The wrong port on the router has been used.
- The Gi1/1 switch port is not in trunking mode.
- A duplex issue exists between the switch and the router.
- Default gateways have not been configured for each VLAN.
Explanation: The subinterfaces could not have an IP address unless the encapsulation mode had been configured. When a duplex issue exists, communication can still occur, but it is at a slower than optimum rate.