Refer to the exhibit. A network administrator is configuring RT1 for inter-VLAN routing. The switch is configured correctly and is functional. Host1, Host2, and Host3 cannot communicate with each other. Based on the router configuration, what is causing the problem?
A) Interface Fa0/0 is missing IP address configuration information.
B) IP addresses on the subinterfaces are incorrectly matched to the VLANs.
C) Each subinterface of Fa0/0 needs separate no shutdown commands.
D) Routers do not support 802.1Q encapsulation on subinterfaces.

The best answer is "B"

IP addresses on the subinterfaces are incorrectly matched to the VLANs.

Explanation:

RT1 for inter-VLAN routing:

VLANs are majorly used to divide broadcast domains in a LAN environment. Whenever hosts in one VLAN needs to interact with hosts in another VLAN, the traffic must be routed between them. This is referred to as an Inter-VLAN routing.

IP address: An Internet Protocol address and it's more like a numerical label assign to each device connected to a computer network.

This interaction cannot be established if the IP address on the subinterfaces are incorrectly matched to the VLANs.

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