A technician who separated two departments using VLANs now discovers that the VLANs cannotcommunicate with each other.Which of the following does the technician need to enable communication between the VLANs?（）A. Port spanningB. VLAN concentratorC. FirewallD. Router
A technician who separated two departments using VLANs now discovers that the VLANs cannotcommunicate with each other.Which of the following does the technician need to enable communication between the VLANs?（）
A. Port spanning
B. VLAN concentrator
C. Firewall
D. Router
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