An enterprise is requiring Layer 2 traffic isolation between business units that share the same physical networking equipment. Which technology provides the most appropriate solution?
Software Defined Networking
Port security
Network Address Translation
VLANs
Virtual Local Area Networks (VLANs) are the correct solution for this scenario because they specifically provide Layer 2 traffic isolation within the same physical network infrastructure. VLANs create separate broadcast domains within a single physical switch infrastructure, effectively allowing business units to share physical networking equipment while maintaining traffic separation.
The other options represent legitimate networking technologies but are not appropriate for this specific requirement. Network Address Translation (NAT) translates IP addresses but does not provide traffic isolation between systems on the same network segment. Software Defined Networking (SDN) is an approach to network management that enables dynamic, programmatically efficient network configuration but doesn't inherently provide Layer 2 isolation. Port security is a switch feature that restricts which MAC addresses can communicate through specific switch ports but doesn't provide the broader traffic isolation needed between business units.
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