A network administrator needs to logically separate traffic between different departments within an organization using a single physical network infrastructure. Which technology would be most appropriate to achieve this segmentation?
Subnetting
Network Address Translation (NAT)
Virtual Private Networks (VPNs)
Virtual Local Area Networks (VLANs)
Virtual Local Area Networks (VLANs) are the most appropriate technology for logically separating traffic between departments on a single physical network infrastructure. VLANs work at Layer 2 of the OSI model and allow network administrators to create separate broadcast domains, essentially creating multiple virtual networks on the same physical switches and cabling. This provides traffic isolation, improved security, and better network management without requiring separate physical networks for each department.
While VPNs provide encrypted tunnels between networks, they are typically used for remote access or site-to-site connections rather than internal network segmentation. Subnetting operates at Layer 3 and involves IP addressing schemes but doesn't provide the same level of traffic isolation at the data link layer. Network Address Translation (NAT) is used to translate IP addresses and doesn't provide network segmentation capabilities.
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