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What are VLANs and how are they used in networking?

VLANs, or Virtual Local Area Networks, are used in networking to segment a single physical network into multiple logical networks. This segmentation helps in improving network performance, security, and manageability.

Each VLAN operates as a separate broadcast domain, allowing network administrators to control and isolate traffic flow within the network. VLANs are commonly used in large networks to group devices based on their function, department, or security requirements.

By configuring VLANs, organizations can efficiently manage network traffic, reduce congestion, enhance network security by separating sensitive data, and simplify network infrastructure maintenance.

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