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Virtual Local Area Connections In this lesson, we use a series of examples to define and demonstrate the concept of what a virtual local area connection (VLAN) is and how it differs from other local area network infrastructures. You'll learn the strategic and network administration benefits of switch+port assignments for network resources and why it's an important broad function to correctly segment nodes to specific LAN on the network. You'll also learn how to logically separate and create two or more virtual LANS inside the same (single) physical device.