A digital network existing inside a managed switch's memory is known as what?

The term used to describe a digital network that exists inside a managed switch's memory is a Virtual Local Area Network, commonly referred to as VLAN. A VLAN allows network administrators to create separate, isolated networks within the same physical switch infrastructure, enhancing network management and security. By segmenting a network into different VLANs, devices within the same VLAN can communicate with each other while being separated from devices in other VLANs, even if they are connected to the same physical switch.

The benefits of VLANs include improved network performance, easier management, and increased security, as it limits the broadcast domains and reduces unnecessary traffic. This capability is particularly valuable in environments where different departments or user groups require distinct networking requirements. Implementing VLANs allows for flexibility and efficiency within a network setup.

In contrast, while the other terms mentioned refer to different types of networks—VPN (Virtual Private Network) focuses on secure communications over public networks, LAN (Local Area Network) describes a network limited to a small geographic area, and WAN (Wide Area Network) covers much larger distances connecting multiple LANs—none of these concepts specifically pertain to the functionality of managing isolated networks within the memory of a switch, which is the defining feature of a VLAN.