LANs - A group of devices in the same broadcast domain, Virtual LANs - A group of devices in the same broadcast domain, Separated logically instead of physically, VPNs - Encrypted data traversing a public network, Concentrator - Encyption/decryption access device, integrated into firewall, Client-to-Site- VPNs - On-demand access from a remote device,

Comptia A+ 1101 2.6 VLANs and VPNs

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