VLANs divide physical network into logical segments for better performance. Users can be allocated to logical areas without noticing changes. VLANs enable data traffic restriction between different network segments
PAN covers single person's area up to 10 meters. LAN serves small areas like houses and companies. MAN covers medium-range areas like campuses and cities. WAN spans large geographical areas and connects smaller networks
VLANs divide large networks into distinct groups for remote device communication. VLANs prevent broadcast congestion and improve network security. VLANs were developed to address LAN limitations in remote work environments
Command history allows viewing and reusing previously entered commands. Switch boots by loading boot loader after POST. Minimum Ethernet frame size is 64 bytes. Cut-through switching reduces latency by forwarding frames immediately
VLAN is a partitioned broadcast domain at data link layer (OSI layer 2). VLANs behave like virtual switches sharing physical structure while maintaining logical separation. VLANs work by applying tags to network frames for traffic segmentation
Network configuration can be done via interfaces file, NetworkManager, Systemd, or Netplan. Most network setup is done in /etc/network/interfaces for basic configurations. New systems use hardware-based interface names like eno0 instead of eth0