Section 6: Virtual Local Area Network (VLAN)

Question 1

VLAN

Answer 1

Virtual Local Area Network - Different logical networks sharing the same physical hardware. Improves security and efficiency.

Question 2

VLAN Trunking Protocol

Answer 2

802.1q -
▪ Multiple VLANs transmitted over the same physical cable
▪ VLANs are each tagged with 4-byte identifier
- Tag Protocol Identifier (TPI)
- Tag Control Identifier (TCI)
▪ One VLAN is left untagged (VLAN 0)
- Called the Native VLAN