Advanced Networking Administrator Test Prep

Answer: D - 802.1Q is the IEEE standard for VLAN trunking. Newer Cisco and Juniper switches use 802.1Q as the tagging method.

Key Takeaway: VLAN Trunking Protocol (VTP) is a Cisco proprietary Layer 2 messaging protocol that manages the addition, deletion, and renaming of Virtual Local Area Networks (VLAN) on a network-wide basis. IEEE 802.1Q, or VLAN Tagging, is networking that allows multiple bridged networks to transparently share the same physical network link without leakage of information between networks.