802.1Q VLAN identifier space is only 12 bits. The VXLAN identifier space is 24 bits. This doubling in size allows the VXLAN ID space to support 16 million Layer 2 segments -> Answer B is not correct. VXLAN is a MAC-in-UDP encapsulation method that is used in order to extend a Layer 2 or Layer 3 overlay network over a Layer 3 infrastructure that already exists. Reference: https://www.cisco.com/c/en/us/support/docs/lan-switching/vlan/212682-virtual- extensible-lan-and-ethernet-virt.html