VLANs enable a single physical LAN segment to be further segmented so that groups of ports are isolated from one another as if they were on physically different segments.
________ is the standard.

A.
802.1Q

B.
801.2Q

C.
802.2Q

D.
801.1Q

Explanation:

VLANs enable a single physical LAN segment to be further segmented so that groups of ports are isolated from one another as if they were on physically different segments.
802.1Q is the standard.