Various hypervisor guests are configured to use different VLANs in the same virtualization environment through
which of the following?

A.
Virtual router

B.
Virtual firewall

C.
NIC teaming

D.
Virtual switch

Explanation:
https://technet.microsoft.com/en-us/windows-server-docs/compute/hyper-v/get-started/create-a-virtual-switchfor-hyper-v-virtual-machines