Matt, the IT Manager, wants to create a new network available to virtual servers on the same hypervisor,
and does not want this network to be routable to the firewall. How could this BEST be accomplished?

A.
Create a VLAN without a default gateway.

B.
Remove the network from the routing table.

C.
Create a virtual switch.

D.
Commission a stand-alone switch.

Explanation:
A Hyper-V Virtual Switch implements policy enforcement for security, isolation, and service levels.
Incorrect Answers:
A: The default gateway usually connects the internal networks and the Internet. This could result in the
gateway node acting as a proxy server and a firewall. The gateway is also associated with both a router,
and a switch. A router makes use of headers and forwarding tables to determine where packets are sent,
and a switch supplies the actual path for the packet in and out of the gateway. Therefore, a gateway is
necessary.
B: A routing table contains information about the topology of the network immediately around it.
Removing the network from it would prevent the virtual servers from connecting to the network.
D: A standalone switch is able to function independently of other hardware. This would involve cost and
effort. Using a virtual switch is the best option.

https://technet.microsoft.com/en-us/library/hh831823.aspx