Your network contains an Active Directory domain named contoso.com. The domain contains a member server
named Server1. Server1 runs Windows Server 2012 R2 and has the Hyper-V server role installed.
You create an external virtual switch named Switch1. Switch1 has the following configurations:
Connection type: External network
Single-root I/O virtualization (SR-IOV): Enabled
Ten virtual machines connect to Switch1.You need to ensure that all of the virtual machines that connect to Switch1 are isolated from the external
network and can connect to each other only. The solution must minimize network downtime for the virtual
machines.
What should you do?

A.
Remove Switch1 and recreate Switch1 as an internal network.

B.
Change the Connection type of Switch1 to Private network.

C.
Change the Connection type of Switch1 to Internal network.

D.
Remove Switch1 and recreate Switch1 as a private network.

Explanation:
You cannot change the type of vswitch from external to private when SR-IOV is enabled at vswitch creation –
>you need to recreate the vswitch.