How is a dynamic vNIC allocated?

A.
Dynamic vNICs are assigned to VMs in vCenter.

B.
Dynamic vNICs can only be bound to the service profile through an updating template.

C.
Dynamic vNICs are bound directly to a service profile.

D.
Dynamic vNICs are assigned by binding a port profile to the service profile.

Explanation:
The dynamic vNIC connection policy determines how the connectivity between VMs and dynamic
vNICs is configured. This policy is required for Cisco UCS domains that include servers with VIC
adapters on which you have installed VMs and configured dynamic vNICs.
Each dynamic vNIC connection policy includes an Ethernet adapter policy and designates the number
of vNICs that can be configured for any server associated with a service profile that includes the
policy.
For VM-FEX that has all ports on a blade in standard mode, you need to use the VMware adapter
policy.
For VM-FEX that has at least one port on a blade in high-performance mode, use the
VMwarePassThrough adapter policy or create a custom policy. If you need to create a custom policy,
the resources provisioned need to equal the resource requirements of the guest OS that needs the
most resources and for which you will be using high-performance mode.

http://www.cisco.com/c/en/us/td/docs/unified_computing/ucs/sw/vm_fex/vmware/gui/config_gui
de/b_GUI_VMware_VM-FEX_UCSM_Configuration_Guide/b_GUI_VMware_VMFEX_UCSM_Configuration_Guide_chapter_010.html