A switch has been configured with PVLANs. With what type of PVLAN port should the default
gateway be configured?

A.
isolated

B.
promiscuous

C.
community

D.
primary

E.
trunk

Explanation:
Promiscuous: The switch port connects to a router, firewall, or other common gateway device.
This port can communicate with anything else connected to the primary or any secondary VLAN.
In other words, the port is in promiscuous mode, in which the rules of private VLANs are ignored.
Reference: Configuring Private VLANs
(http://www.cisco.com/en/US/docs/switches/lan/catalyst4500/12.2/31sga/configuration/guide/pvlans.html)