Which technology should a network designer combine with VSS to ensure a loop free topology with optimal convergence time?

A.
Portfast

B.
UplinkFast

C.
RPVST +

D.
Mulitchassis EtherChannel

Explanation:
A Virtual Switching System VSS is network system virtualization technology that pools multiple Cisco ® Catalyst ® 6500 Series Switches into one virtual switch,
increasing operational efficiency, boosting nonstop communications, and scaling system bandwidth capacity to 1.4 Tbps.