Which statement about NPIV is true?
A. NPIV provides a means to assign multiple Fibre Channel IDs to a single N-port.
B. NPIV can be enabled on a per-VSAN basis.
C. NPIV requires a "write erase" and then reload the switch in order to come up into NPIV mode.
D. NPIV is a Cisco proprietary feature and as such works only between two Cisco switches.
E. NPIV must not be enabled on a switch that is also running N-port virtualization.
Correct is A
NPIV allows a Fibre Channel host connection or N-Port to be assigned multiple N-Port IDs or Fibre Channel IDs (FCID) over a single link.
https://www.cisco.com/c/en/us/support/docs/storage-networking/mds-9000-series-multilayer-switches/200127-N-Port-Identifier-Virtualization-NPIV.html
NPIV:
https://en.wikipedia.org/wiki/NPIV