A small company asks you to design a VDC in each of their two data centers, using stretched
VLANs and native Fibre Channel extension to interconnect the environments. The data centers
are located 30 km apart. After inquiring with the local service providers, you find that only two
strands of dark fiber are available.
Which distance networking technology is the most appropriate?

A.
CWDM

B.
DWDM

C.
Dark Fiber

D.
MPLS