which WAN technology?

seenagape

10 years ago

Dense wavelength division multiplexing (DWDM) is a fiber-optic transmission technique that
employs light wavelengths to transmit data parallel-by-bit or serial-by-character. DWDM can be
found in which WAN technology?

A.
SONET

B.
ADSL

C.
ISDN

D.
T1