A junior engineer is implementing one of your optical designs and asks about CWDM (Coarse Wavelength Division Multiplexing). Which two features describe CWDM? (Choose two.)

A junior engineer is implementing one of your optical designs and asks about CWDM (Coarse Wavelength Division Multiplexing). Which two features describe CWDM? (Choose two.)
A . typically used over long distances, but requires optical amplification
B . allows up to 32 optical carriers to be multiplexed onto a single fiber
C . shares the same transmission window as DWDM
D . uses the 850-nm band
E . Passive CWDM devices require no electrical power.

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Answer: CE