H31-341_V2.5 · Question #977
The core device of ROADM is the wavelength selective switch (WSS)
The correct answer is A. True. A (True) is correct because the Wavelength Selective Switch (WSS) is indeed the fundamental enabling component of a Reconfigurable Optical Add-Drop Multiplexer (ROADM). A WSS allows individual wavelengths (channels) within a WDM signal to be selectively routed, added, or…
Question
The core device of ROADM is the wavelength selective switch (WSS)
Options
- ATrue
- BFalse
How the community answered
(30 responses)- A83% (25)
- B17% (5)
Explanation
A (True) is correct because the Wavelength Selective Switch (WSS) is indeed the fundamental enabling component of a Reconfigurable Optical Add-Drop Multiplexer (ROADM). A WSS allows individual wavelengths (channels) within a WDM signal to be selectively routed, added, or dropped - giving ROADMs their "reconfigurable" capability without requiring optical-to-electrical conversion.
There are no distractors here since this is a True/False question - B (False) is simply wrong because ROADMs, by definition, depend on WSS technology to perform per-wavelength switching in the optical domain.
Memory tip: Think of the WSS as the "traffic cop" of optical networking - just as a cop directs individual cars, a WSS directs individual wavelengths. The "W" in both WSS and wavelength helps anchor the association: WSS = Wavelength-level control = the heart of ROADM.
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