Nokia Certified Network Professional – IP/MPLS Services — Question 39

What is the block that converts the colorless (or black and white) client signal to a specific optical channel in a WDM system?

Answer options

• A. Wavelength router (WR)
• B. Optical transponder (OT)
• C. Static filter device (SFD)
• D. Dispersion compensation module (DCM)

Correct answer: B

Explanation

The Optical transponder (OT) is responsible for converting the client signal to the appropriate optical channel in a WDM system, making it the correct answer. The Wavelength router (WR) is used for directing wavelengths, the Static filter device (SFD) filters wavelengths but does not perform signal conversion, and the Dispersion compensation module (DCM) addresses signal distortion rather than signal conversion.