Which Optical Mux/Demux Board Statement Is False?
Short answer
D The false statement is D: the UITL board multiplexes and demultiplexes 75 GHz and 150 GHz spacing signals, not 50 GHz and 100 GHz.
Question
Key Takeaways
It tests whether you can distinguish ITL 50/100 GHz boards from UITL 75/150 GHz boards, with the trap being a plausible but swapped spacing assignment.
This question tests Huawei WDM optical multiplexer and demultiplexer board specifications, especially channel spacing. The false statement is D, because UITL uses 75/150 GHz spacing rather than 50/100 GHz.
Common mistake: The most plausible wrong selection is A, because “even-wavelength” sounds too specific; it is actually a valid TNG2D6001 characteristic, while D misassigns 50/100 GHz spacing to the UITL board.
Expert Analysis
The tempting wrong pick: option A Option A looks like the best candidate for the “false” statement because it adds an oddly specific detail: one multiplexed-wavelength signal is split into “a maximum of 60 even-wavelength optical signals.” A test-taker may suspect that “even-wavelength” is fabricated, or that a demultiplexer should output a mix of odd and even channels. That suspicion is the trap. The TNG2D6001 is a 60-channel demultiplexer board associated with even-wavelength channels, so the sentence is consistent with the board’s naming and capacity. It satisfies the question’s form—it is a concrete mux/demux claim—but it does not contain the actual error.
Where the real error sits: option D The UITL board is not the 50/100 GHz board. Comments on this question make the distinction explicit: the ITL board is designed for standard 50 GHz or 100 GHz channel spacing, while the UITL board handles 75 GHz or 150 GHz spacing. Option D swaps those roles, so it is the false statement. The familiar 50/100 GHz values are exactly why D sounds plausible; they are common WDM spacings, but they do not belong to UITL.
Checking the remaining board claims Option B describes TNG2M60V as a 60-channel multiplexer with VOA in the Super C band, and option C describes TNG2UM40 as a 40-channel multiplexer for the Super C band; both fit the board naming and capacity conventions. Option A remains true despite its unusual wording. The answer is therefore D.
Exam Strategy
For board-specification questions, map each board acronym to its unique differentiator—spacing, channel count, VOA, or band—before reading the statements. Treat familiar values such as 50/100 GHz as decoys unless the exact board family matches. Because this is a “false” question, verify every option instead of stopping at the first statement that looks unusual.
Frequently Asked Questions
Why is option D false when 50/100 GHz are common WDM spacings?
What is the difference between ITL and UITL boards?
Does TNG2D6001 really demultiplex 60 even-wavelength signals?
Community Votes
100% of anonymous learners picked answer D. Votes are pick records left by other test-takers — they are not the verified answer.
Discussion 2 contributions
Compiled from public community threads and reader submissions, lightly edited for clarity. Handles and vote tallies are shown as recorded, and comments reflect the views of individual contributors.
From public community threads 2
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Enoch100 👍 1 Answered DD is the answer please. ITL Board: Designed to multiplex and demultiplex optical signals using a standard 50 GHz or 100 GHz channel spacing.UITL Board: Designed to handle wider or alternative configurations, multiplexing and demultiplexing signals at 75 GHz or 150 GHz channel spacing
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Thabelo100 👍 1 Answered DThe UITL board multiplexes and demultiplexes signals with 75 GHz spacing and signals with 150 GHz spacing.
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