Around which three DWDM technologies is the Cisco NCS 2000 Series optimized? (Choose three.)

Question

Options

• AFlex Spectrum
• BSONET/SDH switching
• Cdispersion compensation
• Dcoherent wavelengths
• Etouchless ROADM
• Farrayed waveguide gratings

• A
  91% (20)
• B
  5% (1)
• C
  5% (1)

Explanation

Cisco positions the NCS 2000 Series around three modern DWDM pillars: Flex Spectrum enables flexible-grid channel spacing to maximize fiber capacity beyond fixed 50 GHz grids; coherent wavelengths leverage advanced DSP-based modulation (like DP-QPSK/QAM) for high-capacity, long-haul transport; and touchless ROADM delivers colorless, directionless, contentionless (CDC) switching with software-driven provisioning that eliminates manual fiber patching.

Why the distractors are wrong:

• B (SONET/SDH switching) - Legacy TDM technology; the NCS 2000 can carry such traffic but is not optimized around it - that focus belongs to platforms like the NCS 4000.
• C (dispersion compensation) - Coherent DSPs handle dispersion electronically, making external DCMs largely obsolete; this is a solved problem, not a design pillar.
• F (arrayed waveguide gratings) - AWGs are a passive optical component used in some multiplexing designs, but they are not a defining NCS 2000 technology focus.

Memory tip: Think "FTC" - Flexible, Touchless, Coherent. These three represent the software-defined, next-gen DWDM story Cisco tells with the NCS 2000; the wrong answers (SONET/SDH, DCMs, AWGs) are either legacy, passive, or component-level concepts rather than platform-defining capabilities.

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