4A0-205: Nokia Optical Networking FundamentalsDemo

By Nokia · Question Mode

QuestionQ76

Basics of SWDM nodes

In a ROADM configuration, which sequence of cards does the signal traverse from the black-and-white client interface toward the optical line span leading to the next adjacent downstream node?

  • A SFD, OT, WR, AMP
  • B WR, SFD, OT, AMP
  • C OT, SFD, WR, AMP
  • D OT, WR, SFD, AMP
Explanation

An OT converts the client-side signal into a DWDM optical channel. The SFD combines that channel into the optical path, the WR directs it to the required ROADM degree, and the AMP boosts the outgoing line signal for transmission to the adjacent node. Nokia’s 1830 PSS optical documentation identifies OT, SFD, WR, and amplifier cards as ROADM components and places ROADM protection between the WR and line driver, consistent with the outgoing order OT → SFD → WR → AMP.

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