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思科认证考试

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Click the Exhibit button. The exhibit shows a 15454/15216 DWDM system and alarm indications.  What are two possible sources of trouble shown in the system?()

  • A、 fiber failure between Sites A and D
  • B、 EDFA failure at Site A (clockwise direction)
  • C、 EDFA failure at Site C (clockwise direction)
  • D、 15216 multiplexer at Site A (counter-clockwise direction)
  • E、 OADM pass-through (West "OUT") failure at site D (clockwise)
  • F、 wavelengths 1 and 3 transmitter failures at Site A (clockwise direction)
正确答案:A,B
答案解析:
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