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问题

In SDH, what is&#819


In SDH, what is the name of the embedded Data Communication Channel (DCC) in bytes D1-D3?()

  • A the DCC-E
  • B the DCC-M
  • C the DCC-R
  • D the Line DCC
  • E the Section DCC
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分类:CCNP(642-321)题库
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