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问题

Which Frame Relay feature is responsib


Which Frame Relay feature is responsible for transmitting keepalives to ensure that the PVC does not shut down because of inactivity?()

  • A DLCI
  • B BECN
  • C FECN
  • D LMI
  • E CIR
  • F DE
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分类:CCNA(640-801)题库