Question 76

A multiframe alignment signal is used for multiframe alignment. When some OTUk and ODUk overhead signals need to be transmitted across multiple frames, the MFAS must be used to implement multi-frame alignment.
  • Question 77

    The setting of alarm reversal is port-based.
  • Question 78

    What are the options for the following alarms to be transmitted from upstream to downstream? (Multiple choice)
  • Question 79

    Before dealing with WDM faults, some preparatory work needs to be done. Which of the following items are preparatory work? (Multiple choice)
  • Question 80

    Pointer adjustment is related to which of the following?