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Free H31-311 Exam Braindumps (page: 11)

Page 10 of 44
PDF with 186 Questions

The clock unit can access an external clock source as the timing signal source of the system only through the external clock interface. In addition, it can output the processed clock and provide the clock source for other devices that require timing.

  1. TRUE
  2. FALSE

Answer(s): B



Which of the following is the multiplexing mode of SDH?

  1. Flexible mapping
  2. Asynchronous multiplexing
  3. Flexible mapping and asynchronous multiplexing
  4. Flexible mapping and synchronous multiplexing

Answer(s): D



Which of the following statements about the optical-layer interfaces OTM-n.m and OTM-nr.m of OTN is incorrect?

  1. n indicates the number of wavelengths carried by the maximum capacity.
  2. m indicates the rate. The value can be 1, 2, or 3.
  3. r indicates OTM without the OSC function.
  4. OTM-nr.m with OSC signals is OTM-n.m.

Answer(s): B



The frame structure of 0DU4 is four times that of ODU1.

  1. TRUE
  2. FALSE

Answer(s): B






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