Huawei H31-311 Online Practice Questions and Exam Preparation

Huawei H31-311 Online Questions & Answers

• Question 161:

  Which of the following ESC types are classified based on their implementation principles? (Choose two)

  A. Insert DCC
  B. Fixed-frame-structure DCC
  C. Pilot-adjusted DCC
  D. None of the above
  B. Fixed-frame-structure DCC
  C. Pilot-adjusted DCC

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• Question 162:

  NE A and NE B are adjacent NEs. If B3 and lower-order bit errors occur in the A->B direction and B1, B2, B3, and lower-order bit errors occur in the B->A direction, which of the following performance events are reported by NE A? (Choose four)

  A. RSBBE
  B. RSFEBBE
  C. MSBBE
  D. MSFEBBE
  E. HPBBE
  F. HPFEBBE
  A. RSBBE
  C. MSBBE
  E. HPBBE
  F. HPFEBBE

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• Question 163:

  For an OSN 3500, which of the following boards provides the centralized backup function for the +3.3 V power supply of each board in the subrack?

  A. PIU
  B. AUX
  C. COA
  D. SCC
  B. AUX

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• Question 164:

  In an SDH transmission link, the receive optical power is found to be -32 dBm, which is below the sensitivity threshold.

  A. Increase transmit power by replacing the line board
  B. Perform fiber cleaning and connector inspection
  C. Disable FEC to reduce processing delay
  D. Ignore the value because SDH auto-corrects all errors
  B. Perform fiber cleaning and connector inspection

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• Question 165:

  The section overhead of STM-4 is () bytes/frame.

  A. 9*9*4
  B. 9*8*4
  C. 9*9*8
  D. 9*8
  B. 9*8*4

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• Question 166:

  Compared with a dense wavelength division multiplexing (DWDM) system, a coarse wavelength division multiplexing (CWDM) system provides a certain number of wavelengths and a transmission distance within ( ) km, which greatly reduces system cost and has strong flexibility.

  A. 50
  B. 100
  C. 200
  D. 20
  B. 100

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• Question 167:

  Which of the following can be configured as the monitoring time of NE performance events?

  A. Later than the current time
  B. Same as the current time of the NE
  C. Earlier than the current time
  D. Any time
  A. Later than the current time

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• Question 168:

  Which of the following are optical-layer monitoring channels? (Choose four)

  A. OCh
  B. OMS
  C. OTS
  D. OSC
  A. OCh
  B. OMS
  C. OTS
  D. OSC

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• Question 169:

  For 100G (112 Gbit/s) signals, the actual data baud rate is only 28G baud.

  A. TRUE
  B. FALSE
  A. TRUE

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• Question 170:

  Which of the following light sources provides the best dispersion tolerance and stability?

  A. Directly modulated light source
  B. EA-modulated light source
  C. Machehnderodulated light source
  D. None of the above
  C. Machehnderodulated light source

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