Huawei Huawei Certifications H31-311 Questions & Answers

• Question 161:

  Which of the following is the meaning of "L" in the optical module parameter "L-64.2"?

  A. Transmission distance

  B. Dispersion coefficient

  C. Transmit wavelength

  D. Receive wavelength

  Correct Answer: A

• Question 162:

  Which of the following methods can be used to multiplex lower-order ODUk to higher-order ODUk?

  A. Time division multiplexing

  B. Wavelength division multiplexing

  C. Space division multiplexing

  D. Frequency division multiplexing

  Correct Answer: A

• Question 163:

  Which of the following can be the center wavelengths of the pump sources in an EDFA? (Multiple Choice)

  A. 980 nm

  B. 1510 nm

  C. 1480 nm

  D. 1310 nm

  Correct Answer: AC

• Question 164:

  Which of the following is the meaning of SFD in the Ethernet frame structure?

  A. Preamble

  B. Frame check sequence

  C. Start frame delimiter

  D. Payload

  Correct Answer: C

• Question 165:

  OTM nr.m consists of a maximum of "n" optical multiplexing channels and does not support non-channelassociated overheads. The letter "r" indicates function reduction.

  A. TRUE

  B. FALSE

  Correct Answer: A

• Question 166:

  Which of the following is not a condition for triggering multiplex section protection (MSP)?

  A. The MS-AIS signal is detected.

  B. AU-AIS is detected.

  C. R-LOS is detected.

  D. R-LOF is detected.

  Correct Answer: B

• Question 167:

  When the transmit end detects that the b6-b8 of the K2 byte is 110, it indicates that the () alarm is reported at the transmit end.

  A. MS-AIS

  B. R-LOS

  C. R-LOF

  D. MS-RDI

  Correct Answer: ABC

• Question 168:

  Which of the following statements about U2000 license is incorrect?

  A. Each license file corresponds to the equipment serial number (ESN) of one U2000 computer, and therefore can be used only on the corresponding computer.

  B. Formal U2000 license varies depending on operating system platforms. You must apply for a U2000 license based on the specific operating system.

  C. The U2000 license file is named in the "xxxxxxx.dat" format.

  D. Do not modify license files. Otherwise, the license files will fail.

  Correct Answer: B

• Question 169:

  The PRBS can be used to test whether an SDH service is normal and whether the protection switching function is normal.

  A. TRUE

  B. FALSE

  Correct Answer: A

• Question 170:

  The coherent receiver technology uses the local oscillator laser that has the same frequency as received signals to perform coherent processing and recovers the ( ) information from the received signals. (Multiple Choice)

  A. Phase

  B. Frequency

  C. Polarization state

  D. Amplitude

  Correct Answer: ACD