Free Access Huawei.H31-341_V2.5-ENU.v2025-07-07.q217 Practice Test (Page 6)

Question 21

In the electrical layer overhead processing-sink function, when the signal flow is from OCh to Client, first detect PMODUkP; then detect TCM ODUKT.

A.False

B.True

Question 22

Which of the following descriptions about alarms is correct? (Multiple choice)

A.OTUk-LOM: Multiframe alignment signal abnormality alarm, multiframe alignment processing continues in the multiframe out-of-sync (o0M) state for 3ms, and an OTUELOM alarm is generated.

B.OTUKBD: OTUk backward defect indication alarm. When the signal detected by the SM segment fails, the value of the BDI byte is 1, and this alarm is reported.

C.OTUK-TIM: The OTUK trail identifier (TTI (Trail Trace Identifier)) does not match. During the control process, if the trace identifiers of the remote end and the local end do not match and TIM detection is enabled, this alarm is generated. Compare the API (Access Point identifiers) in the input signal with the expected API.

D.OTUKAIS: OTUK alarm indication signal, the AIS signal is transmitted downstream, indicating that the signal detected upstream is invalid.

Question 23

Which of the following descriptions about OSC and ESC technology is correct? (Multiple choice)

A.ESC technology cannot be used at the OLA site

B.When using ESC for monitoring, it must be ensured that at least one wave of service channels has been commissioned normally

C.When the amplification board fails, the optical monitoring signal will also fail

D.If the distance between the two sites is too long and the attenuation exceeds the sensitivity of the OSC board, the OSC cannot be used

Question 24

Which of the following overhead bytes in VC4 high-order path overhead is functionally similar to the low-order path overhead byte V5 in VC12? (Multiple choice)

A.G1

B.B3

C.C2

D.J1

Question 25

The single-fiber bidirectional WDM system only uses one optical fiber to transmit optical signals in two directions at the same time. The optical signals in the two directions should be aligned at different wavelengths.

A.True

B.False

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Question 21

Question 22

Question 23

Question 24

Question 25

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