H31-341 Online Practice Questions and Answers

For the MSTP equipment, the pass-through mode is used for VC-4 services by default, and the termination mode is used for VC12/VC3 services by default.

A. True

B. False

Which of the following statements about the line fiber quality monitoring performance parameters is wrong?

A. The pulse width of emitted optical pulses varies according to monitoring modes, and affects the detection distance and measurement precision. A greater pulse width provides a larger dynamic range, longer detection distance and better measurement precision.

B. When the pulse width increases, the light emitting time increases and consequently a larger energy is obtained. This means that a larger dynamic range can be acquired but also larger dead zones will result.

C. Measurement is performed multiple times within the detection time. The average value is obtained based on the measurement results to improve the measurement precision. The actual duration from the time when a detection event starts to the time when the detection results are returned will be longer than the Detection time.

D. The total fiber loss will affect the detection distance and the dynamic range is fixed for the same detection mode. Therefore, a larger total fiber loss indicates a smaller detection distance.

Dispersion compensation is not required for 40 Gbit/s and 100 Gbit/s coherent systems because the dispersion tolerance of coherent boards is large. NG WDM products do not support hybrid transmission of non-coherent and coherent networks.

A. True

B. False

Which of the following statements about avoiding the generation of discrete trails are correct?

A. Use the trail function for configuration.

B. For services configured on a per-NE basis, search for trails on the NMS to ensure that the service configurations are complete and standard.

C. A fiber cut or switching test must be performed on the trail with protection routes to ensure that the configuration is complete and standard.

D. Guide users to learn service configuration specifications.

In a WDM system, after a distance of transmission, the OSNR of the signals at the receive end decreases to a certain extent. Which of the following is the main cause?

A. Use of EDFA

B. The fiber attenuation is too large.

C. New optical fiber is not used.

D. Use of Demultiplexer Multiplexer

Which of the following is not included in an ASON network?

A. ASON Domain

B. ASON NE

C. SC

D. TE Link

The troubleshooting methods that can be used to separate external faults are:

A. Configuration Data Analysis

B. Meter Test

C. Replacement

D. Loopback

Which of the following protection schemes require the APS protocol?

A. ODUk SPRing protection

B. ODUk SNCP

C. SW SNCP

D. 1:1 optical line protection

ESC can also be used at OLA sites.

A. True

B. False

Which of the following statements about AU pointers are correct?

A. The root cause of the AU pointer justification is that the clocks of the upstream and downstream stations are not synchronized.

B. AU-PTR indicates the position of the JO byte.

C. If the receive end detects that the H1H2 bytes are "1", the local end generates the AU-AIS alarm.

D. The value of the AU-PTR pointer is placed in the last 10 bits of the HI and H2 bytes. Therefore, the valid value of the AU-PTR pointer is 0-1023.