Huawei HCIP-Transmission V2.0 認定 H31-341-ENU 試験問題:

1. Which of the following description of the principle of automatic protection switching of the standard SSM protocol are correct? (Multiple choice)

A) If there are multiple clock sources with the highest quality level, the network element selects the clock with the highest clock priority as the synchronization source.
B) The network element broadcasts the clock quality information of the synchronization source to the downstream site through the S1 byte, and notifies the upstream station that the clock quality from the local network element is "not available for synchronization" by the S1 byte in the direction of the synchronization source.
C) According to the clock source priority table, the network element first selects the clock with the highest quality level from the available clock sources as the homologous source.
D) The network element broadcasts the clock quality information and the clock source ID of the synchronization source through the downstream station between the S1 bytes, and notifies the upstream station that the clock quality from the local network element is "not available for synchronization" by the S1 byte in the direction of the synchronization source.

2. The following limitations of alarm and performance analysis methods are: (Multiple Choice)

A) Field maintenance personnel cannot understand the current health of the equipment.
B) The network administrator cannot obtain any alarms, time, and historical alarms of the device.
C) In the case of complex networking, service, and fault information, many alarms and performance events may occur along with the occurrence of faults. Due to too many reports and performance events, maintenance personnel are unable to analyze.
D) When some faults occur, there may be no obvious alarms or performance events reported, and sometimes no alarms or performance events are found.

3. Which of the following factors determine the optical signal-to-noise ratio (OSNR) of the receiving end to a certain extent? After a certain distance of signal transmission in the WDM system, the optical signal-to-noise ratio (OSNR) of the receiving end decreases to a certain extent. Which of the following is the main reason?

A) No new optical fiber is used.
B) Use EDFA.
C) Use multiplexers and demultiplexers.
D) Fiber attenuation is too high.

4. The NG WDM two-dimensional ROADM site can use the WSMD9 single board, and its signal flow is an optical signal that is connected to the main optical channel from the "IN" optical port. The RDU (ROADM Demix Unit) optical module broadcasts 9 identical optical signals, which are output from the "DM1~DM8" and "ECPO" optical ports respectively. One of the signals is localized by the splitter board, and the other eight signals are dispatched to the other eight directions. Each wave of the main optical channel is connected from the "EXPI" optical port. The multiplexed or single-wave optical signal that needs to be inserted locally is input through the "AM1"~"AM8" optical port.

A) TRUE
B) FALSE

5. The shortcomings of traditional OTDR meters in measuring optical fibers are: (Multiple choice)

A) Cannot be used for routine maintenance testing
B) Manual interpretation is required, which requires high operator requirements
C) Need inbound measurement
D) Business will be interrupted during measurement

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