H31-341_V2.5 Exam Dumps - Huawei HCIP Transmission Questions and Answers

Optical layer overhead alarm detection is implemented via the Optical Layer Overhead Out Of Service (OOS) mechanism. Alarms like R_LOS (Loss of Signal) and MUT_LOS (Multiple Loss of Signal) belong to the optical layer and are reported based on OOS detection. This approach helps isolate physical layer faults and informs higher layers for protection switching or maintenance. HCIP-Transmission emphasizes that OOS-based alarm detection is crucial for rapid fault localization and efficient network operation in optical transmission systems.

Signal flow analysis is a diagnostic method used to check the service flow through a faulty WDM system node by node, aiding in fault localization. By analyzing the signal path stepwise, engineers can identify where faults or performance degradation occur within the network elements. HCIP-Transmission materials highlight this technique as vital for efficient troubleshooting in complex optical networks, enabling fast restoration and minimal service impact.

The Multiframe Alignment Signal (MFAS) is specifically defined to provide alignment across multiple OTUk/ODUk frames when overhead bytes span those frames, so it must be used for multiframe alignment.

A parallel FOADM site typically uses an EX40+EMR8 networking mode, where EX40 handles add/drop functions and EMR8 manages multiplexing and amplification.

Lower ground resistance indicates better grounding performance because it allows current to be conducted to the ground more quickly and efficiently. Good grounding is essential for equipment protection, system stability, and safety in transmission networks. A low resistance path reduces the risk of electrical shock, equipment damage, and signal interference. HCIP-Transmission underscores the importance of grounding quality as part of overall network infrastructure integrity and reliability, making low ground resistance a key objective in grounding design.

RFC 4553 mandates the inclusion of the SAToP control word on every packet, so it is not optional.

The loopback method can substitute or bypass components such as fibers, boards, adapters, attenuators, or power supplies to isolate and verify signal paths during troubleshooting.

Abnormal optical power can be caused by external factors such as (A) bent optical cables causing increased attenuation or microbends, (B) contaminated connectors reducing transmission efficiency due to dirt or dust, and (C) old optical fibers suffering from aging and degradation that increase loss. (D) Crossed pairs on the ODF (Optical Distribution Frame) is more related to wiring errors but may not directly cause optical power anomalies. HCIP-Transmission stresses proper handling and maintenance of fibers and connectors to maintain optimal optical power levels and network reliability.

When LCK (Lock) is inserted in the local ODUk PM overhead, the downstream site processes it by (A) inserting the ODUk PM BDI (Backward Defect Indication) alarm back to the upstream site and (D) reporting the ODUk_PM_LCK alarm locally. This mechanism allows upstream devices to be aware of downstream lock conditions, enabling coordinated protection actions. HCIP-Transmission highlights these procedures as part of OTN fault propagation and monitoring to maintain network stability and rapid fault response.