Free Huawei H31-341_V2.5 Practice Exam with Questions & Answers | Set: 3

In the OTN hierarchy, the OTUCn layer provides digital section functions (framing, section monitoring, forward error correction), and the ODUCn layer provides the digital path (channel) functions, so together they implement the digital section and channel layers.

PM (Performance Monitoring), TCM (Trail Channel Monitoring), and APS/PCC (Automatic Protection Switching/Path Connection Control) are defined ODUk overhead functions; NJO is not.

The TNG2M60V board is not a 60-channel multiplexer with VOA for the Super C band; this description is incorrect for that board model.

When a receiver detects an OTUk_DEG (degraded) condition, it signals the upstream node by sending a backward defect indication (OTUk_BDI) alarm.

With an initial RI1–RI2 difference of 2 dB and a 5 dB threshold, only when the active channel’s loss increases by 7 dB (to 3 dBm) while the standby remains at 8 dBm does the difference reach 5 dB and trigger switching.

Among the differences between MPLS-TP OAM and MPLS OAM, the interval for sending OAM packets is not changed by canceling 3.3 ms and 10 ms values (D). This means these intervals remain in place or are not the key differentiators. The other options (A, B, C) correctly describe differences such as packet formats, label alarms (AIS, RD1, UNEXPMEG), and added functions (CC, AIS, LB, LT) unique to MPLS-TP OAM. HCIP-Transmission materials clarify these differences to aid in understanding the enhanced OAM capabilities for transport profile MPLS networks.

Disabling automatic alarm reporting affects only fault monitoring and visibility, not the actual forwarding of services, so it cannot interrupt traffic.

PWE3 tunnels can carry multiple pseudowires; they are not restricted to a single PW per tunnel.

In Link Aggregation Group (LAG) settings, port priority determines which ports carry traffic preferentially. (A) If a primary port is configured to preferentially carry services, it must have a higher priority than other ports to ensure it is selected first. Port priority is numerically represented, and (D) a lower value of “port priority” means higher priority, which can be counterintuitive but is standard in networking. For manual aggregation groups that don’t run LACP, priority settings typically do not apply. This priority mechanism helps optimize link utilization and failover in aggregated links, as detailed in HCIP-Transmission documentation on Ethernet and service aggregation.