Questions for the H31-341-V2-5 were updated on : Dec 01 ,2025
Which of the following causes a single channel to report the BEFFEC_EXC alarm?
D
Signal flow analysis is used to divide an entire network into several OMSs, identify the faulty section,
determine whether the fault is occurring unidirectionally or bidirectionally, and then locate the fault
along the signal flow direction based on fault information.
B
Signal flow analysis is used to check the service flow of a faulty WDM system node by node to locate
the fault.
A
Which of the following external factors may cause abnormal optical power?
A, B, C
When the loopback method is used, the objects to be replaced can be optical fibers, boards, fiber
adapters, optical attenuators, or power supply devices.
A
Optical power is an Important indicator of a WDM system and directly affects the transmission
distance of signals. Therefore, the output optical power of a site must be as high as possible to
ensure that signals can reach the peer site.
B
When LCK is inserted at the local ODUk PM overhead, how does the downstream site process the
insertion?
A, D
OTUk_LOM is an alarm indicating that the frame alignment signal (FAS) is abnormal. This alarm
occurs when the frame alignment processing is out of frame (OOF) for three consecutive
milliseconds.
B
Optical layer overhead alarm detection is implemented through optical layer overhead OOS. The
R_LOS and MUT_LOS alarms are optical layer alarms and therefore are reported based on OOS
detection.
A
When a GE service is encapsulated into an OTN frame structure and an SDH frame structure, the
alarms reported by client-side devices are different.
B
The OTUk_LOM alarm is generated when the out of multiframe (OOM) state lasts for 3 ms.
A
In a scenario where non-convergence OTU boards process standard SDH signals, both site A and site
B are WDM sites, and the R_LOS alarm is detected on the client side of the OTU board at site
A
Generally, which of the following operations will interrupt services on live networks?
A, C, D
Which of the following are data dumping types on the NMS?
A, C, D
Lower ground resistance indicates better grounding, that is, faster conduction of current to the
ground.
A