Free Huawei H31-341-ENU Exam Dumps Questions & Answers

The following description of the electrical layer overhead-source function, the correct ones are: (Multiple Choice)

• A.  OPUk performs client signal mapping, rate adjustment and rate adaptation in the transmission direction.
• B.  OTUk is responsible for calculating BIP-8, writing to SM, GCCO, FAS, MAFS, etc.
• C.  ODUkP is responsible for calculating BIP-8, writing PM, GCC1/2 and other overheads.
• D.  ODUkT calculates BIP-8 and writes to TCHi.

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

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

When the working channel protected by the optical line fails, it cannot be automatically switched to the protection channel. What are the possible reasons? (Multiple Choice)

• A.  The protection channel is faulty
• B.  Artificially issued a lock command
• C.  Waiting for the recovery time to be set too long
• D.  Protection group parameter configuration error

The following description of the alarm, which is correct? (Multiple choice)

• A.  OTUK-TIM: The OTUK trace identifier is the TTI (Trail Trace Identifier) mismatch. This alarm is generated if the trace identifiers of the peer end and the local end do not match and the TIM detection is enabled during the control process. Compare the API (Access Point Identifiers) in the input signal with the desired API.
• B.  OTUKBDI: OTUk backwards indication alarm. When the signal detected by the SM segment fails, the value of the BDI byte is 1, and the alarm is reported.
• C.  OTUk-LOM: Multi-frame alignment signal abnormal alarm, multi-frame positioning processing continues the multi-frame out-of-synchronization (o0M) state for 3ms, generating OTUelom alarm.
• D.  OTUKAIS: OTUK alarm indication signal, the AIS signal is transmitted downstream, indicating that the upstream detected signal is invalid.

SF is a signal failure event and SD is a signal degradation event. Both the SF and SD events are conditions for triggering protection switching, but whether the SD time is used as a trigger switching condition can be set by the user.

• A.  FALSE
• B.  TRUE