Free Huawei H31-341_V2.5 Exam Dumps Questions & Answers

OTUk_DEG indicates OTUk signal degradation. Which of the following statements about the bit error detection mode are true? (Choose all that apply.)

• A.  When bit errors are detected in burst mode, this alarm is reported after signal degradation or bit error threshold crossing occurs.
• B.  When bit errors are detected in Poisson mode, this alarm is reported after signal degradation occurs.
• C.  When bit errors are detected in burst mode, this alarm is reported after signal degradation occurs.
• D.  When bit errors are detected in Poisson mode, this alarm is reported after signal degradation or bit error threshold crossing occurs.

In an OA-free system, the lower threshold of the receive optical power of a line board or the WDM side of an OTU board Is the optical module's receiver sensitivity plus 3 dB.

• A.  FALSE
• B.  TRUE

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.  FALSE
• B.  TRUE

Modulation is a process where the information of a signal source is processed and added to a carrier to make the information suitable for channel transmission. It is a technology where a carrier changes with a signal.

• A.  FALSE
• B.  TRUE

During CV/FFD, the ingress node transmits detection packets at a specific interval, and the egress node checks the number and content of these packets at an interval ( ) times the length of the detection packet transmission interval.

• A.  10
• B.  5
• C.  15
• D.  3