Free Access Huawei.H31-311_V2.5.v2024-10-03.q257 Practice Test (Page 10)

Question 41

Which of the following are the main technical indicators for measuring filters? (Multiple choice)

A.Insertion loss

B.Bandwidth

C.Power consumption

D.Crosstalk

Question 42

Which of the following descriptions of LCAS is wrong?

A.Use SDH overhead bytes (high-order virtual concatenation uses K4, low-order virtual concatenation uses H4) to carry control information and perform handshake operations between the source and the sink

B.When some members fail, other members still transmit data normally; when the failed members are repaired, the bandwidth of the virtual cascade group can be automatically restored.

C.If the belt curtain of a VCTrunk is not suitable and needs to be increased or decreased, the belt curtain can be adjusted through LCAS, which only requires increasing or decreasing the number of VCTrunk members to achieve smooth belt curtain upgrade without interrupting business

D.TR_TIMR is the waiting time for recovery, which refers to the time it takes for the time slot shielded by LCAS to be added to the LCAS virtual cascade group after it changes from bad to good.

Question 43

Which of the following descriptions of ODUK_PM_BDI is correct?

A.BIP8 bit error exceeds the limit in the ODUk PM segment

B.ODUk PM backward defect indication

C.ODUk PM signal degradation

D.ODUk PM open connection indication

Question 44

In WDM systems, the reduction in optical signal-to-noise ratio is mainly due to the increasing amount of noise introduced into the optical fiber line.

A.True

B.False

Question 45

If you group SNCP services with the same source, sink, or route, you can increase the SNCP switching speed