H31-311_V2.5 試験問題を無料オンラインアクセス

What is the function of the overhead TCM in ODUk?

• A.Channel monitoring overhead
• B.Path Trace Identifier Overhead
• C.Tandem Connection Monitoring Overhead
• D.General communication channel overhead

Which of the following statements about the sequence of signal flow between SDH interfaces and cross-connect units are correct?

• A.SPICMSTRST
• B.SPIRST
• C.SPTMSTMSARSTMSPHPT
• D.SPIMSPMSA

Which of the following options are needed to directly send a low-speed signal from a high-speed signal? (Multiple choice)

• A.TU-PTR
• B.AU-PTR
• C.A1, A2
• D.G1

Self-healing means that when a network failure occurs, the network automatically recovers from the failure in a very short time (ITU-T stipulates that it is within ()) without human intervention, so that users can hardly feel that the network has failed.

• A.20 ms
• B.100 ms
• C.200 ms
• D.50 ms

Subnet division can reduce network traffic, improve network performance and simplify management.

• A.False
• B.True