The following features can adjust the bandwidth on demand in the application of Ethernet networking, dynamically increase and decrease the members in the VCTRUNK without affecting the business. When a virtual concatenation group member fails, the bandwidth can be quickly adjusted to ensure normal data transmission; when the failed member is restored, the original bandwidth of the virtual concatenation group is automatically restored.

When relocating the OLA site (10G system), which of the following descriptions are wrong

A network element cannot join the smart domain after the smart feature is enabled. The possible reasons are: (multiple choice)

Which of the following are the background reasons for the introduction of coherent communication ()? (multiple choice)

After the 10G system wavelength division commissioning is completed, it is found that the OSNR value of the single wave scanned by the receiving MCA is very good, but the bit error rate before error correction is very poor. The possible reasons are (multiple choices)