Which of the following boards can be inserted on the OSN 9800 U64 subrack?

Loopback is a common operation for routine maintenance and troubleshooting. Which of the following statements about loopback operations are incorrect?

When creating a Client path using the path method, if the RL0S alarm is generated on the line card, the path cannot be created.

Which of the following monitoring boards do not support 1588v2 signal processing and transparent transmission?

After the signal of the standard Ethernet frame length of 64 Bytes is connected to the Ethernet board, if the QinQ function is enabled, what is the actual frame length of the signal inside the board?