Which of the following descriptions of configuring APE functions is wrong?
For protection, which of the following is a double-ended switchover and requires an APS protocol?
Which of the following operations must be performed before querying the error and optical power on the NMS, otherwise the corresponding data cannot be queried?
When configuring the electrical layer scheduling service, one RX/TX port can only establish a connection with one optical channel of the ClientLP port.
What are the correct statements about the system's 24-hour error-free loopback performance test? (multiple choice)