Select the correct protection subtypes according to the descriptions.
Drag the correct answer to the corresponding number in the picture.
Which of the following statements about trail deletion on the NMS is false?
Generally, which of the following operations will interrupt services on live networks?
The EDFA amplifies service signals and brings noise to the system. It is the main source of noise.
Which of the following are basic principles for locating a WDM system fault? (Choose all that apply.)
Which of the following statements about LSP is false?
Which of the following is not an advantage of WDM?
When a GE service is encapsulated into an OTN frame structure and an SDH frame structure, the alarms reported by client-side devices are different.
For hybrid transmission of 100G-and-beyond and 10G signals, it is recommended that the optical power of 100G and beyond signals be higher than that of 10G signals but not higher than the single-wavelength nominal value of an OA board.