Câu 21: H31-341-V2-5: Huawei HCIP-Transmission V2.5

Unlike ROADM, FOADM has some disadvantages. What are the disadvantages of FOAM? (Choose all that apply.)

1. A. Site visits are required for node capacity expansion and service adjustment. — đáp án hiện tại
2. B. Wavelengths are allocated based on planning. Once they have been allocated, it is difficult to rellocate them, making network flexibility poor. — đáp án hiện tại
3. C. During node capacity expansion, the power budget must be adjusted manually onsite. It cannot be adjusted remotely or automatically. — đáp án hiện tại
4. D. Wavelength services cannot be provisioned quickly. — đáp án hiện tại