Câu 10: H35-210-V2-5: HCIA-Access V2.5

Which of the following statements are incorrect? (Choose all that apply.)

1. A. WDM1r multiplexers can be deployed close to the CO or user as required.
2. B. GPON and XGS-PON have different rates but the same network architecture. Therefore, to ensure that the device supports XGS-PON, you only need to change the optical modules on an ONU. — đáp án hiện tại
3. C. The deployment of WDM1r multiplexers does not affect the calculation of optical link attenuation. — đáp án hiện tại
4. D. Because the center wavelengths of XGS-PON and GPON are different and do not overlap or conflict with each other, they can share an optical distribution network (ODN).