* Testing Optical Transmit Power :
* Testing the optical transmit power of an ONU involves measuring the power output at its upstream port.
* Key Considerations :
* Wavelength : The upstream wavelength for GPON/XGS-PON is 1310 nm , so selecting this wavelength is correct.
* Power Meter Type : A common power meter is not suitable for testing optical power in live networks. Instead, a specialized optical power meter or an OLT-based monitoring tool should be used.
* Why FALSE?
* Using a common power meter is incorrect because it may not provide accurate readings or could disrupt network operation.
Thus, the correct answer is B .
References:
* HCIA Huawei ACCESS Official Documentation , Chapter: ONU Optical Testing.
* Optical Power Measurement Procedures by Huawei.