AnswerA, B, C, E
ExplanationTheFlex-PON boardsupports multiple PON technologies, including:
GPON:Gigabit Passive Optical Network, widely used for residential and small business applications.
XG-PON:10G Asymmetric Passive Optical Network, offering higher upstream and downstream bandwidths.
XGS-PON:10G Symmetric Passive Optical Network, providing equal upstream and downstream speeds.
Combo PON:Combines GPON and XG(S)-PON on the same port, enabling seamless upgrades from GPON to XG(S)-PON without replacing hardware.
The only option not supported by Flex-PON isXG-PON Combo, as 'Combo' typically refers to the integration of GPON and XG(S)-PON, not just XG-PON alone.
Huawei Flex-PON Technology White Paper
ITU-T G.984.x and G.988 Standards for PON