单选题FEC与CFEC区别是（）.A以反码发射B选呼方式C选呼方式并以反码发射D双向互通
单选题
FEC与CFEC区别是（）.
A
以反码发射
B
选呼方式
C
选呼方式并以反码发射
D
双向互通
参考解析
解析：
暂无解析
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关于FEC的说法，正确的有（）。A、支持FEC和不支持FEC功能的设备不能直接互通B、FEC可分为带外FEC和带内FECC、AFEC与FEC也不能互通D、AFEC比FEC更加降低系统对OSNR的要求
What is the role of Forwarding Equivalence Class （FEC） in MPLS？（）A、FEC determines how IP packets are forwarded in MPLS LSP.B、FEC determines how to establish an LSP path.C、FEC determines how a group of IP packets are mapped to an LSP.D、FEC determines how MPLS labels are stacked in LSP.E、None of above.
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