What is the primary difference between single-mode fiber (SMF) and multimode fiber (MMF)?
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A
SMF carries only analog signals; MMF carries digital signals
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B
SMF has a smaller core that supports one light path, enabling longer distances; MMF has a larger core supporting multiple light paths over shorter distances
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C
SMF is always faster than MMF regardless of distance
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D
MMF is used for all long-haul backbone applications