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4944) Four important physical layer components are: A) (1) the signaling methods used for conveying or representing data and translating between them, (2) the circuit configuration used to carry the data, (3) the transmission medium used, wired or wireless, on which the circuits are based, and (4) the devices typically associated with this layer B) (1) the data conveyed, (2) the simplex used to make the signal, (3) the bandwith resulting, and (4) the devices typically associated with this layerC) (1) the cable and connectors, (2) the digital encoding scheme, (3) the wired media are conducted, and (4) the devices typically associated with this layerD) (1) the radiation of the wireless media, (2) the separate transmission methods, (3) the full-duplex circuit, and (4) the devices typically associated with this layer

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