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1. |
The protocols working in the physical layer of the OSI Model are ___. |
A. | USB, Bluetooth, IEEE 802.3, IEEE 802.11, IEEE 802.15, IEEE 802.16 |
B. | POTS, PDH, SONET, SDH, PON, OTN, DSL, ITU-T V series, ITU-T G.hn PHY |
C. | I.430, I.431, EIA/TIA-232, EIA/TIA-449 |
D. | All the above |
Answer» E. | |