Question
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 of the above
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Q. The protocols working in the physical layer of the OSI Model are ___.
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