What specifications does physical layer provides __________. A. mechanical specifications of electrical connectors and cablesB. electrical specification of transmission line signal level C. specification for IR over optical fiber D. all of the mentioned

What specifications does physical layer provides __________.
A. mechanical specifications of electrical connectors and cables
B. electrical specification of transmission line signal level
C. specification for IR over optical fiber
D. all of the mentioned
by

1 Answer

Answer :

D. all of the mentioned
by

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