Q. 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

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✅ Correct Answer: (D) all of the mentioned

Published by Mr. Dubey ⭐ 111.42K Points at 16-Sep-2023 02:31 pm in Computer Networks

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