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what is the minimum number of wires needed to send data over a serial communication link layer

Q.

What is the minimum number of wires needed to send data over a serial communication link layer ?

[A] 1

[B] 2

[C] 3

[D] 4

Answer & Explanation
Option: [B]

DATA COMMUNICATION & COMPUTER NETWORKS – MULTIPLE CHOICE QUESTIONS AND ANSWERS | 250 MCQS

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