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

What is the minimum number of wires needed to send data over a serial

1.	What is the minimum number of wires needed to send data over a serial communication link layer?
A.	1
B.	2
C.	4
D.	6
E.	none of the above
Answer» C. 4

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

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