FreeBSD Operating System

What is false about synchronous communication?

(Отметьте один правильный вариант ответа.)

Варианты ответа

SYN characters tell the receiver that that the line is idle(Верный ответ)

Each block is preceded by one or two SYN characters

SYN characters enable the receiver to determine the correct orientation of the bits in the data

It transmits data in blocks

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