Short Answer
If two stations exchange data each needs to maintain two windows,one for transmit and one for receive,and each side needs to send the data and acknowledgments to the other.To provide efficient support for this requirement a feature known as ________ is typically provided.
Correct Answer:

Verified
Correct Answer:
Verified
Q18: The layer of control that provides error
Q19: It is necessary to impose a layer
Q20: Each _ includes a field that holds
Q21: RR and RNR are examples of an
Q22: The most important data link control protocol
Q24: With _ ARQ the only frames retransmitted
Q25: The flag field pattern is _.<br>A)01111110<br>B)01111010<br>C)00111110<br>D)01111101
Q26: _ provide the ARQ mechanism in HDLC
Q27: Selective reject is a useful choice for
Q28: Data are sent in blocks called _.<br>A)links<br>B)units<br>C)entities<br>D)frames