Discussion
Select incorrect statement in error retransmission used in continuous ARQ method
Answer: C
Correct answer: Go-back-N has better line utilization
Selective repeat retransmits only the frame that failed, whereas go-back-N retransmits it and everything sent after it, so selective repeat makes the better use of the line. It pays for that with more buffering at the receiver and more complex logic, which is what the other statements record.
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