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What is usually used to acknowledge that the data was received and to request the retransmission of missing data when connectionless protocols are implemented at the lower layers of the OSI model?



A. IP
B. UDP
C. Ethernet
D. A connectionless acknowledgement
E. An upper-layer, connection-oriented protocol or service

This question is part of CCNA 1 Final Exam
Asked by Erinia, Last updated: Jun 28, 2020

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1 Answer

John Smith

John Smith

Answered Jun 07, 2017

An upper-layer, connection-oriented protocol or service
 

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