Acknowledgments, sequencing, and flow control are characteristics of which OSI layer?
A
Layer 2
B
Layer 3
C
Layer 4
D
Layer 7
Correct Answer: Layer 4
A reliable Transport layer connection uses acknowledgments to make sure all data is transmitted and received reliably. A reliable connection is defined by a virtual circuit that uses acknowledgments, sequencing, and flow control, which are characteristics of the Transport layer (layer 4).