Internetworking - Technical MCQs

Q1:

Acknowledgments, sequencing, and flow control are characteristics of which OSI layer?

A Layer 2

B Layer 3

C Layer 4

D Layer 7

ANS:C - 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).