What are three functions of the upper data link sublayer in the OSI model? (Choose three.)

recognizes streams of bits
identifies the network layer protocol
makes the connection with the upper layers

identifies the source and destination applications
insulates network layer protocols from changes in physical equipment
determines the source of a transmission when multiple devices are transmitting


ccna exploration 1 chapter 9 Exam Question And Answers 

What are three functions of the upper data link sublayer in the OSI model? (Choose three.)

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