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QuizMultiple Choice

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Question 1 • Career Explorations II

What is the second software layer of the Open Systems Interconnection reference model called?

Answer
A
data link
B
protocol
C
network
D
TCP/IP

Explanation

The OSI reference model has seven layers, counted from the bottom: physical, data link, network, transport, session, presentation, and application. Therefore, its second layer is the data link layer, choice A.

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