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Question

Which of the following statement is incorrect ?

a.

The second layer of communication is the data-link layer

b.

Errors in the physical layer can be detected by the data link layer

c.

The fourth layer, in reference to the OSI model, is the session layer

d.

The CCITT Recommendation X.25 specifies three layers of communication: physical, link and network

Posted under Networking

Answer: (c).The fourth layer, in reference to the OSI model, is the session layer

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Q. Which of the following statement is incorrect ?
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