Computer Science - Networking - Discussion

Discussion Forum : Networking - Section 5 (Q.No. 9)

Networking

Which of the following statement is incorrect?

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

The second layer of communication is the data-link layer

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

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

None of the above

Answer: Option

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