Encryption is attained at what layer of the osi model?

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Updated OSI Model

Terms in this set (7)

Layer 7

Application Layer - Human interaction layer, where applications can access the network services - Details: Protocols: HTTP, SMTP

Layer 6

Presentation Layer - Ensures that data is in a usable format and is where data encryption occurs. Details: The presentation layer is responsible for translation, encryption, and compression of data.

Layer 5

Session Layer - Maintains connections and is responsible for controlling ports and sessions. Details: The session layer ensures that the session stays open long enough to transfer all the data being exchanged, and then promptly closes the session in order to avoid wasting resources.

Layer 4

Transport Layer - Transmits data using transmission protocols including TCP and UDP. Details: The transport layer on the receiving device is responsible for reassembling the segments into data the session layer can consume.

Layer 3

Network Layer - Decides which physical path the data will take. Details: The network layer also finds the best physical path for the data to reach its destination; this is known as routing.

Layer 2

Datalink Layer - Defines the format of data on the network. Details: Like the network layer, the data link layer is also responsible for flow control and error control in intra-network communication

Layer 1

Physical Layer - Transmits raw bit stream over the physical medium. Details: The physical layer of both devices must also agree on a signal convention so that the 1s can be distinguished from the 0s on both devices.

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