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upper layer

The application-oriented layers of the OSI reference model

are also referred to as the upper layers, i.e. the higher layers.

OSI reference model with the transport and application-oriented layers

OSI reference model with the transport and application-oriented layers

These include the three layers arranged above thetransport layer: the communication control

layer(Session

Layer), the presentation layer

(Presentation Layer) and theapplication

layer (Application

Layer).

The layers lying below the transport layer, i.e. the network layer, the link layer and the bit transmission layer, are in contrast referred to as the lower layers.

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Englisch: upper layer
Updated at: 26.02.2008
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