Session Layer is the fifth layer in the #Open Systems Interconnection (OSI) Model. It manages the connections between hosts. Sometimes, it will referred to as Application Layer with Presentation Layer and Application Layer.
Session Layer
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Presentation Layer
Presentation Layer is the sixth layer in the #Open Systems Interconnection (OSI) Model. It mainly provides formatting services to the Application Layer such as file encryption and format conversion. Session Layer, Application Layer and itself are commonly known as Application Layer as a whole in Internet Protocol Suite (TCP/IP).
- Open Systems Interconnection (OSI) Model
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Application Layer
Application Layer is the seventh layer in the #Open Systems Interconnection (OSI) Model. The main functionality for it is to provide networking services to user or application, for it to be ready to be sent down all the way down to Physical Layer. Networking engineers usually refer Session Layer, Presentation Layer and this layer as a single layer called Application Layer.