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7 Cards in this Set
- Front
- Back
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Application |
Layer 7 This is the later the user interacts with (chrome, Skype) |
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Presentation |
Layer 6 Represents the preparation/translation of Application format -> Network format Or Network format -> Application format Presents data for Application or Network Example: Encryption or Decryption is done on this layer |
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Session |
Layer 5 When 2 devices, computer/servers, need to speak to each other a session needs to be created. Setup, Coordination(how long a system will wait for a response), and termination of the App at each end of the session. |
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Transport |
Layer 4 Coordination of the data transfer between end systems and host. How much data to send, at what rate, where it goes. TCP and UDP |
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Networking |
Layer 3 Most of the router functionality that network professionals care about. This is the layer responsible for packet forwarding, including routing through different routers. IP addresses work at this layer. |
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Data Link |
Layer 2 Provides node-to-node data transfer. Media Access Control (MAC Address) Logic Link Control(LLC) Switches are on this layer. |
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Physical |
Layer 1 Cable type, radio frequency link(wifi), as well as layout of pins, voltages, and other physical requirements. When a Network problem occurs people go right to the physical layer. Making sure the cables are properly connected and that power is properly connected. |
