Karteikarten
OSI Model
Karten in diesem Stapel (7)
- 1Layer 1Physical- Concerned with the transmission and reception of the unstructured raw bit stream over the physical medium.
Example: Cables, hubs etc.
Data encoding, physical medium attachment, transmission techniques, baseband or broadband.
DOD4 Model: NETWORK
HUB - 2Layer 2Data Link: Provides error-free transfer from one node to another over the physical layer. Ex: Frames (envelopes, contains MAC address) NIC Card--Switch--NIC Card (end to end). Establishes & terminates the logical link between nodes.
DOD4 Model: NETWORK
Switch Bridge WAP PPP/SLIP - 3Layer 3Network: controls the operations of the subnet, deciding which physical path the data takes. Examples: letter containing IP address, Routing, subnet traffic control
DOD4 Model: INTERNET
Routers: IP/IPX/ICMP - 4Layer 4Transport: ensures the messages are delivered error-free in sequence, and with no losses or duplications. Examples: TCP Host to Host, Flow control, message segmentation, message acknowlegement
DOD4 Model: HOST TO HOST
TCP/SPX/UDP - 5Layer 5Session: allows sessions establishment between processes running on different stations. Examples: Synch & send to ports (logical ports), Sessions establishment, maintenance and termination
DOD4 Model: PROCESS
Logical Ports: RPC/SQL/NFS, NetBios names - 6Layer 6Presentation: Formats the data to be presented to the application layer. It can be viewed as the Translator" for the network. Examples: Syntax layer, encrypt and decrypt (if needed), character code translation, data conversion.
DOD4 Model: PROCESS
JPEG/ASCII/EBDIC/TIFF/GIF/PICT - 7Layer 7Application: Serves as the window for users and application processes to access the network services. Examples: End user layer-program that opens what was sent or creates what is to be sent, resource sharing, remote file access
DOD4 Model: PROCESS
User Application: SMTP
Informationen
- Beschreibung
- Karteikarten am OSI Model, erstellt von cholera_morbus am 15/04/2015.
- Erstellt von
- cholera_morbus
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