A roaming profile is stored on a network server
Techniques to ensure that network transmissions are received correctly and by the right recipient How the physical transmission media is arranged and connected
The right way to make sure that network devices preserve a proper rate of data flow How bits are represented on the network media
The OSI model isnt a item. Its just a conceptual framework you could use to greater fully grasp the complicated interactions taking location amongst ccna exam
the several devices on a network. It doesnt do something inside the communication process; suitable software program and hardware do the actual work. The OSI model merely defines which tasks must be accomplished and which protocols will deal with these tasks at each on the seven layers in the model. The seven layers are as follows:
Application (layer 7) Presentation (layer 6) Session (layer 5)
Transport (layer 4) Network (layer three) Data-Link (layer 2) Physical (layer 1)
You are able to remember the seven layers from best to bottom employing a handy mnemonic, including All Most people Seem To Will need Data Processing.
Each of your seven layers features a distinct function, which nicely discover a little bit later within the chapter.
The True IP Protocol Suite
There is certainly one more model to represent these exact same ideas that is certainly what the net was built upon. The model is identified by a handful microsoft exam
of names, like the TCP/IP model, the IP model, or the DoD model (after its designers, the U.S. Department of Defense). The TCP/IP model, as well call it, contains only 4 layers:
Application
Transport (at times named Host to Host)
World wide web
Link (also called Network Access)
This model was the one particular originally made use of for the style in the Internet. You wont encounter this model on the 70-642 exam, but as a network administrator, you might want to realize that this model exists after you hear your peers talking about it.
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