The OSI help is the help that most networking organisation are old with, but to acquire your CCNA, you requirement to undergo the OSI model, the prescript model, and how the digit transpose to apiece other.
The quaternary layers of the prescript structure crapper be compared to destined levels of the OSI model. Its essential to undergo what apiece take of the prescript protocol structure does, and how these layers transpose to the OSI model.
The Application Layer of the prescript help performs such the aforementioned tasks as the Application, Presentation, and Session layers of the OSI model.
The Transport place in the prescript structure is kindred to the Transport place in the OSI model. This place crapper ingest protocol or UDP as well.
The Internetwork place in the prescript structure uses IP addresses to watch how packets should be routed. Remember that the OSI help uses IP addresses, or Layer 3 Addresses, at the Network layer. The digit layers do such the aforementioned thing. This place is also referred to in the prescript help as the cyberspace layer.
The Network Interface place in the prescript structure serves to delimitate the protocols and the element necessary to actually have the accumulation crossways the network. The Network Interface help does the impact of both the Data Link and Physical Layers in the OSI model.
Keeping every this straightforward crapper be rattling unclear when you prototypal move your CCNA studies. Concentrate on the OSI help in your studies, but attain trusty you undergo how the prescript help maps to that help and you'll be primed for CCNA communicating success!
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