mtogos的部落格

The OSI shining example is the exemplary that most networking personnel are habituated with, but to make your CCNA, you requirement to know the OSI model, the TCP/IP model, and how the two map to each separate.

The cardinal layers of the TCP/IP architecture can be compared to unquestionable levels of the OSI original. It's measurable to cognise what respectively horizontal of the TCP/IP prescript architecture does, and how these layers map to the OSI classic.

The Application Layer of the TCP/IP epitome performs a great deal the aforementioned tasks as the Application, Presentation, and Session layers of the OSI prototype.

The Transport echelon in the TCP/IP building is like to the Transport lode in the OSI quintessence. This covering can use TCP or UDP as very well.

The Internetwork vein in the TCP/IP edifice uses IP addresses to learn how packets should be routed. Remember that the OSI quintessence uses IP addresses, or "Layer 3 Addresses", at the Network sheet. The two layers do considerably the self thing. This echelon is besides referred to in the TCP/IP epitome as the Internet stratum.

The Network Interface flat solid in the TCP/IP edifice serves to describe the protocols and the weapons system necessary to really speak the notes across the scheme. The Network Interface epitome does the manual labour of both the Data Link and Physical Layers in the OSI epitome.

Keeping all this continuous can be vastly maze-like once you introductory initiation your CCNA studies. Concentrate on the OSI ideal in your studies, but craft firm you cognise how the TCP/IP worthy maps to that epitome and you'll be organized for CCNA exam success!