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قديم 10-27-2010, 10:30 AM   #1
mr.ccie
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تاريخ التسجيل: Jul 2010
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mr.ccie will become famous soon enough
افتراضي The TCP/IP and OSI بالصور شرح رائع وممتع


السلام عليكم .....
شرح من كتاب wendell Odeom
الشرح جميل وممتع وواضح ..
راح انزل الشرح فقط بالانجليزي ( عربي لا ولا يمكن وجهه نظري ) والتعليق راح اعلق لمن يج صعوبه وبالعربي
وفي النهايه راح اضع اسئله مهمه وتعاريف روعه من الكتاب ونحلها سويا
بس ابي منكم طلب التفاعل حتى نكمل كورس CCNA كامل ..

The tcp/ip and OSI Networking Models
The term
networking model, or networking architecture, refers to an organized set of
الموضوع الأصلى من هنا: منتديات سيسكو التعليمية | كن بين الخبراء ! http://www.ciscovb.com/vb/t1838.html#post13771
documents. Individually, these documents describe one small function required for a
network. These documents may define a protocol, which is a set of logical rules that devices
must follow to communicate. Other documents may define some physical requirements for
networking, for example, it may define the voltage and current levels used on a particular
cable. Collectively, the documents referenced in a networking model define all the details
of how to create a complete working network.
To create a working network, the devices in that network need to follow the details
referenced by a particular networking model. When multiple computers and other
networking devices implement these protocols, physical specifications, and rules, and
the devices are then connected correctly, the computers can successfully communicate.
You can think of a networking model as you think of a set of architectural plans for building
a house. Sure, you can build a house without the architectural plans, but it will work better
if you follow the plans. And because you probably have a lot of different people working
on building your house, such as framers, electricians, bricklayers, painters, and so on, it
helps if they can all reference the same plan. Similarly, you could build your own network,
write your own software, build your own networking cards, and create a network without
using any existing networking model. However, it is much easier to simply buy and use
products that already conform to some well-known networking model. And because the
networking product vendors use the same networking model, their products should work
well together.
The CCNA exams include detailed coverage of one networking model—the Transmission
Control Protocol/Internet Protocol, or TCP/IP. tcp/ip is the most pervasively used
networking model in the history of networking. You can find support for tcp/ip on
practically every computer operating system in existence today, from mobile phones to
mainframe computers. Almost every network built using Cisco products today supports

TCP/IP. Not surprisingly, the CCNA exams focus heavily on TCP/IP.

Foundation Topics



The TCPLIP and OSI fhgw,v avp vhzu ,llju vhzu tcpLip

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