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Changes between Version 7 and Version 8 of ChapterNetworking

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Author:
JJR (IP: 207.194.36.253)
Timestamp:
04/09/07 02:01:30 (17 years ago)
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minor update

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  • ChapterNetworking

    v7 v8  
    3232These protocols are rules that state how network components agree to communicate. They are integrated into hardware or software and are present in multiple levels of any network model. 
    3333 
    34 Networks have come into such prominence that eventually a standard model was designed to describe how to connect combinations of devices for communication. (Complete Encyclopedia of Networking, p 727).  The Open Systems Interconnection (OSI Reference Model) is a seven-layer model meant to demonstrate the functional layers of a network and the features available in each layer.  
     34Networks have come into such prominence that eventually a standard model was designed to describe how to connect combinations of devices for communication. (Complete Encyclopedia of Networking, p 727).  The Open Systems Interconnection (OSI Reference Model) is a seven-layer model meant to demonstrate the functional layers of a network and the features available in each layer. (p 727)  
    3535 
    36 A layer represents a high or low level contributer to the whole network model.  For example, a software application with its protocols represents the highest level Application Layer of the OSI (FTP and Telnet are application layer protocols); TCP and UDP protocols represent a middle layer called the Transport Layer; and the transmission line (wired or wireless) represents the the lowest layer called the Physical Layer. (Ibid. p 734) See the figure for a full view of the seven layer model. 
     36A layer represents a high or low level contributer to the whole network model.  For example, a software application with its protocols represents the highest level Application Layer of the OSI (FTP and Telnet are application layer protocols); TCP and UDP protocols represent a middle layer called the Transport Layer; and the transmission line (wired or wireless) represents the the lowest layer called the Physical Layer. (Ibid. p 734) See the figure for a full view of the seven layer model. (need to add picture here) 
    3737 
    3838The OSI model acts as a guideline only, an abstract breakdown of how network systems operate.  Most networks systems with their operating system will implement most of these layers, but they won't be so clearly defined. Some layers may be logically merged for convenience; practicality wins out over theory in these cases.