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Table Of Contents  The TCP/IP Guide
 9  TCP/IP Application Layer Protocols, Services and Applications (OSI Layers 5, 6 and 7)
      9  TCP/IP Key Applications and Application Protocols
           9  TCP/IP File and Message Transfer Applications and Protocols (FTP, TFTP, Electronic Mail, USENET, HTTP/WWW, Gopher)
                9  Usenet (Network News) and the TCP/IP Network News Transfer Protocol (NNTP)
                     9  Usenet Overview, Concepts and General Operation

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Usenet Communication Model: Message Composition, Posting, Storage, Propagation and Access
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Usenet Message Format and Special Headers
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Usenet Addressing: Newsgroups, Newsgroup Hierarchies and Types
(Page 3 of 4)

Other Newsgroup Hierarchies

For those who prefer a more free-wheeling environment and do not want to submit to the Big Eight procedures, there is the “alternative” Usenet hierarchy, which begins with the hierarchy name alt. This hierarchy includes many thousands of groups. Some are quite popular, but many are not used at all; this is a side-effect of the relative ease with which an alt group can be created.

In addition to these nine hierarchies there are dozens of additional, smaller hierarchies. Many of these are regional or even company-specific. For example, the “ne.” hierarchy contains a set of newsgroups discussing issues of relevance to New England; “fr.*” covers France, and “de.*” Germany. Microsoft has its own set of public newsgroups in the “microsoft.*” hierarchy. Figure 311 shows the Big Eight hierarchies and some of the other hierarchies that exist.


Figure 311: Usenet Newsgroup Hierarchies

Usenet newsgroups are arranged into tree-like structures called hierarchies. Eight of these are centralized, widely-used, general-purpose hierarchies, which are today called the “Big Eight”. The “alternate” (“alt”) hierarchy is a very loosely-structured set of thousands of groups covering every topic imaginable. In addition to these, there are many hundreds of regional, private and special-purpose hierarchies.

 


Key Concept: Usenet messages are not addressed to individual users; rather, they are posted to newsgroups. Each newsgroup represents a topic; those with an interest in the subject of a group can read messages in it, and reply to them as well. Usenet newsgroups are arranged into tree-like hierarchies that are similar in structure to DNS domains. Many of the most widely-used newsgroups are found in a collection of general-interest hierarchies called the Big Eight. There are also many regional and special-purpose hierarchies.



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Usenet Communication Model: Message Composition, Posting, Storage, Propagation and Access
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12
3
4
Next Page
Usenet Message Format and Special Headers
Next Topic/Section

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