networking curriculum
support CD for senior
secondary studies

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networking > protocols > nntp

NNTP

This protocol allows users to post messages to a server. The server has a hierarchy of groups that organise the general trend of the messages posted. Users can also logon and download any messages that have been posted into specific groups. However there are many servers on the Internet that hold the structure of the groups and can receive and send requested posted messages. The servers must also support a "server to server" protocol that will allow the local posted messages to a server in one part of the world to be passed on to the other servers. This daisy chaining process circulates and continually updates all messages across the NNTP system.

Many of the NNTP systems are also run on single servers and do not circulate to other servers. These are usually used by companies to assist users of their products, e.g. Borland's user news groups. This service allows the posting of questions and requests, and hopefully other people will respond with assistance. These groups are also communities and have the usual social interactions. Often discussions can become polarised and heated and as a result not as productive for all who contribute to the groups. Other groups are moderated and users should not post directly to the group but via emails to a moderator who then decides whether to allow the posting or not. These groups are usually reserved for important information and will not be sidetracked by users personal issues. Superficially they appear like e-mail lists, but because the postings are shared around the world, the system is much more inclusive.

LINK: http://groups.google.com/

worksheets
. history
. why network
. osi model
. connecting
. protocols
. technology
. topologies (tla)
. issues
. network types
. design
. economics
. economics (cs)
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quizzes
. why network
. osi model
. connecting
. protocols
. technology
. topology
. issues
. network types
. design
. economics

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