tailieunhanh - Networking: A Beginner’s Guide Fifth Edition- P25

Networking: A Beginner’s Guide Fifth Edition- P25:I have run into many people over the years who have gained good even impressive working knowledge of PCs, operating systems, applications, and common problems and solutions. Many of these people are wizards with desktop computers. | 102 Networking A Beginner s Guide TIP Recent versions of Windows also support FTP connections using Internet Explorer. Just open Internet Explorer and instead of entering an http address in the address bar type an address preceded by ftp . For example to connect to Microsoft s FTP server you would use the address ftp . This trick also works in most other current web browsers such as Mozilla Firefox. Note that for FTP sites that require a login the browser must support logging in. In Internet Explorer a Logon As option is available on the File menu after you browse to an FTP site. Network News Transfer Protocol NNTP Usenet NetNews is a set of discussion groups devoted to an extremely wide variety of topics. There are well over 100 000 such such groups in existence. Usenet conversations are posted to Usenet servers which then echo their messages to all other Usenet servers around the world. A posted message can travel to all the Usenet servers in a matter of hours and then be available to users accessing any particular Usenet server. Usenet discussion groups are loosely organized into the branches of a tree. The following are some of the main branches Alt for discussions about alternative lifestyles and other miscellaneous topics Comp for computer-oriented discussions Gov for government-oriented discussions Rec devoted to recreational topics Sci for science-based discussions Usenet groups can either be public which are echoed to other Usenet servers or private which are usually hosted by a particular organization and require the user to enter appropriate login credentials before reading and posting messages. The NNTP protocol is what makes Usenet possible. It allows for a connection between a Usenet reader also called a news reader and a Usenet server. It also provides for message formatting so messages can be text-based or can also contain binary attachments. Binary attachments in Usenet postings are usually encoded using Multipurpose Internet .

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