The main Internet Applications are to be found in the Internet Tools from Windows. Please look at the Main Index of the On-Line Series to see if a Course regarding that topic is on-line already.
helps you to find files by name that are located on FTP servers.
To learn how to use it double click on WSARCHIE icon from Internet Tools Window and then click on Help.
tells you if an indicated host is alive.
is an application by means of which you can transfer files around the Internet. For Help click on WS-FTP from Internet Tools and then on Help bottom bar. You’ll see the FTP Client Help Index.
is a tool for gathering information in a network of computers using a menu system. To use it click on WS-GOPHER icon from Internet Tools , on Help from Main Menu Commands and then on Index. You will see the WS-Gopher Help Contents with more details.
permits logging into other computers and use their resources. For Telnet into another computer on the Internet you must know its domain name (DNS) (something like: eelab.usyd.edu.au) or its IP address (something like: 129.78.99.2) and you must have an account on it.
The Internet
is a worldwide collection of thousands of interconnected computers.
The World Wide Web (WWW from now on) is the
universe of network-accessible information, an embodiment of human knowledge.
It is the fastest-growing service of the Internet today. It offers an almost
unlimited potential for organizations to market their products and services,
as well as communicate more easily and effectively with each other’s.
It has a body of software, and a set of protocols and conventions. The WWW
uses hypertext and multimedia techniques to make the Web easy for anyone
to roam, browse, and contribute to.
Web pages are written in HyperText Markup Language
(HTML), a text-based language. HTML is a way of adding various attributes
to plain text files, which are published on the WWW. HTML lets you mix graphics
with text, change appearance of text, and create hypertext documents, which
interact with the user. To write pages for the WWW either you learn the
HTML language or use one of the existing Web Editors: Microsoft FrontPage,
Internet Assistant, HotDog, Macromedia Dreamweaver and others.
To see the Pages published on Web you have to use Web Browsers like Netscape
Communicator, Microsoft Internet Explorer and others.
The difference between an HTML document and a word processing document is
that the same HTML document can be read on many different computer platforms,
for example PC, Macintosh and UNIX.
What’s a URL
A URL is a Uniform Resource Locator . Think of it as a networked extension
of the standard filename concept: not only you point to a file in a directory,
but that file and that directory can exist on any machine on the network,
can be served via any of several different methods. URLs can also point
to queries, documents stored deep within databases, the results of an Internet
utility command, or whatever.
In essence the URL concept is this:” if it’s out there,
we can point at it”.
URLs are of more types. The most common types are the following:
• File URLs: have the form: file://domain_name/directory(ies)/file
• HTTP URLs: HTTP stands for HyperText Transport Protocol and is the standard
format of the WWW documents. http://domain-name/directory/...directory/file.htm(html)
• News URLs: for accessing newsgroups and change information between the
subscriber of different newsgroups. newsrc://news_server_domain_name
the domain name for the university news server is:
newsrc://news.usyd.edu.au/
This concludes this lesson of PC Computing. Please return to the PC Index
and continue with the next lesson.
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