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A network is a structure linking computers
together for the purpose of sharing information and services
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Users typically access a network through a computer called a host or node
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SERVER
A node that provides information or a service is called a server
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CLIENT
A computer or other device that requests services from a server is called a client
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LOCAL AREA NETWORK (LAN)
If the computers that make up a network are close together (within a single department or building), then the network is referred to as a local area network (LAN)
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WIDE AREA NETWORK
A network that covers a wide area, such as several buildings or cities, is called a wide area network (WAN)
The largest WAN in existence is the Internet
In its early days, the Internet was called ARPANET
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HYPERTEXT
Hypertext is a method of organizing information that gives the reader control over the order in which the information is presented
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WEB SERVERS
- Web pages are stored on Web servers, which are computers that make Web pages available to any device connected to the Internet
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WEB BROWSER
A Web browser retrieves the page from the Web server and renders it on the user’s computer or other device
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HYPERTEXT MARKUP LANGUAGE
A Web page is a text file written in a language called Hypertext Markup Language
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MARKUP LANGUAGE
A markup language is a language that describes a document’s content and structure
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XML
XML (Extensible Markup Language) is a metalanguage like Standard Generalized Markup Language (SGML), but without SGML’s complexity and overhead
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XHTML
XHTML (Extensible Hypertext Markup Language) is a stricter version of HTML and is designed to confront some of the problems associated with the different and competing versions of HTML
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HTML CONVERTER
HTML Converter – translates formatted text into HTML code
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HTML EDITOR
HTML Editor – helps you create an HTML file by inserting HTML codes for you as you work
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ELEMENT
An element is a distinct object in the document, like a paragraph, a heading, or a page’s title
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TAG
The core building block of HTML is the tag, which marks the presence of an element
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TWO-SIDED TAG
A two-sided tag is a tag that contains some document content General syntax for a two-sided tag: <element>content</element>
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<HTML> tag
The opening <html> tag marks the start of an HTML document, and the closing </html> tag tells a browser when it has reached the end of that HTML document
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HEAD ELEMENT
The head element contains information about the document, for example the document title or the keywords
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BODY ELEMENT
The body element contains all of the content to appear on the Web page the body element can also contain code that tells the browser how to render the content
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TITLE ELEMENT
The title element contains the page’s title A document’s title is usually displayed in the browser’s title bar
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Converting HTML file into an XHTML file
You can convert an HTML file into an XHTML file by replacing the opening <html> tag with the following three lines of code:
–<?xmlversion="10" encoding="UTF-8"standalone="no"?>
–<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 10 Strict//EN”“http://wwww3org/TR/xhtml1/DTD/xhtml11-strictdtd">
– <html xmlns=http://wwww3org/1999/xhtml>
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COMMENT TAG
The comment tag adds notes to your HTML code:
<!--comment -->
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MARKING A HEADER
To mark a heading, enter
<hn>content</hn>
where "n" is an integer from 1 to 6 and content is the text of heading
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MARK A PARAGRAPH
To mark a paragraph, enter
<p>content</p>
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MARKING A BACK QUOTE
To mark a block quote, enter
<blockquote>content</blockquote>
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MARKING A GENERIC BLOCK-LEVEL ELEMENT
To mark a generic block-level element, enter
<div>content</div>
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EXTENDED BLOCK QUOTE
The syntax for making an extended quote is
<blockquote>content</blockquote>
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ORDERED LIST
List items that need numerical order.
Syntax:
- <ol>
- <li>item1</li>
- <li>item2</li>
- </ol>
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UNODERED LIST
List items that do not need an order
Syntax:
- <ul>
- <li>item1</li>
- <li>item2</li>
- </ul>
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ADDRESS ELEMENT
HTML supports the address element to indicate contact information
Syntax:
<address>........</address>
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LOGICAL ELEMENT
A logical element describes the nature of the enclosed content, but not necessarily how that content should appear
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PHYISICAL ELEMENT
A physical element describes how content should appear, but doesn’t indicate the content’s nature
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PRESENTATIONAL ATTRIBUTES
Presentational attributes specify exactly how the browser should render an element
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LINE BREAK
The one-sided tag to mark a line break is:
–<br />
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HORIZONTAL RULE ELEMENT
The horizontal rule element places a horizontal line across the Web page:
<hr />
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INLINE IMAGE
An inline image displays a graphic image located in a separate file within the page:
<img src="file" alt="text" />
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