3.2.2 world wide web (www)
TRANSCRIPT
![Page 1: 3.2.2 World Wide Web (WWW)](https://reader036.vdocuments.us/reader036/viewer/2022062400/5881c7981a28aba36a8b4599/html5/thumbnails/1.jpg)
Chapter Three
3.2 The Internet3.2.2 World Wide Web
3.2.2.1 Web Browser
At the end of this topic, students should be able to:
a. Explain the purpose of Web browser
b. List examples of Web browser
![Page 2: 3.2.2 World Wide Web (WWW)](https://reader036.vdocuments.us/reader036/viewer/2022062400/5881c7981a28aba36a8b4599/html5/thumbnails/2.jpg)
The World Wide Web
• The World Wide Web, or Web, consists of a worldwide collection of electronic documents (Web pages)
• A Web site is a collection of related Web pages and associated items
• A Web server is a computer that delivers requested Web pages to your computer
• Web 2.0 refers to Web sites that provide a means for users to share, modify, provide information
Discovering Computers : Chapter 2 2Pages 80 - 81
![Page 3: 3.2.2 World Wide Web (WWW)](https://reader036.vdocuments.us/reader036/viewer/2022062400/5881c7981a28aba36a8b4599/html5/thumbnails/3.jpg)
Web Page
• Web page is an electronic document on the Web, which can contain text, graphics, animation, audio, and video and often has built-in connections to other documents, graphics, Web pages, or Web sites
• Some Web pages are static (fixed); others are dynamic (changing).
• Visitors to a static Web page all see the same content. With a dynamic Web page, by contrast, visitors can customize some or all of the viewed content such as desired stock quotes, weather for a region, or ticket availability for flights.
3
![Page 4: 3.2.2 World Wide Web (WWW)](https://reader036.vdocuments.us/reader036/viewer/2022062400/5881c7981a28aba36a8b4599/html5/thumbnails/4.jpg)
Web Browser
• A Web browser, or browser, allows users to access Web pages and Web 2.0 programs
• Most current browsers support tabbed browsing.
4
Internet Explorer Firefox Opera
SafariGoogle Chrome
![Page 5: 3.2.2 World Wide Web (WWW)](https://reader036.vdocuments.us/reader036/viewer/2022062400/5881c7981a28aba36a8b4599/html5/thumbnails/5.jpg)
5
![Page 6: 3.2.2 World Wide Web (WWW)](https://reader036.vdocuments.us/reader036/viewer/2022062400/5881c7981a28aba36a8b4599/html5/thumbnails/6.jpg)
Home Page
• A home page is the first page that a Web site displays
• Web pages provide links to other related Web pages– Surfing the Web
• Downloading is the process of receiving information
6
• Some Web pages are designed specifically for microbrowsers
![Page 7: 3.2.2 World Wide Web (WWW)](https://reader036.vdocuments.us/reader036/viewer/2022062400/5881c7981a28aba36a8b4599/html5/thumbnails/7.jpg)
Chapter Three
3.2 The Internet3.2.2 World Wide Web
3.2.2.2 Web Address
At the end of this topic, students should be able to:
Identify the components of Web address
![Page 8: 3.2.2 World Wide Web (WWW)](https://reader036.vdocuments.us/reader036/viewer/2022062400/5881c7981a28aba36a8b4599/html5/thumbnails/8.jpg)
Web Address
• A Web page has a unique address called a uniform Resource Locator (URL) or Web address
• For example, the home page for the KMPk Web site has http://www.kmpk.matrik.edu.my as its Web address. A Web browser retrieves a Web page using its Web address.
• A Web address consists of a protocol, host name, domain name, path and web page name or file name. Web page addresses begin with http:// or https://.
8
![Page 9: 3.2.2 World Wide Web (WWW)](https://reader036.vdocuments.us/reader036/viewer/2022062400/5881c7981a28aba36a8b4599/html5/thumbnails/9.jpg)
9
![Page 10: 3.2.2 World Wide Web (WWW)](https://reader036.vdocuments.us/reader036/viewer/2022062400/5881c7981a28aba36a8b4599/html5/thumbnails/10.jpg)
http://• The http, which stands for Hypertext Transfer Protocol, is a set of rules
that defines how pages transfer on the Internet.
https://• Protocol for secured web pages
Other types of protocol• ftp://
– FTP (File Transfer Protocol) is an Internet standard that permits file uploading and downloading with other computers on the Internet.
• SMTP (simple mail transfer protocol) used by mail server– is a communications protocol used by some outgoing mail servers.
• POP 3(Post Office Protocol ) used by mail clients– is a communications protocol used by some incoming mail servers.
10
![Page 11: 3.2.2 World Wide Web (WWW)](https://reader036.vdocuments.us/reader036/viewer/2022062400/5881c7981a28aba36a8b4599/html5/thumbnails/11.jpg)
Chapter Three
3.2 The Internet3.2.2 World Wide Web
3.2.2.3 Web Page Navigation
At the end of this topic, students should be able to:
Identify different ways of navigation
![Page 12: 3.2.2 World Wide Web (WWW)](https://reader036.vdocuments.us/reader036/viewer/2022062400/5881c7981a28aba36a8b4599/html5/thumbnails/12.jpg)
• The home page usually contains links to other documents, Web pages, or Web sites.
• A link, short for hyperlink, is a built-in connection to another related Web page or part of a Web page.
• Most Web pages contain hypertext or hypermedia links.
12
Navigating Web Pages
![Page 13: 3.2.2 World Wide Web (WWW)](https://reader036.vdocuments.us/reader036/viewer/2022062400/5881c7981a28aba36a8b4599/html5/thumbnails/13.jpg)
• Hypertext refers to links in text-based documents, whereas hypermedia combines text-based links with graphic, audio, and video links.
• Links allow you to obtain information in a nonlinear way. That is, instead of accessing topics in a specified order, you move directly to a topic of interest.
• Branching from one related topic to another in a nonlinear fashion is what makes links so powerful.
13
Hypertext and Hypermedia
![Page 14: 3.2.2 World Wide Web (WWW)](https://reader036.vdocuments.us/reader036/viewer/2022062400/5881c7981a28aba36a8b4599/html5/thumbnails/14.jpg)
• Surfing the web - The activity of using links to explore the web
• Most current web browsers support tabbed browsing
• Tabbed browsing allows you to open and view multiple Web pages in a single Web browser window
14Page 84 Figure 2-9
Hypertext and Hypermedia
![Page 15: 3.2.2 World Wide Web (WWW)](https://reader036.vdocuments.us/reader036/viewer/2022062400/5881c7981a28aba36a8b4599/html5/thumbnails/15.jpg)
15Page 84 Figure 2-9
![Page 16: 3.2.2 World Wide Web (WWW)](https://reader036.vdocuments.us/reader036/viewer/2022062400/5881c7981a28aba36a8b4599/html5/thumbnails/16.jpg)
Chapter Three
3.2 The Internet3.2.2 World Wide Web
3.2.2.4 Web Searching
At the end of this topic, students should be able to:
Explain two types of search tools
![Page 17: 3.2.2 World Wide Web (WWW)](https://reader036.vdocuments.us/reader036/viewer/2022062400/5881c7981a28aba36a8b4599/html5/thumbnails/17.jpg)
Web Searching
• Two types of search tools are search engines and subject directories
17
Search engine
A software use to find websites, web pages, images, videos, news,
maps and other information related to a
specific topic
Subject directory
Classifies Web pages in an organized set of
categories such as sports or shopping
![Page 18: 3.2.2 World Wide Web (WWW)](https://reader036.vdocuments.us/reader036/viewer/2022062400/5881c7981a28aba36a8b4599/html5/thumbnails/18.jpg)
Discovering Computers 2011: Living in a Digital World Chapter 2
18
![Page 19: 3.2.2 World Wide Web (WWW)](https://reader036.vdocuments.us/reader036/viewer/2022062400/5881c7981a28aba36a8b4599/html5/thumbnails/19.jpg)
Discovering Computers 2011: Living in a Digital World Chapter 2
19
Search Engine (Keyword search)
• Search engines require that you enter a word or phrase, called search text or search query, that describes the item you want to find.
• Each word in the search text is known as a keyword.• Search engines often respond with thousands of results,
whose content varies depending on the type of information you are seeking.
• A search engine is helpful in locating items such as:
Images Videos Audio News
Maps People or Businesses Blogs
![Page 20: 3.2.2 World Wide Web (WWW)](https://reader036.vdocuments.us/reader036/viewer/2022062400/5881c7981a28aba36a8b4599/html5/thumbnails/20.jpg)
Discovering Computers 2011: Living in a Digital World Chapter 2
20
![Page 21: 3.2.2 World Wide Web (WWW)](https://reader036.vdocuments.us/reader036/viewer/2022062400/5881c7981a28aba36a8b4599/html5/thumbnails/21.jpg)
• Some Web browsers contain an Instant Search box to eliminate the steps of displaying the search engine’s Web page prior to entering the search text
21
![Page 22: 3.2.2 World Wide Web (WWW)](https://reader036.vdocuments.us/reader036/viewer/2022062400/5881c7981a28aba36a8b4599/html5/thumbnails/22.jpg)
• Search operators can help to refine your search
22
![Page 23: 3.2.2 World Wide Web (WWW)](https://reader036.vdocuments.us/reader036/viewer/2022062400/5881c7981a28aba36a8b4599/html5/thumbnails/23.jpg)
Discovering Computers 2011: Living in a Digital World Chapter 2
23
Subject Directory (Directory search)
• A subject directory provides categorized lists of links arranged by subject.
• Using this search tool, you locate a particular topic by clicking links through different levels, moving from the general to the specific
• Disadvantage with a subject directory is that users have difficulty deciding which categories to choose as they work through the menus of links presented
![Page 24: 3.2.2 World Wide Web (WWW)](https://reader036.vdocuments.us/reader036/viewer/2022062400/5881c7981a28aba36a8b4599/html5/thumbnails/24.jpg)
Discovering Computers 2011: Living in a Digital World Chapter 2
24