Web browser, web address, web page navigation, web searching

WORLD WIDE WEB

A service of internet that was developed in the late 1960s.It emerged in the early 1990s.

Type of World Wide Web

• Web page
• Web site
• World wide web(WWW)
• Web server 
• Home page 

Web browser

Application software that allows users to access and view Web pages.

Example of web browser


                                  
      GOOGLE CHROME                           INTERNET EXPLORER                          MOZILLA FIREFOX                                      SAFARI


WEB ADDRESS

Has a unique address called a URL (Uniform Resource Locator) or Web address.Retrieves a Web page using its web address. 

Example of web address

 http://www.kmph.matrik.edu.my/fizik/index.html

It must consist 

• Protocol- http://
• Domain name-www.kmph.matrik.edu.my/
• Path-fizik/
• Web page name-index.html

Transfer Protocol

http://

-Hypertext Transfer Protocol

A set of rules that defines how pages transfer on the Internet

https://

-Hypertext Transfer Protocol Secure

-A protocol to provide an encrypted communication and secure identification of a network web server

-Often used for payment transactions on www.

ftp://

-File Transfer Protocol

-The File Transfer Protocol (FTP) is a standard network protocol used to transfer computer files from one host to another host over a TCP-based network, such as the Internet. 

WEB PAGE NAVIGATION

Navigating Web Pages:

• Hypertext-links in text based documents
• Hypermedia-combines text-based graphic,audio and video links

Tab browsing

Most current web browsers support tabbed browsing.Tabbed browsing allows you to open and view multiple Web pages in a single Web browser windows

WEB SEARCHING

A primary reason that people use the Web is to search for specific information, including text, pictures, music and video.The first step in successful searching is to identify the main idea or concept in the topic about which you are seeking information.

Search tools:

• Search engine 
• Subject directory

Different types of Internet connection

 THE INTERNET CONNECTION

Types of internet connection

1)Dial-up connection

• Conventional
•  ISDN (Integrated Service Digital Network)

2) Broadband Internet

• DSL (Digital Subscriber Line)
•  Fiber To The Premises (FTTP)
•  Fixed Wireless
•  Cellular Radio Network 
•  Cable Internet Service
•  WiFi
•  Satellite Internet Service

Overview of the Internet

Internet
-Is a worldwide collection of network

Evolution of the internet

ARPANET

• ARPA-Advance Research Project Agency created by US Department of Defense 
• The network is call ARPANET
• The network became functional in September 1969

Who control the internet?
-No one-it is a public,cooperative and independent network
-Several organisation set standard

• Example of organisation:

World Wide Web Consortium that involved with issues such as:

1. Establishing the protocols
2. Making recommendations for changes 
3. Coordinating communication among the network 

Advantage and Disadvantage of internet

Advantages	Disadvantages
Easy to download software freely	Virus threat
Can make online transaction such as online banking,ticket booking and fliht ticket reservation	Sosial disconnect
People can send messages via email	Dangers to the children when using internet such as vulnerable pornographic sites
Can find information by using internet search engine	Information can be accesed by irresponsible person

Advantage and Disadvantage of intranet

ADVANTAGE	DISADVANTAGE
Commersial and confidential data is kept secure within the organization	High financial cost incurred by the company when initially implementing the intrane
Email remail private and may also may be encrypted	Connections between intranet potentially compromises security,by allowing virus infections or system hacking
High bandwith.No connection limits unlike the internet	Staff needs training to ensure workers know how to use the system effectively
Reliable.The company will have dedicated IT personnel to keep things running smoothly	Information overload because it reduces productivity

Advantage and Disadvantage of Extranet

ADVANTAGE	DISADVANTAGE
Enchanged large volumes of fata using electronic data interchange(EDI)	Extranet can be expesive to implement and maintain within an organization
Share products catalogs exclusively with trade partners	Security of extranet can be a concern when hosting valuable or propritary information