The USSR 's launch of Sputnik spurred the United States to create the Advanced Research Projects Agency (ARPA or DARPA) in February 1958 to regain a technological lead. On October 29, 1969 in Menlo Park, California ARPA made a demonstration of communication between computers, through the exchange of packets. Thus, two computers are networked, which eventually grew and became known as ARPANET. In the coming years ARPANET became the worldwide network. The word Internet is first used to describe a single global computer network that uses the protocol stack TCP / IP then ARPANET was converted to operate on the basis of TCP / IP from January 1, 1983 begins to operate using TCP / IP. In next years the network became known as the Internet. On August 6, 1991 was published the draft World Wide Web.
Definition Simply, the Internet is a group of thousands of data or computer networks that are tied together via leased lines, or radio (shortwave through light frequencies) that share a common protocol called the Internet Protocol or IP. Explosive B. The Internet has grown exponentially since its development by the Defense Department’s (D)ARPA division just over 25 years ago. News Tools C. Until recently, one of the problems with using the Internet was that you needed to know the arcane &quot;language&quot; of UNIX®, because most of the Internet hosts ran UNIX. You also needed to know how to use very unfriendly Internet tools like FTP (File Transfer Protocol) and Telnet. In addition, as shown in Figure 1, just a few years ago there were few accessible sites on the Internet Ease Access D. Since the Internet was started by the DoD, tight restrictions were put on who could connect to and what sort of &quot;traffic&quot; would be allowed on the Internet. With the DoD’s departure, hundreds of Internet Service Providers (ISPs) have stepped in to provide access to the Internet.
He early work in packet switching They defined the &quot;Internet Protocol&quot; (IP) and participated in the development of TCP He developed HTTP to support a global hyper-text system called the World Wide Web
Ownership of the internet is a complicated issue. In theory, the internet is owned by everyone that uses it. There are many organizations, and service providers that all own pieces of the infrastructure There are, however, organizations that oversee and standardize what happens on the Internet and assign IP addresses and domain names , The Domain Name System (DNS) is the address system of the internet. Each domain name is linked to a unique IP address. Essentially, NSI was granted a monopoly of the public open domains. This monopoly gave NSI and the United States government significant control of the internet. The addition of these top level domains could lead to a more descriptive system of classification. but as the system stands today, it is difficult to tell what an individual might find at a given domain based on the domain name alone.
1. Through the computer and the Internet, you'll be able to discover new ways in getting hold of informative and useful information in almost any fields of studies, something that is imaginable and beyond what you can think of. Information that is definitely ready at your fingertips. 2. It has changed how you do business. Gone are the days of labor-intensive and manual way of inputting data through ink and paper. Now, with a few taps of keys and a few clicks of the mouse, good and productive business is on its way. 3. It opens new doors of opportunities and ventures. Apart from the way you do business, the computer and the Internet has also become your partner in doing business effectively, how your products are sold to vast numbers of consumers, and how services are provided.
Internet is very good
Blogging - a blog is used as communication platform to interact with people Shopping - you can find anything on the internet Networking – new way to communicate and share information E-mail - electronic mail, can be read anywhere and send from anywhere Research - the internet has a ton of information. Travel - you can travel all over the world through internet
Instant communication No Barriers to global information
A tool used for searching the www A client is the person using the internet Nearly all actions taken by a client requires one or more interaction with one or more server. ISP: The company that provides the client access to the internet . Websites: A website is a collection of files, images or videos that are accessible via the internet.
A web search engine is designed to search for informationon the world wide web. Search results are usually presented in a list called hits. Information may consist of web pages, images and other types of files. Some search engines also mine data available in databases or open directories. Most search engines operate algorithmically.
Internet bookmark , a pointer primarily to a web URL on the Internet. An example of bookmarks is to add a page you like on the internet and mark it for future reference by placing it into your list of favourites. This makes it easier and faster to locate. Social bookmarking , a method for internet users to store, organize, and share links to web pages. Enterprise bookmarking , a method of applying tags to data & content to improve enterprise searches.
Once on a website the user can use the various links within the site to navigate to another page or document within the same site. Hyperlinks present in resources enable users to easily navigate their browsers to related resources. HTTP the protocol used in conducting a search Yahoo the host of the website .com Domain names are used as identification labels to indicate ownership or control of a resource. News a specific section of the website you are on
Three examples of many sites that are available for this purpose are: Skype is a software application that allows users to make voice and video calls over the internet. It also allows the user to transfer files, Instant messaging and video conferencing. All these are free when used in conjunction With fellow skype users. Facebook is a social networking site which allows members free real time text/chat. You tube is a video sharing website in which users can upload, share and watch videos and is owned by the most used search engine in the world google.
A perfect example of downloading and saving files are through your e-mail . Any document, picture or file can be downloaded or saved from e-mail to Your computer all in a couple of clicks on the mouse. This is an easy way to move, share and save data as required.
Dongles Are devices which may be considered more secure due to the physical access required in order for it to be compromised
Iprism is a complete fitering solution that protects against spyware & inappropriate content.
A Firewall is considered a first line of defense in protecting private information Its also a barrier to keep destructive forces away from your property
Schools and personal administrators and faculty must be careful when becoming friends with employees students or Parents in Cyberspace
Encryption we know today is more complex it hides data extremely securely aiming to stop any unwanted access such as bank account information but remember no code is uncrackable
Commonly used for financial transactions where it is important to detect forgery and tampering signature Verifying Algorithm which given a message public key either accepts the message’s claim to Authenticity
Small pieces of information in test format that are downloaded to your computer when you visit sites
The History <ul><li>Sputnik </li></ul><ul><li>ARPANET </li></ul><ul><li>From ARPANET to WWW </li></ul>
INTERNET <ul><li>Definition of the Internet </li></ul><ul><li>Explosive Growth </li></ul><ul><li>New Tools </li></ul><ul><li>Ease of Access </li></ul>
People <ul><li>Leonard Kleinrock </li></ul><ul><li>Vint Cerf and Robert Kahn </li></ul><ul><li>Tim Berners-Lee </li></ul>
Who owns the Internet Domain Name System Conflicts in Domain Name System Control of Domain Name System
Global Network <ul><li>Instant Access Information </li></ul><ul><li>Fast Communication </li></ul><ul><li>Products and services </li></ul>
Internet Communications <ul><li>E-mail </li></ul><ul><li>Voice M ail </li></ul><ul><li>Fax </li></ul><ul><li>I nstant messaging </li></ul><ul><li>Video - con ferencing </li></ul>
Uses of Internet <ul><li>Shopping </li></ul><ul><li>E-Mail </li></ul><ul><li>Research </li></ul><ul><li>Travel </li></ul><ul><li>Networking </li></ul><ul><li>Blogging </li></ul>
Evaluation <ul><li>The world has become a global Village </li></ul>
Internet Connections <ul><li>Connection Methods </li></ul><ul><li>Cost Comparisons </li></ul><ul><li>How to obtain IP addresses and Domain Names </li></ul><ul><li>Minimum Hardware Requirements of Connection </li></ul><ul><li>Major Factors that Affect speed of Access </li></ul><ul><li>Internet service provider </li></ul>
Cost Comparisons <ul><li>The cost of broadband Internet service varies significantly by country and by region. </li></ul><ul><li>Broadband costs are lowest in urban areas and in price competition between service providers. </li></ul><ul><li>The cost falls rapidly as base grows and technology continues to improve. </li></ul><ul><li>Overall subscription charges are important. </li></ul><ul><li>Speed of the connation/ Income generated. </li></ul>
How to obtain IP addresses and Domain Names <ul><li>Top Level Domain (TLD) </li></ul><ul><li>Domain Name </li></ul><ul><li>Host Name </li></ul><ul><li>Method/Scheme </li></ul><ul><ul><li>Example </li></ul></ul><ul><ul><li>http://Friends.facebook.com </li></ul></ul>
Minimum Hardware Requirements of Connection <ul><li>Internet connection. Broadband connection. </li></ul><ul><li>Windows 2000, Windows XP, Windows VISTA. </li></ul><ul><li>Pentium III running at 400Mhz or higher. </li></ul><ul><li>128MBs RAM. </li></ul><ul><li>5 GB or greater hard drive. </li></ul><ul><li>Internet Browser software. </li></ul>
Major Factors that Affect speed of Access <ul><li>What type of Internet Service Provider is being used. </li></ul><ul><li>Local traffic on the HUB of the ISP . </li></ul><ul><li>Server traffic of the ISP. </li></ul><ul><li>Traffic on the sites. </li></ul><ul><li>A virus </li></ul><ul><li>System processing speed. </li></ul>
Internet Service Provider <ul><li>Dial up </li></ul><ul><li>DSL </li></ul><ul><li>Broadband wireless access </li></ul><ul><li>Cable Internet </li></ul><ul><li>ISDN </li></ul><ul><li>Wi-Fi </li></ul>