Things you need to know about

internet

WHAT IS INTERNET?The Internet is an integral part of our everyday lives. In the early days, most people just used the Internet to search for information. Today's Internet is a constantly evolving tool that not only contains an amazing variety of information but that also provides new ways of accessing, interacting, and connecting with people and content.

Did you know? The foundation of the Internet began in 1969, when the U.S. Department of Defense created ARPAnet, a project to allow military personnel to communicate with each other in an emergency.

Here is the BBN team, known as the "IMP guys", who deployed ARPANET in 1969.

More about internet History

• By 2012, the number of Internet users worldwide reached 2.4 billion—about one-third of the world's population.

• To store all of the information that's available on the Internet, you would need more than 1 billion DVDs or 200 million Blu-ray discs.

Things you can do on the internet

VOIPVoice over Internet Protocol (VoIP), also known as internet telephone, allows a user to have telephone service through an internet connection. Some people find that they can save money by using VoIP instead of purchasing a separate telephone service. One example is Skype.

EmailEmail (short for "electronic mail") is a system for sending and receiving messages online.

SOCIAL NETWORKINGSocial networking refers to online services that allow people to interact with each other and stay connected with friends, family, and people around the world. Examples include Facebook and Twitter. Some social networking sites, such as LinkedIn, focus on career networking.

ONLINE CHAT (instant messaging)Online chat is a system that allows users to communicate in real time. Unlike e-mail, all messages show up immediately in the same window, which makes conversations quicker and easier. Instant messaging is a type of chat where you communicate with a specific person instead of an entire chat room.

BLOG"Blog" is short for "web log." It's a type of web site that is usually updated frequently, often with news articles or random thoughts. Some sites, such as blogger.com, allow you to create and edit your own blog for free.

StreamingIf you watch a movie online or listen to iTunes radio, it's called streaming media, which means it plays while downloading so you don't have to wait for it to download first. The media starts downloading a little bit before it starts playing (called "buffering") so that it can play more smoothly. ITunes, YouTube….etcITunes, YouTube….etc

WIKI• A wiki is a type of website that allows content to be edited or

created by anyone. This allows content to stay up to date and (ideally) allows for errors to be found and corrected. Examples include Wikipedia, which is an encyclopedia, and wikiHow, which is a collection of how-to guides.

Webcast/PodcastWith a podcast, you can subscribe to a series of audio or video files that will automatically be downloaded to your computer. The files can then be played on the computer or an mp3 player. A podcast is basically a web feed for media. Unlike internet radio, podcasts are not streaming, so the media has to download fully before it can be played.

Social bookmarking• Social bookmarking allows users all over the internet to

save and share interesting sites. Examples include Reddit and Delicious.

• Some social bookmarking sites are mainly used to share photos that people have found around the web. Pinterest (shown below) is an example of this type of site.

What is the Internet?The Internet is the largest computer network in the world, connecting millions of computers. A network is a group of two or more computer systems linked together.

Main types of computer networks:• Local Area Network (LAN): A LAN is two or more

connected computers sharing certain resources in a relatively small geographic location, often in the same building. Examples include home networks and office networks.

Wide Area Network (WAN): A WAN typically consists of two or more LANs.

A PERSONAL AREA NETWORK – PAN – is a computer network built around an individual person. Personal area networks usually are a mobile computer, a mobile phone and/or a handheld computing device such as a tablet, netbook or a PDA.

A Metropolitan Area Network (MAN) is a large computer network that spans a metropolitan area or campus.

Servers and clientsYou may have heard someone say something like "The server is down" or "We're having problems with the e-mail server." A server is a computer that "serves" many different computers in a network by running specialized software and storing information. For example, webpages are stored on servers.When you access a webpage, your computer is acting as a client. A client runs familiar software such as web browsers or email software, and it communicates with the server to get the information it requires.

In order for your browser to display a webpage, it requests data from the server where the page is stored. The server processes the request, then sends the data to your browser, where it is displayed.

The World Wide WebWhen most people think of the Internet, the first thing they think about is the World Wide Web. Nowadays, the terms "Internet" and "World Wide Web" are often used interchangeably—but they're actually not the same thing.The Internet is the physical network of computers all over the world.The World Wide Web is a virtual network of websites connected by hyperlinks (or "links"). Websites are stored on servers on the Internet, so the World Wide Web is a part of the Internet.

To get to a webpage, you can type the URL (Uniform Resource Locator) into a browser. The URL, also known as the web address, tells the browser exactly where to find the page.

URL

How the Internet WorksWhat is a domain name? Text version of Internet protocol (IP) address

Number that uniquely identifies each computer or device connected to Internet

Finding information online

The most common way to find information online is with a search engine. There are many different search engines you can use, but Google is the most popular one.

Using GoogleUsing Google

Searching with GoogleSearching with Google

Passwords: The first step to safety

Most people don't put a lot of thought Most people don't put a lot of thought into into creating a passwordcreating a password. It's usually . It's usually easiest just to create a short, easy-to-easiest just to create a short, easy-to-remember password, or even just to use remember password, or even just to use the same password for every account the same password for every account you have. After all, the average person you have. After all, the average person probably won't be able to guess your probably won't be able to guess your passwordpassword

MORE ON PASSWORDMORE ON PASSWORDHowever, hackers often use password-cracking software that can keep testing many different passwords until they find the correct one, and they can easily crack weak passwords. By creating strong passwords, you can greatly reduce the chance that your personal or financial information will be stolen.

Common password mistakes

Many people create passwords based on their spouse's names, a hobby, or a simple pattern, since those types of passwords are easy to remember. Unfortunately, they are also very easy for hackers to guess. To create a strong password, you will need to avoid these types of common mistakes.

How to open email address

Using the Internet in the future

The Internet is always changing, and the ways in which we access it will also continue to change. Technology will continue to become more common and integrated into our everyday lives.

How do I connect to the How do I connect to the Internet?Internet?

Once you've set up your computer, you'll probably want to get Internet access so you can send and receive email, browse the web, watch movies, and do more. Before you can access the Internet, though, there are three things you need: Internet service, a modem, and a web browser.

Choosing an Internet Choosing an Internet serviceservice

It all depends on where you live and how much speed you need. Internet service providers (ISPs) usually offer different levels of speed based on your needs.If you're mainly using the Internet for e-mail and social networking, a slower connection might be all you need, but if you want to download a lot of music or watch streaming movies, you'll want a faster connection.

Types of Internet service

1.1.RJ45 Network cable -RJ45 Network cable -2.2.RJ11 telephone cable. RJ11 telephone cable. 3.3.Six lead specialized phone Six lead specialized phone

cablecable4.4.USB cable. USB cable.

The World Wide WebWhat is a search engine? Program used to find

Web sites and Web pages by entering words or phrases called search text

The World Wide WebWhat are the eleven basic types of Web sites? Portal News Informational Business/Marketing Educational Entertainment Advocacy Blog Wiki Content Aggregator Personal

The World Wide WebWhat is a portal? A Web site that offers a variety of services from one,

convenient location, usually for free Searching, sports, e-mail,

news, weather, auctions, Web communities (Web sites that join people with similar interests)

The World Wide WebWhat is a news Web site? Contains newsworthy material Stories and articles relating to current events, life,

money, sports, and the weather

The World Wide WebWhat is an informational Web site? Contains factual information Created by organizations and government agencies

The World Wide WebWhat is a business/marketing Web site? Contains content that promotes products or services Allows you to purchase products or services online

The World Wide WebWhat is an educational Web site?

Some companies offer online training for employees

Some colleges offer online classes and degrees

Offers avenues for formal and informal teachingand learning

The World Wide WebWhat is an entertainment Web site? Offers an interactive and engaging environment

featuring music, video, sports, games, and more

The World Wide WebWhat is an advocacy Web site? Contains content that describes a cause, opinion,

or idea

The World Wide WebWhat is a blog? Uses a regularly updated journal format to reflect the

interests, opinions, and personalities of the author and sometimes site visitors

The World Wide WebWhat is a wiki? Collaborative Web site that allows users to add to,

modify, or delete the Web site content via their Web browser

The World Wide WebWhat is a content aggregator? Business that gathers and organizes Web content and

then distributes, or feeds, the content to subscribers for free or a fee

The World Wide WebWhat is a personal Web site? Web page maintained by private individual Reasons: sharing life experience with the world

or job hunting