How Search Tools Works?

How Search Tools Works?

Explanation is here bellow ....!!

The Web can be incredible resource, providing information on nearly any topic imaginable. Are you planning a trip? Writing an economics paper? Looking for a movie review? Trying to locate a long-lost friend? Information sources related to these questions, and much, much more, are available on the web. With over 20 Billions pages and more being added daily, the web is a massive collection of interrelated pages. With so much available information, locating the precise information you need can be difficult. Fortunately, a number of organizations called search services operate Web sites that can help you locate information you need. They maintain huge databases relating to information provided on the web and the Internet.

The information stored at these databases includes addresses, content descriptions or classifications, and keywords appearing on Web pages and other Internet Informational resources. Special Programs called Spiders continually look for new information and update the search services’ databases. Additionally, search services provide special programs called search engines that you can use to locate specific information on the web.

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Do You Know The Concept of Instant Messaging (IM)?

Do You Know The Concept of Instant Messaging (IM)? If You Want to know so see the following Information......!!

Instant messaging (IM) allows two or more people to contact each other via direct, live communication. To use instant messaging, you register with an instant messaging server and then specify a list of Friends. Whenever you connect to the Internet, special software informs your messaging server that you are online. In response, the server will notify you if any of your friends are online. At the same time, it notifies your friends that your friends are online. You can then send messages directly back and forth to one another. Most instant messaging programs also include video conferencing features, file sharing, and remote assistance. Many businesses routinely use these instant messaging features.


The Most widely used instant messaging services are Rediff BOL Instant Messenger, Microsoft’s MSN Messenger, one limitation, however, is that many instant messaging services do not support communication with other services. For example, at the time of this writing,  a user registered with yahoo cannot use yahoo’s instant messenger to communicate with a user registered with Rediff BOL. Recently, however, some software companies have started providing universal instant messenger programs that overcome this limitation. For example, Gain Odigo, and Trillian provide instant messaging services that do
support communication with other services.

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Similarity Of The Internet and the Telephone System

The Internet and the telephone system are similar-you can connect a computer to the Internet much like you connect a phone to the telephone system. Once you are on the internet, your computer becomes an extension of what seems like a giant computer-a computer that branch all over the world. When provided with a connection to the Internet, you can use a browser program to search Web.

PROVIDERS

The most common way to access the Internet is through an Internet service provider (ISP). The providers are already connected to the Internet and provide a path or connection for individuals to access the Internet. Your college or university most likely provides you with free access to the Internet either through its local area networks or through a dial-up or telephone connection. There are also some companies that offer free Internet access.

  The most widely used commercial Internet service providers are national and
wireless providers.

•    National service providers like BSNL (Bharat Sanchar Nigam Limited), VSNL (Videsh Sanchar Nigam Limited) are the widely used. They provide access through standard telephone or cable connections. Users can access the Internet from almost anywhere within the country for a standard fee without incurring long-distance telephone charges.

•    Wireless service providers offer Internet connections for computers with wireless modems and a wide array of wireless devices. As we will discuss In Chapter 9, users connect to ISPs using one of a variety of connection technologies including DSL, cable, and wireless modems.

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