Page 14 - Trackpad_V5_Book 8
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It has two main functions: host or network interface identification and location addressing. IP                           Bandwidth is generally in bits per second (bps) or Bytes per second (Bps), Kilobytes per second
            addresses are written and displayed in human-readable notations, such as 172.16.254.1.                                    (Kbps) and Megabytes per second (Mbps). There can be various types of bandwidths, which are
                                                                                                                                      network bandwidth, data bandwidth, or digital bandwidth.
            DNS

            Domain Name System (DNS) is a naming system for assigning a name to the computers, services,
            or other resources connected to the network. This name is known as domain name. For example,                                      TYPES OF NETWORKS
            the domain name in the www.yahoo.co.in URL is yahoo.co.in. This domain name is internally                                 Networks can be classified based on their size, complexity and the geographical area covered by
            converted into IP address.                                                                                                them. Let us understand these categories in detail.


            WEB PAGE                                                                                                                  PERSONAL AREA NETWORK (PAN)
            A single  digital  page  on the  World Wide  Web  (WWW)  that  contains  information  and links of                        PAN refers to the privately owned network. Pan is used to

            another pages is called a web page. Web pages are created by using the Hyper Text Markup                                  establish communication amongst the computers within the
            Language (HTML).                                                                                                          range of 20 to 30 feet. This type of network can be wired or

                                                                                                                                      wireless.
            WEBSITE
            A website is a collection of web pages which are interlinked to each other. A website may contains
            thousands of web pages.                                                                                                                                LOCAL AREA NETWORK (LAN)
                                                                                                                                                      Workstation
                                                                                                                                                                   LAN  is a digital communication system that interconnects a larger
            WEB PORTAL                                                                                                                                    Server   number of computers and other peripheral devices within a radius of

            A website that is specifically designed to provide a single point of access for information is called                                                  less than 1 km. This type of network is useful when you want to connect
            web portal. Web portals are also known simply as portals. The major difference between a website                                                       two different departments in a building (e.g. an office, a building or
            and a web portal is that a portal works as a gateway to WWW and provides several services. On                                                          a factory). The hardware, as well as software resources, are shared
            the other hand, a website may provides only some limited services.                                                                                     through LANs. Your school lab is an example of LAN.


            HYPERTEXT
                                                                                                                                      CAMPUS AREA NETWORK (CAN)
            The text that has a special feature of connecting one web page to another is called a hypertext.
                                                                                                                                      CAN connects two or more LANs that are limited to                             Campus
                                                                                                                                                                                                                    Area
            LINK                                                                                                                      specific geographical areas. For example, college                           Network
                                                                                                                                      campus, office building, etc. A campus area network is
            A link can be defined as a web address that is used to make connectivity between web pages.
                                                                                                                                      larger than LAN since it may span in multiple buildings

            HYPERLINK                                                                                                                 within a specified area.

            A hyperlink is simply a part of the Web page that is linked to a URL. A hyperlink can appear as
            text, an image, or a navigational tool such as a button or an arrow. When you click on a hyperlink,                                                             METROPOLITAN AREA NETWORK (MAN)
            you will jump to the URL specified by the hyperlink. Hyperlinked text usually looks different from                              LAN                LAN          MAN consists of two or more local area networks or campus
            normal text in a Web page. It is often underlined, but can be formatted in a number of ways.                                                                    area networks together that usually spans several buildings

                                                                                                                                                                            in the same city or town. It covers an area ranging from 10
            BANDWIDTH
                                                                                                                                                                            to 100 km. For example, the Internet services provided to
            The capability of a transmission medium to transmit the maximum amount of data from one                                                                         users in a city or the ATM network of any area falls under

            computer to another over a computer network in a given amount of time is called bandwidth.                                                LAN                   MAN.





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