Page 264 - Informatics_Practices_Fliipbook_Class12
P. 264

4.  Differentiate between:
              a.  MAN and WAN               b.  Website and web page
              c.  Router and Gateway        d.  Bus and Star topology
              e.  Static and Dynamic web pages

         Ans.  a.  Refer to 6.4.3 MAN and 6.4.4 WAN
              b.  Refer to 7.1.2 Web page, Website, and URL
              c.  Refer to 6.5.8 Router and 6.5.9 Gateway
              d.  Refer to 6.3.2 Bus Topology and 6.3.4 Star Topology

              e.   Static web pages have fixed content that remains the same for all users, and changes require manual updates to the
                 code. Dynamic web pages, on the other hand, can adapt content in real-time based on user interactions or data input,
                 utilizing server-side processing and often relying on technologies like JavaScript or PHP. Dynamic pages offer more
                 interactivity and personalized experiences compared to static pages.
           5.  Define a network. What is the need of forming a network?
         Ans.   A network is any collection of independent computers that communicate with one another over a shared network medium.
              A computer network enables fast, reliable and easy communication among its users through email, video conferencing or
              chatting through networking.

           6.  Give any two examples of networks.
         Ans.  Two examples of networks are:
              1.  Local Area Network (LAN)
              2.  Metropolitan Area Network (MAN)
           7.  Give any three applications on the Internet.
         Ans.  Three applications on the Internet are:
              1.  Electronic mail

              2.  Chatting
              3.  VOIP
           8.  Name any two mail service providers.
         Ans.  Google (gmail), Microsoft (outlook)
           9.  Explain VoIP.
         Ans.  Refer to 7.1.6 Protocols for Chat and VoIP

          10.  What is DNS?
         Ans.   DNS is a system that translates human-readable domain names into numerical IP addresses, facilitating communication
              between devices on a network.
          11.  Identify the type of topology from the following:
              a.  Each node is connected with the help of a single cable.

              b.  Each node is connected with central switching through independent cables.
         Ans.  a.  Bus
              b.  Star
          12.  Sahil, a Class X student, has just started understanding the basics of Internet and web technologies. He is a bit confused in
              between the terms “World Wide Web” and “Internet”. Help him in understanding both the terms with the help of suitable
              examples of each.
         Ans.   The  Internet  is  a  global  network  that  connects  millions  of  devices  worldwide.  It  is  the  infrastructure  that  enables
              communication between computers. For example, when Sahil sends an email, the information travels through the Internet
              to reach its destination. The World Wide Web (WWW) is a system of interconnected documents and resources accessed
              via the Internet using web browsers. It's like a subset of the Internet focused on content and services. When Sahil visits a
              website, like searching for educational resources, he is using the World Wide Web over the Internet.

          250  Touchpad Informatics Practices-XII
   259   260   261   262   263   264   265   266   267   268   269