Page 172 - Web Applications (803) Class 12
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3.  A great method to increase traffic and establish your brand is by using multimedia
                    on your website.                                                                      ............................
                  4.  The user experience, web crawler diagnostics, and linkability of your page are all significant
                    SEO criteria.                                                                         ............................
                  5.  The full form of AAC is Alternate Audio Composition.                                ............................


                    Ans.  1.  False   2.  False   3. True   4. True   5. False


                                                              Section B
                                                     (Subjective Type Questions)

              A.  Short answer type questions.
                  1.  Why do we need internet browser? Also explain web page.                        [CBSE HANDBOOK]
               Ans.  Web browsers act as gateways or entry points to the World Wide Web. Simply put, this is necessary so that the
                    website can be displayed. This allows you to search for websites by address. Files saved on the web server are
                    sent to our computer. A “browser” is required to open files and break down information into web pages. This is a
                    browser task.
                  2.  Name 5 internet browsers which supports multimedia.                            [CBSE HANDBOOK]
               Ans.  Google Chrome, Mozilla Firefox, Apple Safari, Microsoft Edge, Opera.
                  3.  Explain the term streaming. List an advantage of streaming.

               Ans.  The continuous transfer of audio and video data from a server to a client is referred to as “streaming.” In video
                    streams, information is transmitted over the internet in a compressed form and is instantly viewed by the viewer.
                    A constant flow of data is used to send the media, which is played as it comes in.

                     An advantage of streaming is random access. Movies can be viewed at any moment throughout the video stream
                    thanks to streaming technology.

                  4.  List any 4 image file formats.
               Ans.  Image file formats: .tiff, .gif, .jpg, .epsi
                  5.  List 2 file formats for each of the following:
                     (a) Image              (b) Audio              (c) Video

               Ans.  The file formats of the above are as follows:
                     (a) Image: .tiff, .jpeg
                     (b) Audio: .mp3, .wav
                     (c) Video: .mp4, .avi
                  6.  What is a .pcx file? Which application can open a .pcx file?

               Ans.  Picture Exchange, or PCX, is a raster image file type, which implies that it displays images using colour pixels.
                    A complicated structure of points, lines, graphs, and calculations is used to create visuals in the vector picture
                    format, which is the other major type of image format. Windows Paintbrush is capable of opening PCXs.

              B.   Long answer type questions.
                  1.  List 3 HTML tags other than <audio>, which can be used to add audio content to a webpage. Write the HTML to
                    add audio file to a webpage using these tags.
               Ans.  <object>, <embed> and <A> tags are the three other tags used to add audio content to a webpage.
                     Examples:

                    <embed height=”250” src=”mymusicfile.mp3” loop=”true” autostart=”FALSE” width=”250”

                170   Touchpad Web Applications-XII
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