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    Workstation

                                 (iii)                        Server         (iv)             Network

                                                                                                 Campus
                                                                                                Area

                                   ________________________                        ________________________

                          2.   Visit your computer lab and explore the Internet to identify and gather information about various
                             types of networks.  Create a presentation based on the information you collected.

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                                      {C ding z ne}
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                                                                                                    #Technology Literacy
                                                                                              Century
                                                                                                Skills
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                           1.  Convert the following plain text into cipher text using the Caesar Cipher technique:
                               i love coding
                               Caesar Cipher: Shift each letter by three places ahead.

                           2.  Convert the following cipher text back into plain text using the Caesar Cipher technique.

                               Caesar Cipher: Shift each letter three places back:

                               vhhbrxrqprqgdb

                           3.   Convert the following plain text into cypher text using the Rail Fence cipher according to the
                               encryption key that is given.
                               Rail Fence Cipher:

                               (a) Attack from the west, encryption key=3

                               (b) Be honest, encryption key = 2

                               Hint: The  Rail Fence Cipher  is a classical  transposition  technique  where  the plain text  is
                               written diagonally in a zig-zag pattern across multiple rails. When the bottom rail is reached, the
                               writing direction switches upwards diagonally and it changes again upon reaching the top,
                               creating a zig-zag effect.

                         FOR THE TEACHER

                        1.  Explain the advantages and disadvantages of various topologies.
                        2.   Demonstration of the working of a computer network would be helpful. Take the students to the Computer Lab to
                           be shown how resource and file sharing is executed.

                       22   Premium Edition-VIII

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