Page 24 - KEC Khaitan C8.2 Flipbook
P. 24
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.
21 st #Communication
LAB ACTIVITY Century #Technology Literacy
Skills
A. Identify the type of network:
(i) (ii)
LAN LAN
LAN
________________________ ________________________
Workstation
(iii) Server (iv) Network
Campus
Area
________________________ ________________________
B. 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.
FOR THE TEACHER
1. Discuss about Campus Area Network.
2. Explain the advantages and disadvantages of various topologies.
3. 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

