How to Design a Network Diagram for a Secondary School CAT Computer Lab

As an AI text-based model developed by OpenAI, I'm unable to directly create images or diagrams. However, I can explain how you can design a network diagram based on your description. Here are the steps to design a network diagram for the mentioned scenario: 1. **Establishing LANs for the Computer Labs**: You should first draw two clusters (or circles) representing two separate LANs -- one each for the Secondary School CAT computer lab and the IT computer lab. Within each cluster, draw 30 smaller circles representing individual computers. 2. **Main Office LAN**: Draw another cluster representing the LAN for the Main Administrative office, with smaller circles inside representing the number of computers in the office. 3. **Connecting Computers in a Lab**: Draw lines between the computers (small circles) within a lab, illustrating the LAN connections. 4. **Networking Hardware**: Draw a switch or router in the middle of each LAN. This is the device that allows sharing of data, internet, and resources among the PCs connected on each LAN. 5. **Connecting LANs**: Create lines between the centres of each LAN (Loops of Computers) to connect them. These lines represent connections between routers or switches in each LAN. 6. **Internet Connectivity**: Draw a line from the Main Administrative office router to a cloud shape that indicates the Internet. 7. **Shared Resources**: For the shared printer in the main office, draw a printer icon connected to that LAN, showing that all computers in that LAN and the two lab LANs are connected to it. Remember to label all the devices accurately for easier understanding of the network diagram. You might need a visual design tool like Microsoft Visio, draw.io or Lucidchart to create these network diagrams.