Understanding Networks and LANs
Think about how you share photos with friends or print documents at school - that's networking in action! A network connects two or more computers so they can share information and resources wirelessly or through cables.
Local Area Networks (LANs) cover small geographical areas like your school or home. Each device connected to the network is called a node, and the organisation owns all the network infrastructure. This setup gives schools complete control over their digital environment.
The benefits are pretty impressive: you can communicate digitally, share files instantly, use shared printers and scanners, and update software from one central location. Plus, organisations can keep their sensitive data secure from outside threats.
However, networks aren't without challenges. Large networks need skilled technicians to install and maintain them, which costs money. Security risks from unauthorised access are constant concerns, requiring strong passwords, software restrictions, encryption, and regular password changes.
Key Insight: Network reliability depends on disaster recovery plans, failover systems, backup equipment, and regular data backups to ensure 24/7 service.
The essential hardware includes nodes, network interface cards (NICs), computers, switches or hubs, and physical cables. Routers connect different networks together - like linking your home network to the internet. Switches direct data flow across networks and work brilliantly with star topology setups.
