Networks - A-Level Computer Science

• Computer networks allow multiple users to access shared resources, such as files, printers, scanners, and other devices, increasing their utility.
• The three main types of network topologies are bus, star and mesh
• Network topology refers to the physical layout of nodes on a computer network.
• A LAN is used within an organization or building, while a WAN connects different organizations over long distances.
• Networks can be classified into two types based on the geographical area they cover: local area network (LAN) and wide area network (WAN).
• The Internet is a global interconnected system of computer networks that allows communication between computers worldwide using standardized protocols.
• A bus network is a single cable that all computers connect to, with data transmitted along the entire length of the cable.
• In a star network, there is one central hub or switch connected by cables to individual computers.
• A bus network is a single cable that all computers connect to, with data being sent down the entire length of the cable.
• In a star network, there is one central hub or switch which all computers connect to via individual cables.
• Mesh networks have many connections between nodes, allowing any node to communicate directly with another without having to go through an intermediary.
• In a LAN, all computers are connected through cables and share data at high speeds.
• LAN stands for Local Area Network, which covers a small geographic area like a single office building.
• WAN stands for Wide Area Network, which spans across large areas like countries or continents.