Computer network

A computer network is a group of interconnected computers. Networks may be classified according to a wide variety of characteristics. This article provides a general overview of some types and categories and presents the basic components of a network.

Network Classification

• Scale
  
• Connection method
• Functional relationship (Network Architectures)
• Network topology

Types of networks

• Personal Area Network (PAN)  
• Local Area Network (LAN)
• Campus Area Network (CAN)
• Metropolitan Area Network (MAN)
• Wide Area Network (WAN)
• Global Area Network (GAN)
• Internetwork

      §  Intranet
      §  Extranet
      §  Internet

Basic Hardware Components

• Network Interface Cards
• Repeaters
• Hubs
• Bridges
• Switches
• Routers