Web Applications And Security

 Web Applications and Security

Computer Networks 
Computer network is a group of two or more computers systems or peripheral devices that are connected together to exchange information and share resources with each other.












Types Of Networks
  • Personal Area Network (PAN)

  • Local Area Network (LAN)

  • Metropolitan Area Network (MAN)

Wide Area Network (WAN) 

Advantages Disadvantages of Computer Networks

Network Components
  • Switch

  • Repeater

  • Hub

  • Router

  • Bridge

E-Shopping
The process of buying an selling things online is called E-Shoping or Online Shopping. 
Examples of E-Shopping are-

















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