mt1

• Computer Networks


  A group of two or more computers linked together
• Basic Network Components


  • Server
  • Client
  • Media
  • Network Adopter
  • Resources
  • User
  • Protocols
• Local Area Network (LAN)


  Connects network devices over a relatively short distance
• Wide Area Network (WAN)


  Provides long distance transmission of data, voice, image, and video information over large geographical areas
• Peer to Peer (P2P) network architecture


  Each party has the same capabilities and any party can initiate communication
• Client-Server network architecture


  Computers are classified as either servers or clients
• Types of Computer Network Topology

  • Point to Point
  • Mesh
  • Star
  • Bus
  • Ring
  • Tree
  • Hybrid
• Network Bandwidth


  The amount of data that can be transmitted between 2 points in the network in a set period of time, commonly expressed in bits per second
• Internet


  A global system of interconnected computer networks that use the standard internet protocol suite (TCP/IP) to serve several billion users worldwide
• Basic Applications of the Internet

  • Communication
  • Job Searches
  • Finding books and study material
  • Health and medicine
  • Travel
  • Entertainment
  • Shopping
  • Stock market updates
  • Research
• TCP/IP Applications


  The highest-level protocols within the TCP/IP protocol stack that communicate with applications on other internet hosts and are the user-visible interface to the TCP/IP protocol suite
• Components to getting connected to the Internet

  • Computer
  • Modem (dial-up, DSL, cable)
  • Internet Service Provider (ISP)
  • Software (Web Browser/Internet Browser)