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Intro to Networks
Intro to Networks
Intro to Networks
Intro to Networks
Intro to Networks
Intro to Networks
Intro to Networks
Intro to Networks
Intro to Networks
Intro to Networks
Intro to Networks
Intro to Networks
Intro to Networks
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Intro to Networks

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Transcript

  • 1. Intro to Networks
  • 2. Simple Network In a simple network, two computers (or other networkable devices) make a direct connection with each other and communicate over a wire or cable.
  • 3. Local Area Network (LAN) Local area networks often feature a group of computers located in a home, school, or part of an office building. Here the switch controls traffic to the local server and the firewall protects the LAN from potential threats from the Internet.
  • 4. Larger Wired Networks Ethernet cables connect computers in a LAN, which then connect out to the Internet Service Provider (ISP) via phone or cable TV lines, which in turn connects to the Internet Backbone made up of fiber optic cable.
  • 5. Network Cables Ethernet Cable Fiber Optic Cable Core - Thin glass center of the fiber where the light travels Cladding - Outer optical material surrounding the core that reflects the light back into the core Category 5 cable includes four twisted pairs Buffer coating - Plastic coating that protects the fiber in a single cable jacket. from damage and moisture This use of balanced lines helps preserve a high signal-to-noise ratio.
  • 6. Internet Backbone Each line is drawn between two nodes, representing two IP addresses. This is a small look at the backbone of the Internet.
  • 7. ISP ISP User User Internet LAN LAN User User User User User User
  • 8. How Does Information Travel in a Network? Packets All information is broken down into binary bytes which travel along communication lines as packets. Protocol Information is exchanged across networks through protocols, which is a shared networking language that determines connection and transfer of packets.
  • 9. Wireless Network A wireless access point translates and transmits information as radio waves. Any device with a wireless receiver can join the wireless network once it is given an IP address.
  • 10. What are some other kinds of Networks?
  • 11. Cell Phone Network Cell Phone Tower
  • 12. Social Network
  • 13. Neural Network

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