Lesson 1

  1. Backbone – The Travel Long Distance.
  2. Checksum- A number that allows the receiving end of the packet to determine if any errors occurred in the transmission of the data.
  3. Computer Network – When two or more computers are connected in a way that allows them to communicate with each other.
  4. Domain Name System - Groups the many computers on the internet into domains.
  5. Header – Is attached to the IP packet.
  6. Internet – Is a collection of computer networks that communicate with each other using a common set rules
  7. Internet Corporation for Assigned Names and Numbers – Is a nonprofit corporation that coordinates the assignment of Internet addresses and domain names.
  8. Internet Protocol – Defines how data is routed over the internet
  9. Internet Society – Is a nonprofit group that is the central organization for the groups that are responsible for the standards for Internet infrastructure
  10. IP address- four numbers separated by periods.
  11. IP packet- a typical packet created by TCP.
  12. Local Area Network – when TCP has an IP packet ready to travel.
  13. Name server- when a user enters an address in an e-mail address or web browser, these computers look up at the IP address of the domain and transparently direct the e-mail or Web browser to appropriate IP address.
  14. Network – when two or more computers are connected together in a way that allows them to communicate with each other.
  15. Packet – small pieces sent through the network.
  16. Packet – switched network – the type of network the internet is.
  17. Protocol – common set of rules
  18. Router – devices that examine the packets and decide the path that each packet should travel.
  19. Transmission Control Protocol – defines how data is broken down into packets at the sending end and reassembled at the receiving end.
  20. World Wide Web – a set of protocols that run o top of the internet.
  21. Consortium –is the organization that develops standards for the World Wide Web.