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Lesson 12

Operational Protocols that govern the Internet Conclusion

This module discussed the operational protocols that govern the Internet. You learned which protocols are currently in use and how they function. You should now be able to:
  1. Describe the nature and purpose of protocols
  2. Describe TCP/IP addresses and their classifications
  3. Explain the purpose of masks and subnetting
  4. Evaluate the protocols used for email
  5. Evaluate the protocols used on the Web
  6. Describe the Domain Name Service (DNS) and Internet domain names
  7. Describe the functions, components, and types of URLs


In this module, you were introduced to the following terms:
  1. Protocol: A protocol is a set of logical rules that define how computers send and receive information.
  2. User Datagram Protocol (UDP): UDP is a procotol that sends data from one program to another using Internet Protocol (IP). UDP is less reliable than TCP because it provides unverified transportation for individual messages.
  3. Subnetting: Subnetting is used when a company has more computers than can be connected to its network; it is also used as a traffic reduction mechanism.
  4. Point-to-Point Tunneling Protocol (PPTP): Point-to-Point Tunneling Protocol (PPTP), now commonly referred to as VPN (Virtual Private Networking) is Microsoft's version of PPP that encapsulates packets from other protocols for transmission over an IP network.
  5. Point-to-Point Protocol (PPP): Point-to-Point protocol provides dial-up access over serial lines.
  6. Gopher: The gopher protocol is a utility that searches the Internet for data and news and presents the results in a hierarchy-based document-retrieval system.
  7. Network News Transfer Protocol (NTTP): NTTP allows your emails to discussion groups to be routed and received.
  8. Telnet: Telnet is a "terminal emulator for the Internet
  9. File Transfer Protocol (FTP) : FTP is the primary protocol used to transfer files and resources on the Internet.
  10. Uniform Resource Locator (URL): URL specifies a unique address to a resource on the Internet. A resource can be a specific Web page, a document, or an image. URLs are occasionally called URIs, or Uniform Resource Identifiers.
  11. Port number: Identifies the hardware and software ports on a computer.
In the next module, you will learn about tools to help you surf the Web with success.

Domain Process - Exercise

Click the Exercise link below to test your knowledge of how a domain name travels from a node to its Web site.
Domain Process - Exercise