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The Technical Components of an E-Commerce System
Why a Communication Options Chapter?
This chapter will look at the development of communications from three different perspectives, namely non-Internet options, messaging options and the Internet itself which, in a broad sense, relies on a combination of options from the other two categories.
Non-Internet Options
Networks are electronic/data highways, which link computers together for the purpose of sharing resources. They are characterised by:
the type of data transmission technology they use;
whether they carry voice, data, or voice and data;
whether they are public or private (i.e. who can use them);
the nature of connection – dial-up, dedicated or virtual connections;
the types of physical links (such as optical fibre, coaxial cable, and copper wire).
The type of data transmission refers to the protocol they use, i.e. the set of rules for communicating that the end points in a connection use when they exchange signals. Both endpoints must understand and observe the protocol. The Internet uses TCP/IP protocols, which includes TCP Transmission Control Protocol) and IP (Internet Protocol), HTTP, FTP and other protocols, each with a defined set of capabilities.
E.g.: LAN, MAN, WAN.
Wired & Wireless connections: Telephone, ISDN, DSL, and Satellite
Virtual Private Network
A VPN is a private data network that makes use of the public telecommunications infrastructure. The term virtual is used here because the network is not truly privately owned and operated; it relies for its wide area connections on the service provider’s lines and equipment.
Why a Communication Options Chapter?
This chapter will look at the development of communications from three different perspectives, namely non-Internet options, messaging options and the Internet itself which, in a broad sense, relies on a combination of options from the other two categories.
Non-Internet Options
Networks are electronic/data highways, which link computers together for the purpose of sharing resources. They are characterised by:
the type of data transmission technology they use;
whether they carry voice, data, or voice and data;
whether they are public or private (i.e. who can use them);
the nature of connection – dial-up, dedicated or virtual connections;
the types of physical links (such as optical fibre, coaxial cable, and copper wire).
The type of data transmission refers to the protocol they use, i.e. the set of rules for communicating that the end points in a connection use when they exchange signals. Both endpoints must understand and observe the protocol. The Internet uses TCP/IP protocols, which includes TCP Transmission Control Protocol) and IP (Internet Protocol), HTTP, FTP and other protocols, each with a defined set of capabilities.
E.g.: LAN, MAN, WAN.
Wired & Wireless connections: Telephone, ISDN, DSL, and Satellite
Virtual Private Network
A VPN is a private data network that makes use of the public telecommunications infrastructure. The term virtual is used here because the network is not truly privately owned and operated; it relies for its wide area connections on the service provider’s lines and equipment.
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