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TCP and IP are protocols governing the handling and the formatting of data in an electronic communications system; they are the main proto cols used on the Internet. The messages (files) exchanged over the network are divided into small units (called packets) by TCP, while IP takes care of managing the actual delivery of the data. The routing needed to accomplish this is completely transparent to the user. All is needed in order to access another system is an ‘Internet address’ (called IP address), a 32 bit number, normally written as four decimal numbers. A specific service, called Domain Name Service (DNS), provides a database containing the correspondence between numeric addresses and alphabetic domain names. TCP/IP uses the client/server model of communication in which a computer user (a client) requests and is provided a service by another computer (a server). This is the case, for example, in which a consumer is asking to view a hotel website. TCP/IP protocols support services such as remote login to a computer, file transfer (FTP), electronic mail, and the World Wide Web. In the hospitality industry, besides these applications, many internal networks are using TCP/IP protocols to connect not only computers, but also other electronic equipment.


Loshin, P. (2003). TCP/IP Clearly Explained (4th ed.). San Francisco, (CA): Morgan Kaufmann.

Tanenbaum, A. S. (2003). Computer Networks (4th ed.). Upper Saddle River, (NJ): Prentice Hall.


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