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Chapter 3 Key Terms

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CHAPTER 3 KEY TERMS

TCP/IP. Transmission Control Protocol/Internet Protocol: a communications protocol for computer networks, the main protocol for the Internet. TCP/IP. Short for Transmission Control Protocol/Internet Protocol.

Networking Standard. An interconnected group or system.
TCP/IP. The only difference in these bottom four layers is the name of OSI Layer 3 (network) compared to TCP/IP (Internet). The upper three layers of the OSI reference model (application, presentation, and session—Layers 7, 6, and 5
Open network is called a network where network operator and service provider are separated.
In open network relationship between an end-user and a service provider depends on mutual agreement.
The Open Systems Interconnection model (OSI) is a conceptual model that characterizes and standardizes the internal functions of a communication system by partitioning it into abstraction layers.
Encoding convert (information or an instruction) into a particular form.
In many disciplines of computer science, a header is a unit of information that precedes a data object. In a network transmission, a header is part of the data packet and contains transparent information about the file or the transmission.
Typically, leased lines are used by businesses to connect geographically distant offices. Unlike dial-up connections, a leased line is always active. The fee for the connection is a fixed monthly rate. The primary factors affecting the monthly fee are distance between end points and the speed of the circuit.
The Internet Protocol (IP) is the method or protocol by which data is sent from one computer to another on the Internet. Each computer (known as a host) on the Internet has at least one IP address that uniquely identifies it from all other computers on the Internet.
IP address a unique string of numbers separated by periods that identifies each

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