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11 Cards in this Set
- Front
- Back
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Encoding
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the way data is converted to patterns of electrical, light, or electromagnetic energy and carried on a medium; e.g. electrical pulses (copper), light pulses (fiber-optic), and electromagenetic waves (wireless)
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Local Area Network (LAN)
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a gruop of end devices and users under the control of a common administration
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Wide Area Network (WAN)
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a network used to connect LANs that are located geographically far apart
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protocol suite
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protocols that work together
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network access protocols
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Network access protocols describe two primary functions: (1) data-link management - taking the packets from IP and formatting them to be transmitted over the media, and (2) the physical transmission of data on the media. The standards and protocols for the phusical media govern how the signlas are sent over the media and how they are interpreted by the receiving clients. Transceivers on the NICs implement the appropriate standards for the media that is being used.
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protocol model
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The TCP/IP model is a protocol model because it describes the functions that occur at each layer of protocols within the TCP/IP suite.
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reference model
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The OSI is the most widely known reference model (not specific; provides a common reference)
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Open Systems Interconnection (OSI) Model
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Application
Presentation Session Transport Network Data Link Physical |
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TCP/IP Model
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Application
Transport Internet Network Access |
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OSI vs. TCP/IP model
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The OSI describes the entire communication process in detail, and the TCP/IP model describes the communication process in terms o the TCP/IP protocol suite and the way it functions. The OSI model is used to reference the process of communication, not to regulate it. The TCP/IP model is an open standard that defines the four communication functions that protocols perorm
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Request for Comments (RFC) documents
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Publicly accessible documents that define specifications and policies of the protocols and of the Internet in general; solitications and maintenance of RFCs are the resonsibility of the IETF
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