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| IEEE standard for error and flow control in data frames. |
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| IEEE standard for Etherenet networking devices and data handling (using the CSMA/CD access method). |
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| IEEE standard for token ring networking devices and data handling. |
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| IEEE standard for wireless networking. |
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| A response generated at the Transport layer of the OSI model that confirms to a sender that its framed was received. |
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Term
ANSI(American National Standards Institute)
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| An organization composed of more than 1000 representatives from industry and gov't who together determine standards for the electronics industry. |
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| API(application programmin interface) |
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Definition
| A set of routines that make up part of a software application. |
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| The seventh layer of the OSI model. Application layer protocols enable software programs to negotiate formatting, procedureal, security, syschronization, and other requirements with the network. |
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Definition
| A method of error checking that dermines fi the contents of an arriving data unit match the contents of the data unit send by the source. |
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| a type of Transport layer protocol that services a request w/o requiring a verfied session and w/o guaranteeing delivery of data. |
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| CRC(cyclic redundancy check) |
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Definition
| an algorithm (or mathmatical routing) used to verify the accuracy of data contained in a data frame. |
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Definition
| The second layer in the OSI model. The Data Link layer bridges the networking media w/the Network layer. Its primary function is to divide the data it receives from the Network layer into frames that can then be transmitted by the Physical layer. |
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Definition
7-application
6-presentation
5-session
4-transport
3-network
2-data Link
1-physical
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Term
| EIA(electronic industries alliance) |
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Definition
| A trade organization compoed of representatives form eletronic manufacturing firms across the U.S that sets standard for eletronic equipment and lobbies for legislation favorable to the growth of the computer and eletronics industries. |
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Definition
| The process of wrapping one layer's PDU with protocol information so that it can be interpreted by a lower layer. |
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Definition
| a networking technology orinally developed at Xerox in the 1970's and improved by Digital Equipment Corporation, Intel, and Exrox. Ethernet, which is the most common form of network transmission technology, follows the IEEE 802.3 standard. |
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Definition
| IEEE standard defining 64-bit physical address. In the EUI-64 scheme, the OUI portion of an address is 24 bits in length. A 40-bit extension identifier makes up the rest of the physical address to total 64- bits. |
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Definition
| a unique set of characters assigned to each NIC by its manufacturer. |
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| FCS(frame check sequence) |
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Definition
| the field in a frame responsible for ensuring that data carried by the frame arrives intact. It uses an algorithm, such as CRC, to accomplish this verification. |
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Definition
| a method of gauging the appropriate rate of data transmission based on how fast the recipient can accept data. |
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Definition
| a Network layer service that subdivides segments it receivs from the Transport layer into smaller pieces. |
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Term
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Definition
| a package for data that includes not only the raw data, or "payload" but also the sender's and recepients' addressing & control information. Frames are generated at the Data Link layer of the OSI model adn are issued to the network at the Physical layer. |
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Term
| IAB(internet architecture board) |
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Definition
| a technical advisory group of researchers and technical professionals repsonsible for Internet growth and management strategy, resolution of technical disputes, and standards oversight. |
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Term
| IANA (internet assigned numbers authority) |
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Definition
| a nonprofit, U.S. gov't funded group that was established at the University of Southern Cal adn charged w/managing IP address allocation & the Domain Name System. IANA continues to perform internet addressin & domain name system administration. |
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| ICANN(internet corporation for assigned name & numbers) |
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Definition
| the nonprofit corporation currently designated by the U.S. gov't to maintain & assign IP addresses. |
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| IEEE(institute of electrical & electronics engineers) |
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Definition
| an internation society composed of engineering professions. Its goals are to promote development & education in the electrical engineering. |
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Term
| HTTP(hypertext transfer protocol) |
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Definition
| an application layer protocol that formulates adn interprest requests between Web clients & servers. |
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Term
| MAC(medial access control) sublayer |
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Definition
| the lower sublayer of the data link layer. the MAC append the physical address of the destination computer onto the frame. |
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Definition
| a professional organization w/members from 90 chapters around the world that helps to establish technical standards for the the internet. |
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| ITU(international telecommunication union) |
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Definition
| a United Nations agencty that regulates international telecommunications adn provides developing courntries w/technical expertise & equipemnt to advance their technologiacal bases. |
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Term
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Definition
| a core protocol int he TCP/IP suite that operates in the Network layer of the OSI model adn provides information about how & where data should be delivered. IP is the subprotocol that enalbes tCP/IP to internetwork |
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Term
| IP address(internet protocol address) |
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Definition
| the network layer address assigned to nodes to uniquely identify them on the tcp/ip network. |
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Term
| OSI (open systems interconnection) model |
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Definition
| a model for understanding & developing computer-to-computer communication developed in the 1980's by ISO. It divides networking functions among seven layers |
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Term
| OUI(organizationally unique identifier) |
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Definition
| a 24-bit character sequence assigned by IEEE that appears at the beginning of a network interface's physical address adn identifies the NIC's manufacturer. |
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Term
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Definition
| a unit of data at any layer of the OSI model. |
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Term
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Definition
the lower level or first layer of the OSI model. Protocols in the physical layer generate and detect signals so as to transmit & recv data over a network medium.
These protocols also set the data transmission rate and moitor data error rates, but do not provide error correction. |
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Term
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Definition
| the fifth layer in the OSI model. The seeion layer establishes and maintains communication between tow nodes on the network. It can be considered the "traffic cop" for communications. |
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Term
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Definition
| a networking technology develped by IBM in the 1980's. It relies upon direct links between nodes and & a ring topology using tokens to allow nodes to transmit data. |
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Definition
the fourth layer of the OSI model. Protocols ensure that data are transferred from point A to point B reliably w/o errors.
Transport layer services include flow control,m acknowledgement, error correction, segmentation, reassembly, & sequencing. |
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