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Key Terms

Review the following list of key terms:

  • ethernet—A very popular LAN architecture, using the CSMA/CD network-access method.

  • token ring—A LAN architecture featuring a ring topology and a token-passing network access method.

  • Data Link layer—The second layer of the OSI model.

  • Media Access Control sublayer—A sublayer of OSI's Data Link layer that is responsible for the interface with the network adapter.

  • Logical Link Control sublayer—A sublayer of OSI's Data Link layer that is responsible for error checking and managing links between devices on the subnet.

  • Physical layer—The first OSI layer, responsible for translating the data frame into a bitstream suitable for the transmission medium.

  • network architecture—A complete specification for a physical network, including specifications for access method, data frame, and network cabling.

  • access method—A procedure for regulating access to the transmission medium.

  • data frame—A package of data transmitted over an ethernet network.

  • physical address—A permanent network address, burned into the adapter card by the manufacturer, that is used to deliver data across the physical network.

  • preamble—A series of bits marking the beginning of a data frame transmission.

  • CRC (Cyclical Redundancy Check)—A checksum calculation used to verify the contents of a data frame.

  • CSMA/CD—The network access method used by ethernet.

  • token passing—The network access method used by token ring.

  • FDDI—A token passing network architecture using fiber-optic cable.

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