Osi Model

University of Phoenix Material

OSI Model Key Terms Table

Define the key terms related to the OSI Model. Describe the functions of any hardware connectivity devices and tools listed.

|Term |Definition |Function |

| | |(if applicable) |

|Physical layer |Transmission media: twisted pair cable, |Defines the cable or physical medium. |

| |Coax, Fiber optic, | |

|Data link layer |Defines the format of the data in the |Handles the physical and logical |

| |network. A network data frame, aka packet,|connections to the packet's destination, |

| |includes checksum, source and destination |using a network interface. |

| |address, and data. | |

|Network layer |Determines the network topology, handle |Manages the connectivity and routing |

| |routing and to prepare data for |between hosts or networks. |

| |transmission | |

|Transport layer |Transport layer subdivides user-buffer into|Two transport protocols, Transmission |

| |network-buffer sized datagrams and enforces|Control Protocol (TCP) and User Datagram |

| |desired...