It 240 Osi Model Key Terms Table, Appendix C Qc

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Associate Level Material

Appendix C

OSI Model Key Terms Table

Use the following table to 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 |The 1st layer of the OSI model is also its |The Physical layer changes packets of data |

| |bottom layer. This layer transmits and |to phsyical signals as 1's and 0's, and |

| |receives signals and specifies the physical|later, sends these signals to their |

| |details of cables, NICs, connectors, and |destination. |

| |hardware behavior. | |

|Data link layer |The 2nd layer of the OSI model. This layer |The data received from the network layer is|

| |is responsible for managing access to the |split into frames that can be transmitted |

| |network medium and delivery of data frames |by the physical layer. |

| |from sender to receiver or from sender to | |

| |an intermediate device, such as a router. | |

|Network layer |The 3rd layer of the OSI model. This layer |Network links are created, saved, and |

|...