Osi Model Essay

658 words - 3 pages

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, | ...view middle of the document...

|Protocol (UDP), sits at the transport |
| | |layer. |
|Session layer |defines the format of the data sent over |Uses the Remote Procedure Call (RPC) for |
| |the connections |its session protocol. |
|Presentation layer |Converts local representation of data to |The canonical uses a standard byte ordering|
| |its canonical form and vice versa. |and structure packing convention, |
| | |independent of the host. |
|Application layer |Provides network services to the end-users.|Responsible for displaying data and images |
| |Mail, ftp, telnet, DNS, NIS, NFS are |to the user in a human-recognizable format:|
| |examples of network applications. |telnet, ftp, IE |
|Signaling |Process that is used to set up connection | |
| |in the network. This is an electrical | |
| |current that is used to convey data from | |
| |one place to another. | |
|Synchronous |Ensures that data are understood end to |Normally done in the session layer |
| |end, the sequence of events are needed for | |
| |data integrity. When clocking is | |
| |synchronized by an external clock. | |
|Asynchronous |Not synchronized, when data is transmitted | |
| |intermittently rather than in a steady | |
| |stream. When transmission are synchronized| |
| |by the transmission medium. | |
|Bandwidth |Size of data transfer rate, which is the |Modem: 57kbps, ...

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