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Communications Programming Concepts

DLC FDDI Device Manager Functions

The data link control (DLC) fiber distributed data interface (FDDI) device manager and transport medium use two functional layers, medium access control (MAC) and logical link control (LLC), to maintain reliable link-level attachments, guarantee data integrity, negotiate exchanges of identification, and support both connection and non-connection oriented services.

The FDDI adapter and device handler are responsible for the following MAC functions:

The FDDI Device Manager is responsible for additional MAC functions, such as:

The FDDI Device Manager is also responsible for all LLC functions:


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