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Describe the type of services provided by data link layer to the network layer. list three MAC sub layer protocols?
Wiki User
∙ 13y ago
Data Link layer:
Data link layer has several functions to perform they are providing a well defined service to the network layer, determining how the bits of the physical layer are grouped into frames, dealing with transmission errors, regulating the flow of frames so that slow receivers are not swamped by fast senders, and general link management.
Services provided to the network layer:
The principal service provided by the data link layer to the network layer is the transmission of data from the source network layer to destination network layer. This can be accompolished in 3 ways:
1. Un acknowledged connectionless service.
2. Acknowledged connectionless service.
3. Connection oriented service.
Unacknowledged connectionless service consists of having the source machine send independent frames to the destination machine without having the destination machine acknowledge them. This is used where the re is a very low chance of transmission errors.
In Acknowledged connectionless service the source machine send the frames indepenedently to the destination machine, but with acknowlegement to each and every frame from the destination machine.
In connectin oriented service a connection is established between the source and the destination until all the data is transfered.
Wiki User
∙ 13y ago
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network services
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