<NetworkiNg> (LLC) The upper portioN of the data liNk layer, as defiNed iNIEEE 802.2. The LLC sublayer preseNts a uNiform iNterface to the user of the data liNk service, usually the Network layer. BeNeath the LLC sublayer is the {Media Access CoNtrol} (MAC) sublayer. (1995-02-14)