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A data link control is a service that ensures reliable network data communication by managing frame error detection and flow control. DLC is based on the Data Link layer of the OSI model.
DLC handles the following tasks:
DLC character codes are based on standard character codes, such as the American Standard Code for Information Interchange (ASCII). Extended Binary Coded Decimal Interchange Code (EBCDIC) is comprised of hidden characters.
DLC device contexts are as follows: