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loopback test Last modified: Monday, July 16, 2001
A diagnostic procedure in which a signal is transmitted and returned to the sending device after passing through all or a portion of a network or circuit. The returned signal is compared with the transmitted signal in order to evaluate the integrity of the equipment or transmission path. A computer needs a loopback plug that is inserted into a port in order to perform a loopback test.
	Related Categories Error Correction File Transfer Network Management Procedures, Functions and Routines Related Terms loopback address loopback plug port troubleshoot