Definitions for "Loopback Test"
A circuit test at any device which will tie the transmit data to the receive data in order to apply a signal and receive the data back for interpretation. Usually done at a customer device such as a CSU or a network device such as DS-O or DS-1 DACS port.
Test in which signals are sent and then directed back toward their source from some point along the communications path. Loopback tests are often used to test network interface usability.
a software or hardware test that alters the flow of data so that an electronic signal is returned to its sender
Keywords:  lossless
Keywords:  whuch, port, good, way, determine
a good way to determine which port is whuch
a connection from the database server back to itself
A connection from the server back to itself. Performing a successful loopback verifies that Oracle Net is functioning on the database server.