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Hardware Loopback Connections
A loopback is a means of testing
signal transmission. In addition to using the built-in software loopback
in TCP/IP, you can also create a hardware-based loopback connection,
which crosses the computer’s transmit to its receive, receive to
transmit, etc. This is useful to test that a computer’s NIC is
functioning, if other computers on the LAN can talk to each other but
not to that computer, and if you’ve already verified the TCP/IP
installation via ping 127.0.0.1.
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CertiGuide for Network+ (http://www.CertiGuide.com/netplus/) on CertiGuide.com
Version 1.0 - Version Date: November 7, 2004
Adapted with permission from a work created by Tcat Houser and Helen O’Boyle.
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