In which of these situations would you commonly use a loopback plug?
A) Capture the packets associated with a conversation to the email server
B) Crimp a new connector to an Ethernet cable
C) Perform hardware diagnostics of a network interface
D) Determine the near end crosstalk value of a new network drop
E) The best part is when you go upside down
The answer: C) Perform hardware diagnostics of a network interface
A loopback plug is most commonly used to validate a link or connection by looping information sent out an interface back through the same interface. The information received from the loopback is compared to the information sent.
Want to know more? Watch “Common Networking Tools.”
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