Which of the following is used to verify if a NIC port can send and receive data?

The correct answer is A. Loopback plug. A loopback plug (or loopback adapter) is inserted into a NIC port and internally connects the transmit (TX) pins back to the receive (RX) pins. This allows diagnostic software to send data out and immediately receive it back, confirming the port's send/receive functionality. A to

Hardware and network troubleshooting

Question

Options

ALoopback plug
BToner probe
CCable tester
DNetwork tap

How the community answered

(28 responses)

A
89% (25)
B
7% (2)
D
4% (1)

Explanation

A loopback plug (or loopback adapter) is inserted into a NIC port and internally connects the transmit (TX) pins back to the receive (RX) pins. This allows diagnostic software to send data out and immediately receive it back, confirming the port's send/receive functionality. A toner probe traces cables. A cable tester checks cable wiring. A network tap passively monitors traffic without testing the port itself.

Topics

#Loopback plug#NIC testing#Network troubleshooting#Testing tools

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