Which wiring configuration is necessary for proper operation between two devices connected with UTP?

The correct answer is that the wiring must be identical at both ends. In a Unshielded Twisted Pair (UTP) configuration, each pair of wires is twisted together to help reduce electromagnetic interference. For devices to communicate effectively over UTP, the pinouts — the specific connections used on either end of the cable — must match precisely. This ensures that each signal sent from device A, for example, is correctly received by device B on the corresponding pin.

When the wiring is identical at both ends, it guarantees that the transmit and receive signals are appropriately aligned, allowing for seamless data transmission. Mismatched wiring or alterations at one end can lead to communication failures or degraded performance, as the devices would not be able to establish a proper connection. Therefore, maintaining identical wiring at both ends is essential for consistent and reliable operation between the devices.