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When should a crossover UTP cable be used instead of a straight-through cable when connecting network devices?
Correct Answer: A
Acrossover UTP (Unshielded Twisted Pair) cableis used to connect two similar devices directly. This includes: * Switch to switch * Router to router * PC to PC The crossover cable reverses the transmit and receive pairs, allowing for proper communication between like devices without the need for an intermediary device. Conversely, astraight-through cableis used to connect dissimilar devices, such as: * PC to switch * Router to switch * PC to router This cable maintains the same wiring on both ends, suitable for connecting different types of devices. Therefore, when connecting electrically like devices, a crossover cable is appropriate. Reference:Supporting Cisco Devices for FieldTechnicians (FLDTEC) - Cisco Equipment and Related Hardware