What data rate does Cat 5/5e support using 4 pairs?

Cat 5e, or Category 5 enhanced cable, supports data rates of up to 1 Gbps (1000 Mbps) when using all four pairs of wires within the cable. This capability allows it to handle higher bandwidth applications and is suitable for networking environments that require fast data transmission, such as in Ethernet networks.

The standard established for Cat 5e guarantees that it can maintain performance levels sufficient for Gigabit Ethernet (1000Base-T), which utilizes all four pairs of twisted wires to transmit and receive data simultaneously. This is why the choice indicating a rate of 1000 Mbps is accurate.

It's also noteworthy that while Cat 5 can support data rates of up to 100 Mbps, it does not reach the higher levels of performance provided by Cat 5e when fully utilized. The references to 100 Mbps and 300 Mbps relate to earlier standards and are insufficient for modern high-speed network requirements. Therefore, Cat 5e is the correct option, as it directly supports Gigabit Ethernet.