Which Ethernet standard provides Gigabit Ethernet at 1 Gbps over Category 5e or Category 6 cable with a 100-meter maximum distance?

Which Ethernet standard provides Gigabit Ethernet at 1 Gbps over Category 5e or Category 6 cable with a 100-meter maximum distance?

• A. 10BASE-T
• B. 100BASE-TX
• C. 1000BASE-SX
• D. 1000BASE-T

Answer: (D)

Gigabit Ethernet over copper achieves 1 Gbps by using all four pairs of twisted-pair cable and running at speeds that saturate the link up to a 100-meter distance. The standard designed for this is 1000BASE-T, which over Cat5e or Cat6 uses full-duplex operation and advanced signaling to transfer data at 1 Gbps across each active pair, totaling 1 Gbps across the four pairs. This is why it fits the requirement of 1 Gbps over Category 5e or 6 cables up to 100 meters. The other options don’t fit because one is only 10 Mbps, another is 100 Mbps over copper, and the last uses fiber (1000BASE-SX) rather than copper cabling.

Gigabit Ethernet over copper achieves 1 Gbps by using all four pairs of twisted-pair cable and running at speeds that saturate the link up to a 100-meter distance. The standard designed for this is 1000BASE-T, which over Cat5e or Cat6 uses full-duplex operation and advanced signaling to transfer data at 1 Gbps across each active pair, totaling 1 Gbps across the four pairs. This is why it fits the requirement of 1 Gbps over Category 5e or 6 cables up to 100 meters. The other options don’t fit because one is only 10 Mbps, another is 100 Mbps over copper, and the last uses fiber (1000BASE-SX) rather than copper cabling.