Which IEEE standard corresponds to 10 Gbps Ethernet?

The standard that corresponds to 10 Gbps Ethernet is 802.3an. This standard was introduced to specify the physical layer and medium access control that allows for high-speed data transmission at 10 Gbps over twisted pair cabling, specifically using Category 6a or Category 7 cabling. It broadens the capabilities of Ethernet in a network environment, enabling enhanced performance for data centers, enterprise networks, and carrier-grade applications.

In contrast, the other options represent different speeds and technologies. For instance, 802.3u pertains to Fast Ethernet, which operates at 100 Mbps. The 802.3ab standard focuses on Gigabit Ethernet over twisted pair cabling (1 Gbps), while 802.3i applies to the original 10 Mbps Ethernet. Therefore, 802.3an is specifically designated to address the requirements and technology for 10 Gbps Ethernet, making it the correct answer.