What Fast Ethernet standard can send Ethernet frames at 100 Mbps?

The Fast Ethernet standard that is capable of transmitting Ethernet frames at 100 Mbps is IEEE 802.3u. This standard was specifically developed to provide speeds that are ten times faster than traditional 10 Mbps Ethernet (IEEE 802.3). It includes support for both half-duplex and full-duplex operations, allowing flexibility in network design and improving overall network performance.

Furthermore, it's important to recognize that IEEE 802.3ab pertains to Gigabit Ethernet over twisted pair cabling and operates at 1000 Mbps, while IEEE 802.3z relates to Gigabit Ethernet over fiber optics, also operating at 1000 Mbps. IEEE 802.11, on the other hand, is a set of standards for wireless networking and does not describe a Fast Ethernet protocol. Therefore, the focus on 100 Mbps transmission in the context of Fast Ethernet aligns precisely with IEEE 802.3u.