100GBASE-ER4 Ethernet Wire Transmission Speed

D.

The correct answer is D. 100 Gb/s.

100GBASE-ER4 Ethernet is a type of Ethernet standard that utilizes single-mode fiber-optic cables to transmit data over long distances.

The "ER" in the name stands for "Extended Reach," indicating that it is designed to operate over longer distances than other types of Ethernet.

The "4" in the name refers to the fact that it uses four wavelengths of light to transmit data. Each wavelength carries 25 Gb/s of data, resulting in a total transmission speed of 100 Gb/s.

It's important to note that the wire transmission speed for 100GBASE-ER4 Ethernet is not the same as the data transfer rate. The wire transmission speed refers to the speed at which the electrical signals are transmitted over the wire, while the data transfer rate refers to the actual amount of data that is transmitted per second.

In the case of 100GBASE-ER4 Ethernet, the wire transmission speed is much higher than the data transfer rate, as multiple bits of data are transmitted simultaneously using different wavelengths of light.