The following ports are considered as legacy except __ Select one: a. USB b. PS/2 ports c. Serial ports d. Parallel ports

The correct answer is a. USB.<br /><br />USB (Universal Serial Bus) is not considered a legacy port. It is a widely used and still prevalent port standard for connecting various devices to computers and other electronic devices. USB ports are commonly found on computers, smartphones, tablets, and many other devices.<br /><br />On the other hand, PS/2 ports, serial ports, and parallel ports are considered legacy ports. These ports were commonly used in older computer systems but have largely been replaced by USB ports in modern systems. PS/2 ports were used for connecting keyboards and mice, serial ports were used for connecting modems and other serial devices, and parallel ports were used for connecting printers and other peripheral devices.