The correct answer is: C. IEEE 802.11g
IEEE 802.11g is a wireless networking standard that was ratified in June 2003. It is a high-rate extension of the IEEE 802.11b standard, which was the first widely adopted wireless networking standard. IEEE 802.11g operates in the 2.4 GHz band and supports data rates up to 54 Mbps.
IEEE 802.11b operates in the 2.4 GHz band and supports data rates up to 11 Mbps. It was the first widely adopted wireless networking standard.
IEEE 802.15 is a set of standards for wireless personal area networks (WPANs). It was originally developed by the Institute of Electrical and Electronics Engineers (IEEE) in 1999. The IEEE 802.15 standards are designed for low-power, short-range wireless communication.
IEEE 802.15.4 is a low-rate, low-power wireless networking standard that was ratified in 2003. It is designed for use in applications such as sensor networks and industrial automation.
In conclusion, the correct answer is: C. IEEE 802.11g. IEEE 802.11g is a high-rate extension of the IEEE 802.11b standard, which was the first widely adopted wireless networking standard. IEEE 802.11g operates in the 2.4 GHz band and supports data rates up to 54 Mbps.