Final answer:
The IEEE 802.11a standard operates on a 5 GHz frequency band and has a maximum bandwidth of 54 Mbps, corresponding to answer C) 5 GHz / 54 Mbps.
Step-by-step explanation:
The IEEE 802.11a wireless standard operates on the frequency band and maximum bandwidth parameters of 5 GHz and 54 Mbps, respectively. This means that the correct answer to the question regarding which frequency band and maximum bandwidth the IEEE 802.11a standard has is C) 5 GHz / 54 Mbps.
IEEE 802.11a is one of the many standards within the IEEE 802.11 family, which defines the specifications for wireless local area networking (WLAN), commonly known as Wi-Fi. This particular standard was one of the first to use a higher frequency band compared to the more common 2.4 GHz band used by the IEEE 802.11b and 802.11g standards. Using the 5 GHz band allows 802.11a to have less interference, as this band is less crowded. However, the higher frequency also means the signal has a shorter range and is less capable of penetrating solid objects like walls.