Which of the following is the radio frequency and data rate for 802.11g as specified by the IEEE standards?

2.0 GHz is not a defined Wi-Fi operating frequency, and 33 Mbps is not a data rate associated with any IEEE 802.11 standard.

The IEEE 802.11g standard operates exclusively in the 2.4 GHz ISM band and uses OFDM (Orthogonal Frequency Division Multiplexing) modulation to achieve a maximum data rate of 54 Mbps. It is backward compatible with 802.11b devices on the same 2.4 GHz band.

While 802.11g does use 2.4 GHz, its maximum data rate is 54 Mbps - not 128 Mbps, which is not a standard 802.11 rate.

5.0 GHz at 54 Mbps describes the 802.11a standard, not 802.11g, which uses 2.4 GHz.