Computer Hacking Forensic Investigator (CHFI) Practice Exam

The correct answer is associated with the 802.11a wireless standard, which is notable for its capability of providing data transmission speeds of up to 54 Mbps. This standard operates within the 5 GHz frequency spectrum, which allows for higher data rates compared to some other wireless standards. The use of the 5 GHz band is particularly advantageous because it typically experiences less interference from other devices, as it is less crowded than the commonly used 2.4 GHz spectrum.

Additionally, 802.11a employs Orthogonal Frequency Division Multiplexing (OFDM) technology, which enhances performance and allows for efficient data transmission over the air. This technology is crucial for supporting high bandwidth applications.

In contrast to 802.11b and 802.11g, which operate in the 2.4 GHz band and have lower maximum data rates (11 Mbps and 54 Mbps, respectively, for 802.11g, but not natively at 5 GHz), 802.11a's design is specifically tailored for environments where speed and minimal interference are essential requirements. The 802.11i option relates to security enhancements in wireless networks, and it does not pertain specifically to bandwidth or frequency spectrum.