TestOut LabSim A+ Certification Practice Exam

Which wireless standard can operate at speeds of up to 54 Mbps within a maximum radius of 150 feet?

1. 802.11g

2. 802.11b

3. 802.11a

4. 802.11n

The correct answer is: 802.11a

The wireless standard that can operate at speeds of up to 54 Mbps within a maximum radius of 150 feet is 802.11g. This standard was designed to be backwards compatible with 802.11b and provides significantly higher throughput compared to its predecessor, 802.11b, which operates at a maximum speed of 11 Mbps. While 802.11a also has a maximum throughput of 54 Mbps, it operates on the 5 GHz frequency band, which typically has a shorter range and can struggle with obstacles compared to 802.11g's 2.4 GHz band. This makes 802.11g more suitable for achieving usable speeds at a distance of 150 feet in many environments. 802.11n, while offering even higher speeds and improved ranges through MIMO (multiple input, multiple output) technology, is not limited to 54 Mbps and is capable of much higher speeds under optimal conditions. Therefore, it does not fit the criteria specified in the question. In summary, the accurate answer aligns with the capabilities of 802.11g, which provides a maximum speed of 54 Mbps and operates effectively within a range of about 150 feet.