TestOut LabSim A+ Certification 2025 – 400 Free Practice Questions to Pass the Exam

The 802.11n standard is the most suitable choice for a wireless network that needs to support a minimum data rate of 150 Mbps, especially considering the interference from the existing 2.4 GHz telephone system.

The 802.11n standard can operate on both 2.4 GHz and 5 GHz bands and offers enhanced speed and range through the use of multiple-input multiple-output (MIMO) technology, which utilizes multiple antennas at both the transmitter and receiver. When configured properly, 802.11n can provide data rates well above 150 Mbps, making it adequate for the client's requirements.

802.11g can offer a maximum theoretical data rate of 54 Mbps, which is insufficient for the requirement of 150 Mbps.

802.11a operates exclusively on the 5 GHz band, which may not be compatible with the 2.4 GHz telephone system and typically provides lower range compared to a 2.4 GHz network.

802.11ac is a more advanced standard that operates solely on the 5 GHz band and supports much higher data rates, but it would not mitigate potential interference from existing 2.4 GHz equipment.

In summary, 802.11n is the best choice in this scenario