Final answer:
The 802.11b/g/n standard is known to cause congestion on the 2.4 GHz band due to overcrowding. This can result in slower speeds and increased transmission time for data.
Step-by-step explanation:
The 802.11b/g/n standard operates on the 2.4 GHz band and is known to cause more congestion when compared to the 802.11a/ac standard which operates on the 5 GHz band. The 2.4 GHz band is overcrowded due to the prevalence of devices using this frequency, such as microwaves, Bluetooth devices, and other WiFi networks. This can result in slower speeds and increased transmission time for data on the 2.4 GHz band.