The correct answer is False.
WLANs use low power levels and do not generally require a license for spectrum use. This is because WLANs are typically used in small, confined areas, such as homes or offices, where there is little risk of interference with other wireless devices. Additionally, WLANs use unlicensed spectrum, which is available for free to anyone who wants to use it.
However, there are some exceptions to this rule. For example, some WLANs, such as those used by businesses or universities, may use higher power levels and require a license for spectrum use. This is because these WLANs are typically used in larger areas, where there is a greater risk of interference with other wireless devices. Additionally, these WLANs may use licensed spectrum, which is spectrum that is reserved for specific uses and requires a license from the government.
In general, WLANs use low power levels and do not require a license for spectrum use. However, there are some exceptions to this rule.