Why should an access point not always utilize all the power it has for broadcasting wireless signals?

What will be an ideal response?

ANSWER: Each access point's power level, or the strength of the signal the access point emits, should be optimized for the geographic area covered by that AP. Power levels that are too low will result in dropped signals as clients roam to the peripheral areas of the AP's range. However, maxed out power levels will result in too much overlap between AP coverage areas, causing clients from other coverage areas to attempt to connect with APs that are farther away but transmitting the stronger signal.