A cafe owner has installed a single wireless access point for customer internet access. Patrons seated at the back of the cafe report a very weak Wi-Fi signal even when only a few people are online. Which of the following is most likely causing radio-frequency interference or attenuation in that part of the building?
The router's DHCP lease time is set to 4 hours
Thick brick or concrete walls between the access point and those tables
Customers streaming high-definition video on multiple devices
Concrete or brick walls between an access point and client devices absorb and reflect RF energy, significantly reducing signal strength. By contrast, heavy streaming by customers merely consumes bandwidth (congestion), WPA3 encryption adds only slight processing overhead, and changing DHCP lease time affects address management-none of these settings weaken or block the RF signal itself.
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