Which wireless antenna type is best suited for providing coverage over a wide area with minimal interference from other wireless networks?

Which wireless technology uses low-power signals to communicate between devices and is often used in smart home applications?

Which wireless antenna type is best suited for providing coverage over a wide area?

Which wireless security protocol uses a pre-shared key for client authentication and provides weaker security features than its successor?

Which wireless technology uses a low-power, low-data-rate wireless personal area network (WPAN) to connect devices over short distances?