Explanation Interference from other devices can cause wireless connection drops or slow performance. This can happen when devices use the same or overlapping frequency channels as the wireless network, such as cordless phones, microwaves, Bluetooth devices, etc. To avoid interference, it is recommended to use non-overlapping channels and avoid placing wireless access points near potential sources of interference. References: Network+ Study Guide Objective 2.1: Explain the purposes and use cases for advanced network devices. Subobjective: Wireless controllers.