Final answer:
Co-channel interference in a wireless local area network (LAN) is caused by signal strength and network topology.
Step-by-step explanation:
Co-channel interference in a wireless local area network (LAN) is caused by signal strength and network topology.
Signal strength plays a role in co-channel interference because when multiple devices transmit signals at similar power levels on the same channel, the signals can interfere with each other. This interference leads to reduced signal quality and data transmission errors.
Network topology also contributes to co-channel interference. When multiple devices are in close proximity and using the same channel, the signals can overlap and interfere with each other, resulting in degraded network performance.