What is frequency hopping in network communication?

Frequency hopping in network communication refers to changing predetermined frequencies simultaneously between the transmitter and receiver. This technique is primarily used in wireless communication systems to improve security and reduce interference. By rapidly switching frequencies during transmission, it becomes more difficult for potential eavesdroppers to intercept the signal, as they would need to know the exact sequence of frequencies the transmitter and receiver are utilizing.

Additionally, frequency hopping can help minimize the impact of interference from other devices using the same frequency band, as the communication can continue seamlessly on different frequencies. This method is commonly implemented in technologies such as Bluetooth and some military communication systems where secure and reliable data transmission is critical.

In contrast, other choices pertain to different principles of communication or technology that do not accurately describe frequency hopping. For instance, the transmission over a single frequency lacks the dynamic nature of frequency hopping. Increasing signal strength is more related to power output and antenna design rather than frequency management. Data encryption involves converting information into a secure format but does not inherently include the mechanism of changing frequencies.