Which of the following networks or products utilize spread spectrum technologies?

Wireless local area networks (WLAN), particularly those utilizing Wi-Fi technology, rely on spread spectrum technologies to efficiently transmit data over the air. Spread spectrum methods, such as Frequency Hopping Spread Spectrum (FHSS) or Direct Sequence Spread Spectrum (DSSS), allow for more reliable communication by spreading the signal across a broader frequency range. This enhances resistance to interference, increases security, and makes it difficult for unauthorized users to intercept the data being transmitted.

The adoption of spread spectrum in WLAN is crucial, especially in environments with multiple devices attempting to connect simultaneously, as it helps reduce the likelihood of collisions and enhances overall network performance. This technology is particularly relevant in today’s wireless networks where maintaining strong, reliable connections is essential for various applications and devices.

In contrast, landline telephones primarily utilize conventional circuit-switched technology, while satellite communication systems often employ different modulation techniques that do not necessarily rely on spread spectrum. Analog television broadcasting is designed for transmission of video signals over specific frequencies without the complexities of spread spectrum techniques.