Which technology allows devices to communicate over short distances using radio waves?

Which technology allows devices to communicate over short distances using radio waves?

• A. Ethernet
• B. Fiber optics
• C. Wi-Fi
• D. Mesh networks

Answer: (C)

Wi-Fi is the technology that enables devices to communicate over short distances using radio waves. It operates by using specific frequency bands, typically in the 2.4 GHz and 5 GHz ranges, allowing devices such as laptops, smartphones, and tablets to connect to each other and to the internet without needing physical cables. This wireless communication capability is particularly beneficial in environments where mobility and ease of connectivity are essential. Moreover, Wi-Fi technology supports different standards that define how data is transmitted, such as IEEE 802.11a/b/g/n/ac/ax. These standards help determine the speeds and ranges of communication, which can vary based on the specific setup and environmental factors. Ethernet, on the other hand, is a wired communication technology that requires physical connections via cables. Therefore, it does not utilize radio waves for communication. Fiber optics involves the transmission of data as light through glass or plastic fibers and is not associated with radio wave communication, making it unsuitable for short-range wireless connectivity. Mesh networks are a type of topology often used in networking, where multiple devices work together to relay data. While some mesh networks can use Wi-Fi, the term itself describes the organizational structure rather than the communication method. Thus, Wi-Fi stands out as the correct answer

Wi-Fi is the technology that enables devices to communicate over short distances using radio waves. It operates by using specific frequency bands, typically in the 2.4 GHz and 5 GHz ranges, allowing devices such as laptops, smartphones, and tablets to connect to each other and to the internet without needing physical cables. This wireless communication capability is particularly beneficial in environments where mobility and ease of connectivity are essential.

Moreover, Wi-Fi technology supports different standards that define how data is transmitted, such as IEEE 802.11a/b/g/n/ac/ax. These standards help determine the speeds and ranges of communication, which can vary based on the specific setup and environmental factors.

Ethernet, on the other hand, is a wired communication technology that requires physical connections via cables. Therefore, it does not utilize radio waves for communication.

Fiber optics involves the transmission of data as light through glass or plastic fibers and is not associated with radio wave communication, making it unsuitable for short-range wireless connectivity.

Mesh networks are a type of topology often used in networking, where multiple devices work together to relay data. While some mesh networks can use Wi-Fi, the term itself describes the organizational structure rather than the communication method.

Thus, Wi-Fi stands out as the correct answer