Which term provides wireless local area networking using radio signals?

• A. Cloud
• B. Wi-Fi
• C. Ethernet Switch
• D. ISP

Answer: (B)

Wi‑Fi is the technology that enables wireless local area networking using radio signals. It lets devices like laptops, phones, and smart devices connect to a home or office network without cables by communicating with a wireless router or access point over radio bands (commonly 2.4 GHz and 5 GHz). Networks follow standards such as IEEE 802.11, which define how data is transmitted, how devices discover networks, and how security is handled (WPA2/WPA3). This setup makes sharing resources and accessing the Internet possible within a limited area without wired connections. The other terms refer to different concepts: Cloud means remote services and storage accessed over the Internet; an Ethernet switch connects devices using wired cables; an ISP provides Internet service, not the wireless LAN technology itself.