Which common home WLAN frequency band is widely used for wireless networking?

Which common home WLAN frequency band is widely used for wireless networking?

• A. 2.4 GHz
• B. 10 GHz
• C. 60 GHz
• D. 500 MHz

Answer: (A)

The main idea here is understanding which frequency band is commonly used for home Wi‑Fi and why one band dominates in everyday setups. The 2.4 GHz band is widely used for home wireless networks because it sits in the unlicensed ISM spectrum, so devices can operate there without special licenses in most countries. Radios for this band are inexpensive and widely available, which means many routers, laptops, phones, and smart devices support it. The lower frequency also travels farther and penetrates walls better than higher bands, giving more reliable coverage throughout a typical home. This band has broad compatibility across older and newer Wi‑Fi standards, making it the de facto choice for many households. The other options don’t fit as the standard home WLAN band. Higher-frequency bands like 10 GHz and 60 GHz offer very high data rates but have limited range and require clearer line-of-sight, making them impractical for general home use. The 500 MHz option isn’t a standard home Wi‑Fi band either. So, 2.4 GHz best explains why this band is the default for most home wireless networks.

The main idea here is understanding which frequency band is commonly used for home Wi‑Fi and why one band dominates in everyday setups. The 2.4 GHz band is widely used for home wireless networks because it sits in the unlicensed ISM spectrum, so devices can operate there without special licenses in most countries. Radios for this band are inexpensive and widely available, which means many routers, laptops, phones, and smart devices support it. The lower frequency also travels farther and penetrates walls better than higher bands, giving more reliable coverage throughout a typical home. This band has broad compatibility across older and newer Wi‑Fi standards, making it the de facto choice for many households.

The other options don’t fit as the standard home WLAN band. Higher-frequency bands like 10 GHz and 60 GHz offer very high data rates but have limited range and require clearer line-of-sight, making them impractical for general home use. The 500 MHz option isn’t a standard home Wi‑Fi band either. So, 2.4 GHz best explains why this band is the default for most home wireless networks.