Which standard is known as Wi-Fi 5?

Which standard is known as Wi-Fi 5?

• A. 802.11ax
• B. 802.11g
• C. 802.11ac
• D. 802.11n

Answer: (C)

Wi-Fi 5 refers to the 802.11ac standard. This generation was designed as the successor to 802.11n (Wi-Fi 4) and is marketed by the Wi‑Fi Alliance as Wi‑Fi 5. It primarily uses the 5 GHz band, which offers more available spectrum and typically less interference than 2.4 GHz. It also leverages wider channel bandwidth (80 or 160 MHz) and more advanced modulation (up to 256-QAM), with improvements like MU‑MIMO in later implementations to boost throughput and capacity. These enhancements collectively push real-world speeds into the gigabits-per-second range, which is why this standard is identified as Wi‑Fi 5. By contrast, older options like 802.11g are slower 2.4 GHz standards, 802.11n is Wi‑Fi 4 and came earlier with MIMO but not the same high‑frequency channel advantages, and 802.11ax is Wi‑Fi 6, a later generation with even more efficiency and features.

Wi-Fi 5 refers to the 802.11ac standard. This generation was designed as the successor to 802.11n (Wi-Fi 4) and is marketed by the Wi‑Fi Alliance as Wi‑Fi 5. It primarily uses the 5 GHz band, which offers more available spectrum and typically less interference than 2.4 GHz. It also leverages wider channel bandwidth (80 or 160 MHz) and more advanced modulation (up to 256-QAM), with improvements like MU‑MIMO in later implementations to boost throughput and capacity. These enhancements collectively push real-world speeds into the gigabits-per-second range, which is why this standard is identified as Wi‑Fi 5. By contrast, older options like 802.11g are slower 2.4 GHz standards, 802.11n is Wi‑Fi 4 and came earlier with MIMO but not the same high‑frequency channel advantages, and 802.11ax is Wi‑Fi 6, a later generation with even more efficiency and features.