thinQmaster Virtual testing partner Adaptive practice exams that find your weak spots and drill them. Every answer explained. From $69
Enroll

thinQmaster

Find your exam

Five questions free, before you decide.

Step 1 · choose a vendor

In one of our camps? Your practice exams come with the tuition — they are on your study page already.

Wireless & Mobility · Foundational

IEEE 802.11n

2009 amendment (Wi-Fi 4) adding MIMO, 40 MHz channels, and frame aggregation in 2.4 and 5 GHz, up to 600 Mbps.

Definition

802.11n defined the High Throughput (HT) PHY with up to 4 spatial streams, 40 MHz channel bonding, short guard interval, A-MPDU/A-MSDU aggregation, and block acknowledgments. Its maximum data rate is 600 Mbps with 4 streams, 40 MHz, and short GI. It works in both 2.4 and 5 GHz.

Exam tip

802.11n = Wi-Fi 4, dual-band, 4 SS, 600 Mbps max.

Related terms