CompTIA A+ 220-1101 | 2.3 Wireless Networks

Reviews the WiFi Standards

802.11a

• Operates on 5GHz

• 54 Mbps

• Smaller range, more prone to signal absorption due to high frequency

802.11a

• Operates on 5GHz and has a speed of 54 Mbps

802.11b

• Operates on 2.4GHz

• 11 Mbps

• Better range, signal bounces off of objects due to lower frequency

802.11b

• Operates on 2.4GHz and has a speed of 11 Mbps

802.11g

• Operates on 2.4GHz

• Speed of 54 Mbps

• Backwards compatible with 802.11b

802.11g

• Operates on 2.4GHz and has a speed of 54 Mbps

802.11g

• Backwards compatible with 802.11b

802.11n

• WiFi 4

• Operates on 5 or 2.4 GHz

• 40MHz bandwidth

• Up to 600 Mbps

• Allows MIMO (multiple input | multiple output)

802.11n

WiFi 4

802.11n

• Operates on 5 or 2.4 GHz and has a speed of up to 600 Mbps

802.11ac

• WiFi 5

• Operates on 5GHz

• Up to 160 MHz bandwidth

• Allows for MU MIMO (multi user - multiple input | multiple output)

802.11ac

WiFi 5

802.11ac

• Operates on 5GHz and speeds up to 160 MHz bandwidth

802.11ax

• WiFi 6

• Operates on 5 or 2.4 GHz

• 20, 40, 80, or 160 MHz bandwidth

• Speeds of up to 1.2 Gbps

802.11ax

WiFi 6

802.11ax

• Operates on 5 or 2.4 GHz and has speeds of up to 1.2 Gbps

Orthogonal Frequency-Division Multiple Access (OFDMA)

• Feature of 802.11ax

• Allows multiple devices to transmit data without efficiency loss