Match each IEEE 802.11 wireless standard with its corresponding operating frequency bands,… — CompTIA Network+

Match each IEEE 802.11 wireless standard with its corresponding operating frequency bands, maximum channel bonding capabilities, and key technological features.

IEEE 802.11gOperates legacy devices in the $2.4\text{ GHz}$ band using OFDM with a maximum theoretical data rate of $54\text{ Mbps}$ using $20\text{ MHz}$ channels.
IEEE 802.11n (Wi-Fi 4)Introduced dual-band ( $2.4\text{ GHz}$ and $5\text{ GHz}$ ) capability, MIMO spatial streams, and $40\text{ MHz}$ channel bonding.
IEEE 802.11ac (Wi-Fi 5)Operates exclusively in the $5\text{ GHz}$ band, supporting up to $160\text{ MHz}$ channel bonding, 256-QAM modulation, and downlink MU-MIMO.
IEEE 802.11ax (Wi-Fi 6)Operates across $2.4\text{ GHz}$ , $5\text{ GHz}$ , and $6\text{ GHz}$ bands, implementing OFDMA subcarriers, BSS coloring, and Target Wake Time (TWT).

Cevap

IEEE 802.11g pairs with

2.4\text{ GHz}

OFDM at

54\text{ Mbps}

; IEEE 802.11n pairs with dual-band MIMO and

40\text{ MHz}

channels; IEEE 802.11ac pairs with

5\text{ GHz}

-only operation, 256-QAM, and

160\text{ MHz}

channels; IEEE 802.11ax pairs with multi-band operation, OFDMA, and BSS coloring.

Each Wireless standard maps directly to its core specifications: 802.11g provides

54\text{ Mbps}

via OFDM in

2.4\text{ GHz}

; 802.11n introduces dual-band MIMO and

40\text{ MHz}

channel bonding; 802.11ac operates strictly in

5\text{ GHz}

with 256-QAM up to

160\text{ MHz}

channel width; and 802.11ax introduces OFDMA, BSS coloring, and TWT for high-density environments across

2.4

5

, and

6\text{ GHz}

frequencies.

Adım Adım Çözüm

Identify legacy single-band

2.4\text{ GHz}

standards using basic OFDM.

IEEE 802.11g provides up to

54\text{ Mbps}

in the

2.4\text{ GHz}

band.

802.11g was designed as an upgrade to 802.11b on the

2.4\text{ GHz}

spectrum.

Identify the standard that introduced MIMO spatial streams and dual-band flexibility.

IEEE 802.11n (Wi-Fi 4) supports both

2.4\text{ GHz}

and

5\text{ GHz}

with

40\text{ MHz}

channels.

802.11n was the first standard to leverage multiple antennas (MIMO) and

40\text{ MHz}

bonded channels across both bands.

Differentiate 802.11ac from 802.11ax by operating frequencies and modulation techniques.

802.11ac operates exclusively in

5\text{ GHz}

with 256-QAM and

160\text{ MHz}

bonding, whereas 802.11ax works on

2.4/5/6\text{ GHz}

with OFDMA.

802.11ac focuses on high throughput in

5\text{ GHz}

, while 802.11ax focuses on multi-band spectral efficiency with OFDMA.

Anahtar Kavram

Wireless Standards and Specifications

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