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Zorluk: Çok zorWireless Networking Standards and Technologies

A network administrator is designing a dual-band 802.11ax (Wi-Fi 6) wireless deployment for a high-density office building where neighboring tenant networks already occupy portions of the wireless spectrum. The administrator needs to optimize performance, minimize interference, and adhere to wireless standards best practices. Which of the following strategies should the administrator implement? (Select TWO.)

  1. Restrict the 2.4 GHz band to 20 MHz channel widths assigned exclusively to non-overlapping channels (1, 6, or 11).Cevap
  2. B
    Configure 40 MHz channel bonding on the 2.4 GHz band using channels 3 and 9 to maximize throughput for legacy clients.
  3. Steer high-bandwidth dual-band devices to the 5 GHz band to take advantage of greater non-overlapping spectrum and wider channel options.Cevap
  4. D
    Assign adjacent 2.4 GHz channels such as 2, 5, and 8 to access points to increase overall wireless coverage density.

Cevap

The administrator should restrict the 2.4 GHz band to 20 MHz channel widths on non-overlapping channels (1, 6, or 11) and steer high-bandwidth dual-band devices to the 5 GHz band to leverage its expanded non-overlapping channel capacity.
Restricting 2.4 GHz Wi-Fi to 20 MHz channel widths on non-overlapping channels 1, 6, and 11 eliminates adjacent channel interference. Furthermore, directing high-capacity devices to the 5 GHz band takes advantage of significantly more non-overlapping channels, relieving 2.4 GHz congestion.

Adım Adım Çözüm

1
Analyze 2.4 GHz spectrum constraints.
Identify that the 2.4 GHz band has only three non-overlapping 20 MHz channels in North America/standard regulatory domains: channels 1, 6, and 11.
Using any other channels or bonding to 40 MHz causes adjacent channel interference (ACI) across neighboring frequencies.
2
Analyze 5 GHz spectrum capacity and band steering benefits.
Recognize that the 5 GHz band provides significantly more non-overlapping channels, higher throughput potential, and support for wider channel widths.
Steering capable dual-band clients to 5 GHz reduces airtime congestion on the 2.4 GHz radio and boosts overall throughput.

Anahtar Kavram

802.11 wireless spectrum management and channel overlap rules
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