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Zorluk: OrtaWireless Networking Standards and Technologies

A network administrator is evaluating wireless deployment options for an office expansion. The deployment must accommodate both high-speed 5 GHz client workstations and existing legacy 2.4 GHz equipment. Which of the following statements correctly describe the supported frequency bands and characteristics of the IEEE 802.11ac and IEEE 802.11ax wireless standards? (Select TWO.)

  1. IEEE 802.11ac operates exclusively within the 5 GHz frequency band.Cevap
  2. IEEE 802.11ax is designed to operate on both the 2.4 GHz and 5 GHz frequency bands.Cevap
  3. C
    IEEE 802.11ac natively broadcasts on the 2.4 GHz frequency band to maintain backwards compatibility with 802.11g clients.
  4. D
    IEEE 802.11ax replaces standard 2.4 GHz channel rules by allowing adjacent channels 2, 3, and 4 to operate without overlapping.

Cevap

The correct statements are that IEEE 802.11ac operates exclusively in the 5 GHz frequency band, and IEEE 802.11ax operates on both the 2.4 GHz and 5 GHz frequency bands.
IEEE 802.11ac (Wi-Fi 5) operates exclusively within the 5 GHz band. IEEE 802.11ax (Wi-Fi 6) is a dual-band standard that operates across both 2.4 GHz and 5 GHz bands (and 6 GHz in Wi-Fi 6E), providing enhanced performance and legacy device support across both frequencies.

Adım Adım Çözüm

1
Analyze the operational frequency characteristics of the IEEE 802.11ac standard.
IEEE 802.11ac (Wi-Fi 5) operates only in the 5 GHz band to deliver high-bandwidth throughput.
802.11ac was specified without 2.4 GHz radio support; any 2.4 GHz connectivity on an 802.11ac access point relies on legacy standards like 802.11n.
2
Analyze the operational frequency characteristics of the IEEE 802.11ax standard.
IEEE 802.11ax (Wi-Fi 6) reintroduces and optimizes 2.4 GHz support alongside 5 GHz.
802.11ax is designed as a dual-band (and tri-band with 6 GHz) standard to enhance efficiency for both high-bandwidth clients and low-power IoT devices operating on 2.4 GHz.
3
Evaluate the incorrect choices regarding 2.4 GHz operation and channel overlap rules.
Discard claims that 802.11ac operates on 2.4 GHz natively or that 802.11ax eliminates 2.4 GHz channel overlap issues on adjacent channels.
Physical channel overlap rules in the 2.4 GHz spectrum (where channels 1, 6, and 11 are non-overlapping) remain constant regardless of Wi-Fi standard generational updates.

Anahtar Kavram

802.11 Wireless Standards Frequency Capabilities
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Wireless Networking Standards and Technologies

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