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Difficulty: MediumWireless Networking Standards and Technologies

A network administrator is resolving severe signal congestion in an office building caused by an overcrowded 2.4 GHz radio frequency spectrum. To ensure reliable throughput, the administrator plans to deploy legacy and modern equipment operating exclusively in the 5 GHz frequency band. Which TWO of the following IEEE standards operate exclusively in the 5 GHz band?

  1. 802.11acAnswer
  2. B
    802.11g
  3. 802.11aAnswer
  4. D
    802.11b

Answer

The 802.11a and 802.11ac standards operate exclusively in the 5 GHz frequency band.
The correct options are 802.11a and 802.11ac because both standards are specified to operate exclusively within the 5 GHz frequency band. Using 5 GHz avoids the noise and channel saturation common to the 2.4 GHz band.

Step-by-Step Solution

1
Identify the target frequency requirements in the scenario.
The scenario requires wireless standards that operate exclusively in the 5 GHz frequency band.
The network administrator needs to bypass 2.4 GHz spectrum congestion.
2
Evaluate the operational frequency bands for each candidate IEEE 802.11 standard.
802.11b and 802.11g operate strictly at 2.4 GHz. 802.11a and 802.11ac operate strictly at 5 GHz.
Understanding standard-to-frequency mappings allows proper selection for noise isolation.
3
Select the correct wireless standards.
802.11a and 802.11ac match the requirement for exclusive 5 GHz band operation.
Both standards avoid the 2.4 GHz range entirely.

Key Concept

802.11 Wireless Standards Frequency Assignments
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Topics

Wireless Networking Standards and Technologies

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