Which Wi-Fi Standard Supports 5GHz Frequency?
A local company is planning to upgrade its current wireless network solution to achieve better performance and improve employees' experience. The solution will require a 5GHz radio band to support all current company devices. Which of the following should be considered as an option for the upgrade?
Community Votes
100% of anonymous learners picked answer C. Votes are pick records left by other test-takers — they are not the verified answer.
Community Insight
Tests identification of dual-band Wi-Fi capabilities, with the common trap being misattribution of 5GHz support to widely used but 2.4GHz-only standards like 802.11g.
This question evaluates understanding of IEEE 802.11 amendments and their operational frequency bands. The networking community universally agrees that 802.11n is the correct upgrade path as it uniquely supports the required 5GHz spectrum among the given choices.
Option D (802.11g) is often selected incorrectly because it was a dominant standard for years, but candidates frequently forget it is strictly limited to the congested 2.4GHz band.
Community Discussion (3 comments)
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Expert Analysis
Why the Answer Is Correct
802.11n (Wi-Fi 4) was the first mainstream standard to introduce dual-band operation, supporting both 2.4GHz and 5GHz frequencies. It also utilizes MIMO technology to significantly boost throughput and range, directly addressing the company’s need for better performance. Selecting this standard ensures compatibility with modern devices while leveraging the less crowded 5GHz spectrum.Why the Other Options Are Wrong
Options A, B, and D represent legacy IEEE 802.11 amendments that exclusively operate on the 2.4GHz band. The original 802.11 specification, along with 802.11b and 802.11g, lack the hardware architecture to transmit on 5GHz. Consequently, they cannot meet the explicit requirement for a 5GHz radio band in the scenario.Community Comment Notes
Voters overwhelmingly confirmed 802.11n as the right choice, emphasizing it is the sole 5GHz-compatible option listed (Comment 2, 3). Users noted that 802.11n consistently appears as the correct answer for 5GHz upgrade questions on the N10-008 exam (Comment 1). This aligns with official study guides that highlight n as the foundational dual-band standard.Official Reference
Exam Strategy
Create a quick reference table mapping each 802.11 amendment to its frequency band, max theoretical speed, and key features. During the exam, treat keywords like '5GHz', 'dual-band', or 'modern performance' as immediate triggers to select 802.11n, 802.11ac, or 802.11ax over legacy alternatives.