220-801 · Question #60
Which of the following characteristics of wireless networks is TRUE?
The correct answer is B. 802.11n has a greater reach. Among the listed 802.11 standards, 802.11n provides the greatest range due to its use of MIMO antenna technology and support for both 2.4 GHz and 5 GHz bands.
Question
Which of the following characteristics of wireless networks is TRUE?
Options
- A802.11g operates at 5.0Ghz.
- B802.11n has a greater reach.
- C802.11a operates at 2.4Ghz.
- D802.11b is the fastest.
How the community answered
(70 responses)- A7% (5)
- B89% (62)
- C1% (1)
- D3% (2)
Why each option
Among the listed 802.11 standards, 802.11n provides the greatest range due to its use of MIMO antenna technology and support for both 2.4 GHz and 5 GHz bands.
802.11g operates at 2.4 GHz, not 5.0 GHz; the 5 GHz band is used by 802.11a.
802.11n introduced Multiple Input Multiple Output (MIMO) technology, which uses multiple antennas to transmit and receive data simultaneously, significantly increasing both throughput and effective range compared to earlier standards like 802.11a, 802.11b, and 802.11g.
802.11a operates at 5 GHz, not 2.4 GHz, making this statement factually incorrect.
802.11b is one of the oldest Wi-Fi standards with a maximum throughput of only 11 Mbps, making it the slowest standard listed, not the fastest.
Concept tested: IEEE 802.11 wireless standards frequency and range
Source: https://learn.microsoft.com/en-us/windows-hardware/drivers/network/802-11-wireless-lan-architecture
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