CompTIA
220-1201 · Question #180
Which of the following has the best penetration through physical objects, such as walls?
The correct answer is A. 2.4GHz. 2.4GHz Wi-Fi signals have better penetration through walls and other obstacles compared to 5GHz and 6GHz. Lower frequency waves (like 2.4GHz) travel farther and are less absorbed by physical barriers.
Submitted by noor.lb· Mar 30, 2026
Question
Which of the following has the best penetration through physical objects, such as walls?
Options
- A2.4GHz
- B5GHz
- C6GHz
- DNFC
How the community answered
(30 responses)- A90% (27)
- B7% (2)
- C3% (1)
Explanation
2.4GHz Wi-Fi signals have better penetration through walls and other obstacles compared to 5GHz and 6GHz. Lower frequency waves (like 2.4GHz) travel farther and are less absorbed by physical barriers.
Topics
#Wi-Fi frequency bands#Signal penetration#Wireless propagation
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