300-360 · Question #220
What is the attenuation of a wireless signal that passes through a cider block wall?
The correct answer is B. 4 dB. Standard RF propagation tables used in wireless site surveys assign approximately 4 dB of signal attenuation for a single cinder block (concrete masonry unit) wall. This is a commonly tested value in Cisco wireless certifications. For reference, typical attenuation values…
Question
What is the attenuation of a wireless signal that passes through a cider block wall?
Options
- A3 dB
- B4 dB
- C6 dB
- D12 dB
How the community answered
(28 responses)- A7% (2)
- B89% (25)
- D4% (1)
Explanation
Standard RF propagation tables used in wireless site surveys assign approximately 4 dB of signal attenuation for a single cinder block (concrete masonry unit) wall. This is a commonly tested value in Cisco wireless certifications. For reference, typical attenuation values include: drywall/interior partitions (~3 dB), cinder block (~4 dB), glass with metal frame (~6 dB), and reinforced concrete (~12–15 dB). Understanding these values is essential during pre-survey planning and path-loss calculations to predict coverage before physically deploying APs.
Topics
Community Discussion
No community discussion yet for this question.