CWNA WLAN Design & Site Survey 3

Question 1

What is the purpose of a post-deployment validation survey?

Accepted Answer

To verify that the deployed WLAN meets the original design requirements

Answer

A post-deployment validation survey confirms that the installed WLAN achieves the coverage, capacity, and performance targets specified in the design and site survey.

Question 2

Which site survey methodology involves associating with APs and actively measuring actual connection performance such as throughput and latency?

Accepted Answer

Active survey

Answer

An active survey requires the survey client to associate with APs and exchange data, providing real-world throughput, latency, and connection quality measurements at each location.

Question 3

From an RF perspective, what is the fundamental requirement for supporting seamless client roaming between APs?

Accepted Answer

Adjacent APs must have overlapping coverage areas so the client can detect both simultaneously

Answer

Seamless roaming requires overlapping RF coverage so a client can detect and evaluate the next AP before its connection to the current AP becomes unusable.

Question 4

What is the main advantage of the 5 GHz band over the 2.4 GHz band for enterprise WLAN design?

Accepted Answer

More non-overlapping channels available and significantly less RF congestion

Answer

The 5 GHz band offers up to 25 non-overlapping 20 MHz channels in the US and suffers far less interference from consumer electronics compared to the congested 2.4 GHz band.

Question 5

What is multipath and how does it affect WLAN performance?

Accepted Answer

RF signals reflecting off surfaces and arriving at the receiver at slightly different times, causing signal distortion

Answer

Multipath occurs when RF signals bounce off walls, floors, and objects and arrive at the receiver along different paths at slightly different times, potentially causing destructive interference and degraded performance.

CWNA - Wireless Network Administrator Practice Test

CWNA - Wireless Network Administrator Practice Test

CWNA WLAN Design & Site Survey 3