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Certified Wireless Network Administrator Questions and Answers

Question 1

An RF signal sometimes bends as it passes through some material other than free space. What is the term that describes this behavior?

Options:

A.

Refraction

B.

Warping

C.

Scattering

D.

Reflection

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Question 2

What statement about 802.11 WLAN bridges is true?

Options:

A.

WLAN bridges only work in the 2.4 GHz frequency band and they support only SISO communications

B.

WLAN bridges must use a channel with acceptable SNR at both transceivers to maintain the desired data rate bi-directionally

C.

WLAN bridges may support MIMO communications, but only if used in the 5 GHz frequency band

D.

WLAN bridges must be implemented such that no interference occurs on the channel anywhere between the two endpoints used to establish the bridge

Question 3

You were previously onsite at XYZ’s facility to conduct a pre-deployment RF site survey. The WLAN has been deployed according to your recommendations and you are onsite again to perform a post-deployment validation survey.

When performing this type of post-deployment RF site survey voice over Wi-Fi, what is an action that must be performed?

Options:

A.

Spectrum analysis to locate and identify RF interference sources.

B.

Frequency-band hopping analysis to detect improper RF channel implementations.

C.

Application analysis with an active phone call on an VoWiFi handset.

D.

Protocol analysis to discover channel use on neighboring APs.