CWNA-108 sample questions

Question 1

When implementing PoE, what role is played by a switch?

Accepted Answer

PSE

Answer

Midspan injector

Answer

PD

Answer

Power splitter

Question 2

You have been tasked with creating a wireless link between two buildings on a single campus. The link must support at least 150 Mbps data rates. What kind of WLAN technology role should you deploy?

Accepted Answer

Wireless bridging

Answer

WPAN

Answer

IBSS

Answer

Access BSS

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?

Accepted Answer

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

Answer

Spectrum analysis to locate and identify RF interference sources.

Answer

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

Answer

Protocol analysis to discover channel use on neighboring APs.

Question 4

In a long-distance RF link, what statement about Fade Margin is true?

Accepted Answer

Fade Margin is an additional pad of signal strength designed into the RF system to compensate for unpredictable signal fading.

Answer

Fade Margin is unnecessary on a long-distance RF link if more than 80% of the first Fresnel zone is clear of obstructions.

Answer

The Fade Margin is a measurement of signal loss through free space and is a function of frequency and distance.

Answer

The Fade Margin of a long-distance radio link should be equivalent to the receiver’s low noise filter gain.

Question 5

You are deploying a WLAN with the access points configured for 10 mW of output power on the 2.4 GHz radios and 20 mW of output power on the 5GHz radios. Some semi-directional antennas are also in use. What kind of deployment is described?

Accepted Answer

SOHO

Answer

Residential

Answer

High density

Answer

Standard office

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Free CWNA-108 sample questions

When implementing PoE, what role is played by a switch?

You have been tasked with creating a wireless link between two buildings on a single campus. The link must support at least 150 Mbps data rates. What kind of WLAN technology role should you deploy?

In a long-distance RF link, what statement about Fade Margin is true?

You are deploying a WLAN with the access points configured for 10 mW of output power on the 2.4 GHz radios and 20 mW of output power on the 5GHz radios. Some semi-directional antennas are also in use. What kind of deployment is described?

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