Certified Wireless Network Administrator (CWNA-106) Practice Test

Questions # 31:

What problems may occur when there are hidden nodes in the BSS?

Options:

Increase in downlink (transmitted by AP) frame retries

High retransmission count for a subset of client stations

Use of frame fragmentation with fragment bursts

Excessive use of null data frames

Duration values vary widely in each data frame

Questions # 32:

You are implementing a VHT-capable AP. Which one of the following channels is available in the 802.11ac amendment to the 802.11-2012 standard, which was not available in the standard before this amendment?

Questions # 33:

In a Wi-Fi client configuration utility, what feature is most likely to be user configurable?

Options:

802.1p to WMM mappings

SNMPv3 Users

WMM-PS Dozing Interval

RADIUS Server IP Address

EAP Authentication Type

Questions # 34:

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

Options:

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

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

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

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

Questions # 35:

In an 802.11 2.4 GHz system, what 22 MHz channels are considered non-overlapping? (Choose 2)

Options:

Channels 5 and 10

Channels 1 and 5

Channels 3 and 7

Channels 2 and 8

Channels 8 and 11

Channels 10 and 13

Questions # 36:

What component of the 802.11 standard allows stations to reserve access to the RF medium for a specified period of time?

Options:

Short guard intervals

DTIM Interval

Listen Interval

Probe Request frames

RTS or CTS frames

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