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All CWNA-109 Test Inside CWNP Questions

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Question 8

When compared with legacy Power Save mode, how does VHT TXOP power save improve battery life for devices on a WLAN?

Options:

A.

Legacy Power Save mode was removed in the 802.11ac amendment.

B.

VHT TXOP power save allows the WLAN transceiver to disable more components when in a low power state.

C.

VHT TXOP power save uses the partial AID in the preamble to allow clients to identify frames targeted for them.

D.

VHT TXOP power save allows stations to enter sleep mode and legacy Power Save does not.

Question 9

The IEEE 802.11-2012 standard requires VHT capable devices to be backward compatible with devices using which other 802.11 physical layer specifications (PHYs)?

Options:

A.

OFDM

B.

HR/DSSS

C.

ERP-PBCC

D.

DSSS-OFDM

Question 10

You are troubleshooting a problem with interference from a non-802.11 device. Given that the device is not a WLAN device, you cannot use a protocol analyzer and have chosen to use a spectrum analyzer. You want to view the signal from the interfering device over time to see the activity that is generating.

What common spectrum analyzer view should you use for this analysis?

Options:

A.

APs

B.

Waterfall/Spectrogram

C.

Real-time FFT

D.

Clients

Question 11

When considering data rates available in HT and VHT PHY devices, in addition to the modulation, coding, channel width, and spatial streams, what impacts the data rate according to the MCS tables?

Options:

A.

Frequency band in use

B.

client drivers

C.

guard interval

D.

Antenna Height

Page: 2 / 8
Exam Code: CWNA-109
Exam Name: Certified Wireless Network Administrator
Last Update: Nov 7, 2024
Questions: 122
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