Exit demo CWNA-109 Certified Wireless Network Administrator PDF format · free preview

CWNP CWNA-109 - Questions & Answers

Free preview · every answer includes a full explanation

Product page: https://prepkeys.com/cwna-109.html

Question 1
Single choice

What statement is true concerning the use of Orthogonal Frequency Division Multiplexing (OFDM) modulation method in IEEE 802.11 WLANs?

A.

OFDM implements BPSK modulation to allow for data rates up to 7 Gbps.

B.

OFDM was first introduced in 802.11a and is used by the ERP, HT and VHT PHYs as well.

C.

OFDM modulation is used only in 5 GHz 802.11 transmissions.

D.

OFDM was used by Frequency Hopping Spread Spectrum (FHSS) PHY devices.

Question 2
Single choice

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

A.

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

B.

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

C.

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

D.

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

Question 3
Single choice

XYZ Company has decided to install an 802.11 WLAN system that will support 1083 wireless users, but they are concerned about network security. XYZ is interested in deploying standardized security features.
In addition to WPA2-Enterprise with PEAP and role-based access control, XYZ would like to support management frame protection as well as a fast secure roaming protocol for future mobile handsets.

As XYZ Company selects a product to deploy, what two IEEE amendments, which are included in 802.11- 2016, and 802.11-2020 should be supported to provide the management frame protection and fast secure roaming security features?

A.

802.11j and 802.11z

B.

802.11r and 802.11w

C.

802.11j and 802.11k

D.

802.11k and 802.11v

Question 4
Single choice

Return Loss is the decrease of forward energy in a system when some of the power is being reflected back toward the transmitter.

What will cause high return loss in an RF transmission system, including the radio, cables, connectors and antenna?

A.

The use of 50 ohm cables longer than one meter in the RF system

B.

High output power at the transmitter and use of a low-gain antenna

C.

A significant impedance mismatch between components in the RF system

D.

A Voltage Standing Wave Ratio (VSWR) of 1:1

Question 5
Single choice

When an ACK frame is not received by the transmitting STA, what is assumed?

A.

The receiver processed the frame, but did not respond with an ACK frame because 802.11w is enabled

B.

The frame was correctly delivered

C.

The frame was not delivered and must be retransmitted

D.

The receiver is offline

Question 6
Single choice

What security option for 802.11 networks supports SAE and requires protected management frames?

A.

WPA

B.

WPA2

C.

WPA3

D.

OWE

Question 7
Single choice

What statement describes the authorization component of a AAA implementation?

A.

Verifying that a user is who he says he is.

B.

Implementing a WIPS as a full-time monitoring solution to enforce policies.

C.

Granting access to specific network services or resources according to a user profile.

D.

Validating client device credentials against a database.

Question 8
Single choice

ABC Company is planning a point-to-multipoint outdoor bridge deployment with standalone (autonomous) 802.11 bridge units. 802.1X/EAP will be used for bridge authentication. A Linux-based RADIUS server will be used for authentication.

What device in the bridge implementation acts as the 802.1X Authenticator?

A.

The Ethernet switch

B.

The RADIUS server

C.

All non-root bridges

D.

The root bridge

Question 9
Single choice

Three access points are used within a facility. One access point is on channel 11 and the other two are on channel 1. The two access points using channel 1 are on either side of the access point using channel 11 and sufficiently apart so that they do not interfere with each other when they transmit frames.
Assuming no other APs are in the vicinity, is CCI still a possibility in this network and why?

A.

Yes, because the client devices connected to one of the channel 1 APs will transmit frames that reach the other channel 1 AP as well as clients connected to the other channel 1 AP.

B.

No, because the APs are far enough apart that no CCI will occur.

C.

No, because CCI only occurs in the 5 GHz frequency band.

D.

Yes, because channel 11 loops around and causes CCI with channel 1.

Question 10
Single choice

What is required when operating 802.11ax APS in the 6 GHz band using passphrase-based authentication?

A.

VHT PHY

B.

HT PHY

C.

SAE

D.

CCMP

Showing 10 of 146 questions · Unlock the full set