CWNP CWNP Certifications CWNA-106 Questions & Answers

• Question 111:

  What information is transmitted in the Beacon management frames of an HT access point to communicate about backward compatibility with ERP andHR/DSSS stations? (Choose 2)

  A. HT Protection mode

  B. Secondary channel offset

  C. RIFS mode

  D. Power save mode of clients

  Correct Answer: A

• Question 112:

  ABC Company is planning toinstall a new 802.11ac WLAN, but wants to upgrade its wired infrastructure first to provide the best user experience possible. ABC Company has hired you to perform the RF site survey. During the interview with the network manager, you are told that the newEthernet edge switches will support VoIP phones and 802.11 access points, both using 802.3 PoE. After hearing this information, what immediate concerns do you note?

  A. VoIP phones and 802.11 access points should not be powered by the same edge switch dueto distortion.

  B. The edge Ethernet switches should support Ether-channel to get the best results out of the network.

  C. If the switches are in optimal locations for VoIP phones, they are likely to be suboptimal locations for

  802.11 APs.

  D. The power budget in the edgeswitches must be carefully planned and monitored based on the number of supported PoE devices.

  Correct Answer: D

• Question 113:

  AP-1 is a 3x3:2 AP. STA-3 is a 3x3:3 client. What is the maximum number of spatial streams that can be used for a downlink HT-OFDM transmission from AP-1 to STA-3?

  A. One spatial stream, because the definition of the AP indicates that it is capable of only one spatial stream.

  B. Three spatial streams, because the definition of the client indicates that it is capable of only three spatial streams.

  C. Two spatial streams, because the definition of the AP indicates that it is capable of only two spatial streams.

  D. Three spatial streams, because the definition of the AP indicates that it is capable of only three spatial streams.

  Correct Answer: C

• Question 114:

  What standard isreferenced into the 802.11-2012 specification and is recommend for robust WLAN client security?

  A. SSID hiding

  B. WEP

  C. 802.1X/EAP

  D. IPSec VPN

  Correct Answer: C

• Question 115:

  Prior to association, what parameter can 802.11 client devices measure and use to select the optimal access point for association?

  A. Signal strength of access point beacons received

  B. Proximity to potential access points

  C. Retry rate of probe request and responseframes

  D. Average round trip time to reach the Internet DNS server

  E. Average round trip time to reach the IP router

  Correct Answer: A

• Question 116:

  Which data rate is supported by 802.11g radios that is not supported by 802.11a radios?

  A. 9 Mbps

  B. 11 Mbps

  C. 12 Mbps

  D. 54 Mbps

  E. 65 Mbps

  F. 130 Mbps

  Correct Answer: B

• Question 117:

  In an 802.11n 2.4 GHz BSS, what prevents each station fromusing the full network bandwidth (e.g. 130 Mbps) for user data throughput when multiple clients are actively exchanging data with the AP?

  A. Radio receiver hardware cannot process data as quickly as it can be transmitted.

  B. Half of the bandwidth is allocated to uplink traffic and half to downlink traffic.

  C. WLAN devices cannot detect collisions and must receive positive frame acknowledgment.

  D. APs do not have sufficient wired connection speeds to the LAN, even at 1 Gbps connections with 802.11n and earlier APs.

  Correct Answer: C

• Question 118:

  What factors will have the most significant impact on the amount of wireless bandwidth available to each station within a BSS? (Choose 2)

  A. The number of clientstations associated to the BSS

  B. The power management settings in theaccess point's beacons

  C. The presence of co-located (10m away) access points on non-overlapping channels

  D. The data rates at which nearby client stations are transmitting and receiving data

  E. The layer 3 protocol used by each station to transmit data over the wireless link

  Correct Answer: AD

• Question 119:

  What factors influence the distance that an RF signal can be effectively received? (Choose 3)

  A. Transmitting station's power source

  B. Receiving station's radio sensitivity

  C. Free Space Path Loss

  D. MAC layer encryption

  E. Transmitting station'soutput power

  F. Temperature in the Fresnel zone

  Correct Answer: BCE

• Question 120:

  In addition to throughput enhancements, what other improvements does a dual-band 802.11ac AP provide when compared with 802.11a/g APs? (Choose 2)

  A. Introduces "fast transition" roaming protocols for VoWiFi phones

  B. Better link reliability between 802.11a/b/g client devices and 802.11ac APs

  C. Improves service quality for real-time applications at greater distances

  D. Increases in receive sensitivity enhance RTLS location accuracy

  E. Stronger security with more robust encryption modes.

  Correct Answer: BC