Download Certified Wireless Network Administrator.CWNA-107.ActualTests.2018-11-18.58q.vcex

Vendor: CWNP
Exam Code: CWNA-107
Exam Name: Certified Wireless Network Administrator
Date: Nov 18, 2018
File Size: 34 KB

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Question 1
What statement about the beamwidth of an RF antenna is true? 
  1. Horizontal and vertical beamwidth are calculated at the point where the main lobe decreases power by 3 dB.
  2. Vertical beamwidth is displayed (in degrees) on the antenna’s Azimuth chart.
  3. When antenna gain is lower, the beamwidth is also lower in both the horizontal and vertical dimensions.
  4. The beamwidth patterns on an antenna polar chart indicate the point at which the RF signal stops propagating.
Correct answer: A
Question 2
Which one of the following is not a factor considered when calculating the Link Budget for an outdoor point-to-point WLAN bridge link?
  1. MU-MIMO capabilities of the bridges
  2. Receive antenna gain
  3. Transmit power
  4. Operating frequency
Correct answer: A
Explanation:
Question 3
What best describes WPA2 in relation to 802.11 wireless networks?
  1. WPA2 is specified in the 802.11 standard as implementing CCMP/AES.
  2. WPA2 is the standard that defines security for WLANs.
  3. WPA2 is a certification created by the Wi-Fi Alliance that validates devices correctly implement CCMP/AES.
  4. WPA2 is the second version of WPA and it enhances security through the use of TKIP instead of WEP.
Correct answer: B
Question 4
An IEEE 802.11 amendment is in the daft state. What impact does this draft amendment have on the 802.11 standard?
  1. No impact: Until an amendment is ratified, it does not become part of the standard.
  2. Devices will be released based on the draft amendment and the draft amendment features are part of the standard.
  3. The standard is changed to reflect the new capabilities as soon as an amendment enters the draft stage.
  4. No impact: Draft amendments do not become part of the standard until a working group is formed.
Correct answer: A
Question 5
You are implementing a VHT-capable AP. Which one of the following channels is available in the 802.11-2016 standard that was not available before the ratification of 802.11 ac?
  1. 153
  2. 161
  3. 144
  4. 56 
Correct answer: C
Question 6
What statement is true concerning the use of Orthogonal Frequency Division Multiplexing (OFDM) modulation method in IEEE 802.11 WLANs?
  1. OFDM was used by Frequency Hopping Spread Spectrum (FHSS) PHY devices.
  2. OFDM was first introduced in 802.11 and is used by the ERP, HT and VHT PHYs as well.
  3. OFDM implement BPSK modulation to allow for data rates up to 7 Gbps.
  4. OFDM modulation is used only in 5 GHz 802.11 transmissions.
Correct answer: D
Explanation:
Reference http://www.rhyshaden.com/802_11a.htm
Reference http://www.rhyshaden.com/802_11a.htm
Question 7
Which IEEE 802.11 physical layer (PHY) specification includes support for and compatibility with both ERP and HR/DSSS?
  1. VHT (802.11ac)
  2. OFDM (802.11a)
  3. DSSS (802.11-Prime)
  4. HT (802.11n)
Correct answer: D
Question 8
An 802.11-based network uses an AP and has several connecting clients. The clients include iPhones, iPads, laptops and one desktop. What WLAN use case is represented?
  1. WPAN
  2. Ad-hoc
  3. BSS
  4. IBSS
Correct answer: C
Question 9
What factor is likely to cause the least impact on the application layer throughput of an 802.11n client station in a 2.4 GHz HT BSS? 
  1. Increasing or decreasing the number of spatial streams in use by the client station and AP
  2. Implementation of several other clients in the same BSS using 802.11 g radios
  3. Implementing Fast BSS Transition (FT) for roaming
  4. RF interference from more than 10 nearby Bluetooth transmitters
Correct answer: A
Question 10
What ID is typically mapped to an AP’s MAC address if a single BSS is implemented? 
  1. VLAN ID
  2. BSSID
  3. Device ID
  4. SSID
Correct answer: B
Explanation:
Reference https://technet.microsoft.com/en-us/library/cc757419(v=ws.10).aspx
Reference https://technet.microsoft.com/en-us/library/cc757419(v=ws.10).aspx
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