CWNA-108 Practice Exam Tests Latest Updated on Oct-2021

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NEW QUESTION 75
You are being interviewed by ABC Company for employment as a wireless site survey expert.
The interviewing manager asks you what items should be included in a site survey report generated as part of a manual site survey process.
What answer would be accurate?

• A. Itemized list of equipment, licenses, and support contracts required for the facility
• B. Documentation proving proper entry of wall material types into the site survey software
• C. Documentation noting how each WLAN user group will authenticate to the network
• D. RF heat map illustrating coverage and signal quality for each frequency band

Answer: D

 

NEW QUESTION 76
What 802.11 network configuration would result in multiple stations broadcasting Beacon frames with the same BSSID but with different source addresses?

• A. An IBSS is used instead of a BSS.
• B. An SCA network is in use.
• C. Multiple APs have been loaded with the same configuration from an image file.
• D. A single AP supports multiple BSSs with different SSIDs.

Answer: A

 

NEW QUESTION 77
You are reconfiguring an AP to use the short guard interval. How long will the new guard interval duration be after the change?

• A. 104 ms
• B. 10 ms
• C. 400 ns
• D. 800 ns

Answer: C

 

NEW QUESTION 78
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 RADIUS server
• B. The Ethernet switch
• C. The root bridge
• D. All non-root bridges

Answer: C

 

NEW QUESTION 79
You are managing a wireless access point in autonomous mode using the Web based interface.
You capture traffic during this management task and notice that you can see the HTML code of the Web pages used for access point management. What error in administration could be the cause of this security concern?

• A. WPA2 is disabled on the WLAN
• B. IPSec is not in use for the management connection as recommended
• C. HTTP is in use instead of HTTPS
• D. A VPN with the AP is not established

Answer: C

 

NEW QUESTION 80
What term correctly completes the following sentence?
In an IEEE 802.11 frame, the IP packet is considered by the MAC layer to be a(n) _________.

• A. MAC Service Data Unit (MSDU)
• B. PLCP Service Data Unit (PSDU)
• C. MAC Protocol Data Unit (MPDU)
• D. PLCP Protocol Data Unit (PPDU)
• E. IP datagram

Answer: A

 

NEW QUESTION 81
When implementing PoE, what role is played by a switch?

• A. PSE
• B. PO
• C. Power splitter
• D. Midspan injector

Answer: A

 

NEW QUESTION 82
You are configuring an access point to use channel 128. What important fact should be considered about this channels?

• A. It is a 2.4 GHz frequency band 40 MHz channel, so it should not be used
• B. It is a 22 MHz channel so it will overlap with the channels above and below it
• C. It is a channel that likely requires DFS when used
• D. It is a channel that is unsupported by most access points

Answer: C

 

NEW QUESTION 83
Which one of the following frequency ranges is not specified for use by IEEE 802.11 radios as of
802.11-2012?

• A. 2.4000-2.4835 MHz
• B. 5.15-5.25 GHz
• C. 600-630 MHz
• D. 5.725-5.874 GHz

Answer: C

 

NEW QUESTION 84
Your manager asked you to locate a solution that allows for centralized monitoring of WLAN performance over time. He wants a single pane of glass for administration and monitoring of the solution. What do you recommend?

• A. Laptop based spectrum analyzers
• B. Overlay WLAN monitoring solution
• C. AP-based spectrum analysis
• D. laptop-based protocol analyzers

Answer: C

 

NEW QUESTION 85
You are using a tool that allows you to see signal strength for all APs in the area with a visual representation. It shows you SSIDs available and the security settings for each SSID. It allows you to filter by frequency band to see only 2.4 GHz networks or only 5 GHz networks. No additional features are available. What kind of application is described?

• A. Protocol analyzer
• B. Spectrum analyzer
• C. Site survey utility
• D. WLAN discovery tool

Answer: D

 

NEW QUESTION 86
In addition to coverage analysis results, what should be included in a post-deployment site survey report to ensure WLAN users experience acceptable performance?

• A. Application Layer protocol availability analysis results
• B. Capacity analysis results
• C. WAN interface analysts results
• D. Layer 4 protocol availability analysis results

Answer: B

 

NEW QUESTION 87
You are using a tool that allows you to see signal strength for all Aps in the area with a visual representation. It shows you SSIDs available and the security settings for each SSID. It allows you to filter by frequency band to see only 2.4 GHz networks or only 5 GHz networks. No additional features are available.
What kind of application is described?

• A. Protocol analyzer
• B. WLAN scanner tool
• C. Spectrum analyzer
• D. Site survey utility

Answer: B

 

NEW QUESTION 88
What statement about 802.11 WLAN performance is true?

• A. In most WLANs, no special skill or tuning is required to get peak performance
• B. In modern networks, both centralized and distributed data forwarding work well for most standard office deployments
• C. To get the best performance out of an AP, you should disable data rates of 72 Mbps and lower
• D. WLANs perform better as more wireless clients connect with each AP

Answer: C

 

NEW QUESTION 89
As a consultant, you've been hired by XYZ Company to provide recommendations about client device selection, operation, and interoperability. What information should be considered to help them choose the right WLAN client devices?

• A. 802.11n OFDM is more susceptible to high-power, narrowband interference than 802.11a
• B. In order to earn Wi-Fi Alliance certification, 802.11n clients stations are required to support both
  2.4 and 5 GHz frequencies
• C. 802.11ac is not backwardly compatible with 802.11n or 802.11a.
• D. 802.11ac devices support the features of the VHT PHY only in the 5 GHz frequency band.
• E. When HR/DSSS devices are present, VHT MCS rates are disabled for the entire BSS.

Answer: D

 

NEW QUESTION 90
What statements about the beamwidth of an RF antenna are true?

• A. The beamwidth patterns on an antenna polar chart indicate the point at which the RF signal stops propagating.
• B. Horizontal and vertical beamwidth are calculated at the points in which the main lobe decreases power by 3 dB
• C. When antenna gain is lower, the beamwidth is also lower in both the horizontal and vertical dimensions.
• D. Vertical beamwidth is displayed (in degree) on the antenna's Azimuth chart.

Answer: B

 

NEW QUESTION 91
In an 802.11 2.4 GHz system, what 22 MHz channels are considered non-overlapping?

• A. 7 and 11
• B. 1 and 5
• C. 2 and 8
• D. 4 and 6

Answer: D

 

NEW QUESTION 92
What feature(s) are most likely to be supported by 802.11 enterprise-class WLAN controllers?
(Choose 4)

• A. BGP and Frame Relay
• B. Captive web portals
• C. IGMP snooping
• D. 802.1p and DSCP QoS
• E. Link aggregation / port trunking

Answer: B,C,D,E

 

NEW QUESTION 93
During a post-implementation survey, you have detected a non-802.11 wireless device transmitting in the area used by handheld 802.11g scanners. What is the most important factor in determining the impact of this non-802.11 device?

• A. Airtime utilization
• B. Protocols utilized
• C. Channel occupied
• D. Receive sensitivity

Answer: A

Explanation:
Explanation/Reference:

 

NEW QUESTION 94
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