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CWNP CWNA-109 Practice Test - Questions Answers, Page 8

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Question 71

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What is the most effective method for testing roaming in relation to 802.11 VoIP handsets?

Use a spectrum analyzer to monitor RF activity during a VoIP call.
Use a spectrum analyzer to monitor RF activity during a VoIP call.
Use a protocol analyzer to capture the traffic generated when a laptop roams.
Use a protocol analyzer to capture the traffic generated when a laptop roams.
Place a call with the handset and move around the facility to test quality during roaming.
Place a call with the handset and move around the facility to test quality during roaming.
Use the built-in roaming monitor built into all VoIP handsets.
Use the built-in roaming monitor built into all VoIP handsets.
Suggested answer: C
Explanation:

The most effective method for testing roaming in relation to 802.11 VoIP handsets is toplace a call with the handset and move around the facility to test quality during roaming. This method allows you to evaluate the actual performance and user experience of VoIP calls over wireless networks, as well as identify any potential issues such as signal strength, interference, latency, jitter, packet loss, or handoff delays. A spectrum analyzer can only show you the RF activity during a VoIP call, but not how it affects the voice quality or roaming behavior. A protocol analyzer can capture the traffic generated when a laptop roams, but it cannot simulate the characteristics of a VoIP handset such as battery life, antenna design, codec support, or QoS features. A built-in roaming monitor is not a common feature in all VoIP handsets, and it may not provide accurate or comprehensive information about the roaming process.Reference:[CWNP Certified Wireless Network Administrator Official Study Guide: Exam CWNA-109], page 487; [Voice over Wireless LAN 4.1 Design Guide], page 6-19.

asked 16/09/2024
Sandeep Ramakrishnan
56 questions

Question 72

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Which one of the following channels can be used for VHT transmissions according to the 802.11 specification?

6
6
144
144
1
1
11
11
Suggested answer: B
Explanation:

The channel that can be used for VHT transmissions according to the 802.11 specification ischannel 144. VHT stands for Very High Throughput and is the PHY layer specification for 802.11ac devices. VHT transmissions can use channel bandwidths of 20 MHz, 40 MHz, 80 MHz, or 160 MHz in the 5 GHz band. Channel 144 is one of the channels in the 5 GHz band that can support VHT transmissions with any of these bandwidths. Channel 6, channel 1, and channel 11 are channels in the 2.4 GHz band that cannot support VHT transmissions, as they are only compatible with legacy (802.11b/g/n), HT (802.11n), or ERP (802.11g) transmissions with up to 20 MHz bandwidth.Reference:[CWNP Certified Wireless Network Administrator Official Study Guide: Exam CWNA-109], page 214; [CWNA: Certified Wireless Network Administrator Official Study Guide: Exam CWNA-109], page 204.

asked 16/09/2024
Henri Geimer
40 questions

Question 73

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In a mesh BSS (MBSS), according to the 802.11 standard, what device connect the mesh to an Ethernet network?

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Question 74

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What statement about 802.11 WLAN bridges is true?

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Question 75

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

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Question 76

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An AP is advertised as a tri-band, 4x4:4, Wi-Fi 6, 802. 11ax AP. Based on this information and assuming it is correctly advertised, what can be determined as certainly true about this AP?

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Question 77

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A natural disaster has occurred in a remote area that is approximately 57 miles from the response team headquarters. The response team must implement a local wireless network using 802.11 WLAN access points. What is the best method, of those listed, for implementation of a network back-haul for communications across the Internet in this scenario?

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Question 78

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Which one of the following 802.11 PHYs is more likely to be used in an industrial deployment but not likely to be used in standard office deployments?

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Question 79

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You must plan for POE in an office environment. Which one of these devices is least likely to be a POE PSE?

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Question 80

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A POE device requires 47 W of power. What POE specification should be used?

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Total 122 questions
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When using a spectrum to look for non Wi-Fi interference sources, you notice significant interference across the entire 2.4 GHz band (not on a few select frequencies) within the desktop area of a users workspace, but the interference disappears quickly after just 2 meters. What is the most likely cause of this interference?
Which one of the following channels can be used for VHT transmissions according to the 802.11 specification?
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