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[General] Exam CWNP CWNA-109 Score | Clearer CWNA-109 Explanation

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【General】 Exam CWNP CWNA-109 Score | Clearer CWNA-109 Explanation

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P.S. Free & New CWNA-109 dumps are available on Google Drive shared by PrepAwayTest: https://drive.google.com/open?id=1I9mxcGwk4vTWQQJLLklXyRgrmZ7kMBbS
The validation of expertise, more career opportunities, salary enhancement, instant promotion, and membership of CWNP certified professional community. In this way, the CWNP Wireless Network Administrator (CWNA) (CWNA-109) can not only validate their skills and knowledge level but also put their careers on the right track. By doing this you can achieve your career objectives.
CWNP CWNA-109 Exam Syllabus Topics:
TopicDetails
Topic 1
  • WLAN Network Architecture and Design Concepts: This topic deals with describing and implementing Power over Ethernet (PoE). Furthermore, the topic covers different wireless LAN architectures, coverage requirements, roaming considerations, and common proprietary features in wireless networks.
Topic 2
  • WLAN Regulations and Standards: The topic discusses the roles of WLAN and networking industry organizations. It also addresses the concepts of various Physical Layer (PHY) solutions, spread spectrum technologies, and 802.11 WLAN functional concepts.
Topic 3
  • WLAN Network Security: It addresses the concepts of weak security options, security mechanisms for enterprise WLANs, and security options and tools used in wireless networks.
Topic 4
  • Radio Frequency (RF) Technologies: This topic explains the basic features and behavior of RF. It also discusses applying the basic concepts of RF mathematics and measurement. Lastly, the topic covers RF signal characteristics and the functionality of RF antennas.

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CWNP Wireless Network Administrator (CWNA) Sample Questions (Q75-Q80):NEW QUESTION # 75
You are troubleshooting a client issue on a Windows laptop. The laptop can see and connect to 2.4 GHz APs, but is does not even see 5 GHz APs. While evaluating the issue, you determine that this problem is happening for all of the laptops of this model in the organization. Several other tablets connect on channel 48 and channel
52 in the same work areas. What is the likely problem?
  • A. The client drivers are faulty and should be upgraded.
  • B. The clients are configured to use WPA and 5 GHz channels only support WPA2.
  • C. The access points are configured to disallow 5 GHz.
  • D. The antennas in the laptop have insufficient gain to detect the 5 GHz signals.
Answer: A
Explanation:
The client drivers are faulty and should be upgraded is the likely problem for the laptop that can see and connect to 2.4 GHz APs, but does not even see 5 GHz APs. The client drivers are the software components that enable the wireless adapter of the laptop to communicate with the operating system and the network. The client drivers are responsible for scanning the available wireless channels, detecting and connecting to the access points, negotiating the security and data rate parameters, and transmitting and receiving data frames. If the client drivers are faulty, outdated, or incompatible, they may cause various issues with the wireless performance and functionality, such as low data rates, poor signal strength, frequent disconnections, or inability to see or connect to certain access points or channels.
One of the possible causes of faulty client drivers is that they do not support or recognize some of the features or standards of the 802.11ac technology, such as wider channel bandwidths, higher modulation schemes, or DFS (Dynamic Frequency Selection) channels. This could explain why the laptop can see and connect to 2.4 GHz APs, but not 5 GHz APs, as 802.11ac operates only in the 5 GHz band and uses channels that are wider (up to 160 MHz) and higher (up to channel 165) than those used by previous standards. Moreover, some of the
5 GHz channels are subject to DFS rules, which require the access points and client stations to monitor and avoid using channels that are occupied by radar systems or other primary users. If the client drivers do not support or comply with DFS rules, they may not be able to see or connect to access points that use DFS channels.
To solve this problem, the client drivers should be upgraded to the latest version that supports and is compatible with 802.11ac features and standards. This can be done by downloading and installing the updated driver software from the manufacturer's website or using a device manager tool. Upgrading the client drivers may also improve other aspects of wireless performance and functionality, such as data rates, signal strength, security, and stability. References: 1, Chapter 12, page 493; 2, Section 8.1

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. A single AP supports multiple BSSs with different SSIDs.
  • B. Multiple APs have been loaded with the same configuration from an image file.
  • C. An SCA network is in use.
  • D. An IBSS is used instead of a BSS.
Answer: D
Explanation:
An IBSS is used instead of a BSS is a network configuration that would result in multiple stations broadcasting Beacon frames with the same BSSID but with different source addresses. An IBSS (Independent Basic Service Set) is a type of WLAN that does not use an AP but rather allows stations to communicate directly with each other in a peer-to-peer manner. An IBSS is also known as an ad-hoc network or a peer-to-peer network. In an IBSS, each station generates its own Beacon frames to announce its presence and capabilities to other stations within range. The Beacon frames have the same BSSID, which is randomly generated by one of the stations when creating the IBSS, but they have different source addresses, which are the MAC addresses of each station's radio interface. The BSSID is used to identify the IBSS and prevent stations from joining other IBSSs with different BSSIDs. References: , Chapter 1, page 25; , Section 1.1

NEW QUESTION # 77
You have implemented an 802.11ax WLAN for a customer. All APs are four stream HE APs. The customer states that it is essential that most of the clients can use the OFDMA modulation scheme. What do you tell the customer?
  • A. If the devices support 802.11ac, they can be updated to support OFDMA through driver upgrades
  • B. OFDMA is an optional feature of 802.11ax and most APs don't even support it
  • C. The clients that must support OFDMA must also be upgraded to 802.11ax
  • D. All 5 GHz PHYs use OFDM modulation, so you will achieve OFDMA everywhere in 5 GHz
Answer: C
Explanation:
OFDMA is a new modulation scheme introduced in 802.11ax that allows multiple users to share the same channel by dividing it into smaller subchannels called resource units (RUs). This improves the efficiency and capacity of the WLAN by reducing contention and overhead. However, to use OFDMA, both the AP and the client must support 802.11ax and negotiate the parameters of the subchannel allocation. Therefore, the customer needs to upgrade the clients that require OFDMA to 802.11ax devices12.
The other options are not correct because they do not reflect the reality of OFDMA. Option B is incorrect because OFDMA is a mandatory feature of 802.11ax for both downlink and uplink transmissions, and all
802.11ax APs must support it1. Option C is incorrect because OFDM and OFDMA are different modulation schemes, and OFDM does not allow multiple users to share the same channel. Option D is incorrect because
802.11ac devices cannot support OFDMA through driver upgrades, as they lack the hardware and firmware capabilities to do so2.
References: 1:CWNA-109Official Study Guide, page 144 2: OFDMA

NEW QUESTION # 78
You are attempting to locate the cause of a performance problem in two WLAN cells in a mostly overlapping coverage area. You note that one AP is on channel 1 and the other is on channel 2. When you document your findings, what term do you use to describe the problem in this configuration?
  • A. CCI
  • B. Non-Wi-Fi interference
  • C. ACI
  • D. CCC
Answer: A

NEW QUESTION # 79
An 802.11 WLAN transmitter that emits a 50 mW signal is connected to a cable with 3 dB of loss. The cable is connected to an antenna with 16 dBi of gain. What is the power level at the Intentional Radiator?
  • A. 1000 mW
  • B. 25 mW
  • C. 250 mW
  • D. 500 mW
Answer: A

NEW QUESTION # 80
......
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