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CWNP CWNA-109 Exam Overview:

Certification Vendor:CWNP
Exam Name:CWNP Certified Wireless Network Administrator (CWNA)
Exam Number:CWNA-109
Real Exam Qty:60
Exam Duration:90 minutes
Passing Score:70%
Exam Format:Multiple Select, Drag-and-Drop, Multiple Choice
Related Certifications:Certified Wireless Network Administrator (CWNA)
Exam Price:USD 250
Available Languages:English
Certificate Validity Period:3 years
Sample Questions:CWNP CWNA-109 Sample Questions
Exam Way:Online (Proctored) or Authorized Testing Center
Pre Condition:No formal prerequisites, but foundational networking knowledge recommended
Official Syllabus URL:https://www.cwnp.com/certifications/cwna/

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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
  • RF Validation and WLAN remediation: This topic covers RF interference, WLAN performance, the basic features of validation tools, and common wireless issues.
Topic 3
  • 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 4
  • 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.

CWNP Wireless Network Administrator (CWNA) Sample Questions (Q34-Q39):

NEW QUESTION # 34
A wireless engineer wants to enable both legacy 802.11b clients and modern 802.11ax clients to associate with the same 2.4 GHz SSID. What is a drawback of enabling this level of backward compatibility?

Answer: D

Explanation:
When a BSS supports both legacy 802.11b clients and newer high-throughput clients like
802.11ax, protection mechanisms such as RTS/CTS or CTS-to-Self must be used to prevent collisions between devices using different modulation schemes that cannot always detect each other's transmissions. These protection mechanisms consume additional airtime and overhead, reducing the overall throughput and efficiency available to all clients in the BSS, including the newer, faster devices. For this reason, many administrators choose to disable 802.11b data rates entirely on modern networks.


NEW QUESTION # 35
Which regulatory domain organization is responsible for defining RF power and channel regulations for WLAN devices operating in the United States?

Answer: C

Explanation:
The Federal Communications Commission (FCC) is the regulatory body responsible for governing the use of RF spectrum in the United States, including the unlicensed ISM and U-NII bands used by WLAN devices. The FCC establishes rules regarding maximum transmit power, permissible channels, and technical requirements that WLAN equipment manufacturers must follow. Other countries and regions have their own regulatory bodies, such as ETSI in Europe, which may impose different power and channel restrictions.


NEW QUESTION # 36
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?

Answer: C

Explanation:
Implementing Fast BSS Transition (FT) for roaming 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. FT is a feature that allows a client station to quickly switch from one AP to another within the same ESS (Extended Service Set) without having to re-authenticate and re-associate with each AP. This reduces the latency and packet loss that may occur during roaming, thus improving the user experience and maintaining the application layer throughput. FT is defined in the IEEE 802.11r amendment and is also known as Fast Roaming or Fast Secure Roaming. References: , Chapter 9, page 367; , Section 6.3


NEW QUESTION # 37
You are implementing a multi-AP WLAN and fast secure roaming is essential. Which one of the following methods is an IEEE 802.11 standard method for fast roaming?

Answer: A

Explanation:
FT (Fast Transition) is an IEEE 802.11 standard method for fast roaming. FT is defined in the IEEE 802.11r amendment and is also known as Fast BSS Transition (FBT) or Fast Secure Roaming. FT is a feature that allows a client station to quickly switch from one AP to another within the same ESS (Extended Service Set) without having to re-authenticate and re-associate with each AP. This reduces the latency and packet loss that may occur during roaming, thus improving the user experience and maintaining the security of the connection. FT works by using pre-authentication and key caching mechanisms that allow the client station and the APs to exchange security information before the actual roaming occurs. This way, when the client station decides to roam to a new AP, it can use a fast reassociation request and response that contain only a few fields, instead of a full authentication and association exchange that require more time and data. References: 1, Chapter 9, page 367; 2, Section 6.3


NEW QUESTION # 38
What statement about the IEEE 802.11-2016 QoS facility is true?

Answer: A

Explanation:
802.11 QoS is achieved by giving high priority queues a statistical advantage at winning contention. 802.11 QoS is based on the Enhanced Distributed Channel Access (EDCA) mechanism, which defines four access categories (ACs) for different types of traffic: Voice, Video, Best Effort, and Background. Each AC has its own transmit queue and contention parameters, such as Arbitration Interframe Space (AIFS), Contention Window (CW), and Transmission Opportunity (TXOP). These parameters determine how long a station has to wait before transmitting a frame and how long it can occupy the channel. Higher priority ACs have shorter AIFS, smaller CW, and longer TXOP, which means they have more chances to access the channel and send more data than lower priority ACs. However, this does not guarantee that higher priority ACs will always win the contention, as there is still a random backoff process involved. Therefore, 802.11 QoS is a statistical service that provides different levels of service quality based on traffic categories. References: , Chapter 10, page 403; , Section 6.1


NEW QUESTION # 39
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