CWNA-109 Valid Practice Questions | CWNA-109 Valid Dumps Sheet

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CWNP CWNA-109 Exam Syllabus Topics:

TopicDetails
Topic 1
  • 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 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
  • 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.
Topic 4
  • WLAN Protocols and Devices: It focuses on terminology related to the 802.11 MAC and PHY, the purpose of the three main 802.11 frame types, MAC frame format, and 802.11 channel access methods.

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CWNP Wireless Network Administrator (CWNA) Sample Questions (Q149-Q154):

NEW QUESTION # 149
A string of characters and digits is entered into an AP and a client STA for WPA2 security. The string is 8 characters long. What is this string called?

Answer: D

Explanation:
The string of characters and digits that is entered into an AP and a client STA for WPA2 security and is 8 characters long is called a passphrase. A passphrase is a human-readable text that is used to generate a Pre- Shared Key (PSK) for WPA2-Personal security. A passphrase can be between 8 and 63 characters long and can include any ASCII character. The PSK is a 256-bit key that is derived from the passphrase using a hashing algorithm called PBKDF2. The PSK is used to encrypt and decrypt the data frames between the AP and the client STA. A MSK is a Master Session Key that is generated by an authentication server for WPA2- Enterprise security. A WEP key is a 40-bit or 104-bit key that is used for Wired Equivalent Privacy (WEP) security, which is deprecated and insecure. A PSK is not a string of characters and digits, but a binary key. References: [CWNP Certified Wireless Network Administrator Official Study Guide: Exam CWNA-
109], page 303; [CWNA: Certified Wireless Network Administrator Official Study Guide: Exam CWNA-
109], page 293.


NEW QUESTION # 150
What statement about the beamwidth of an RF antenna is true?

Answer: C

Explanation:
The beamwidth of an RF antenna is the angular measure of how wide the main lobe of radiation is. The main lobe is the area where the signal strength is highest and most concentrated. The beamwidth is calculated at the points where the main lobe decreases power by 3 dB, which means it is half of the maximum power. The beamwidth can be measured in both horizontal and vertical planes, depending on how the antenna is oriented. The horizontal beamwidth is also called azimuth, while the vertical beamwidth is also called elevation. The beamwidth patterns on an antenna polar chart indicate how the RF energy is distributed in different directions.


NEW QUESTION # 151
An IEEE 802.11 amendment is in the daft state. What impact does this draft amendment have on the 802.11 standard?

Answer: C

Explanation:
An IEEE 802.11 amendment is a proposed change or addition to the existing 802.11 standard, which defines the specifications and protocols for wireless LANs. An amendment goes through several stages of development, such as draft, sponsor ballot, and final approval, before it is ratified by the IEEE Standards Association and becomes part of the standard. Until then, it has no official impact on the standard, although some vendors may release products based on draft amendments to gain a competitive edge or to influence the final outcome of the amendment .


NEW QUESTION # 152
What cipher suite is specified by the 802.11-2016 standard and is not deprecated?

Answer: C

Explanation:
The cipher suite specified by the 802.11-2016 standard and is not deprecated is Counter Mode with CBC-MAC Protocol (CCMP). CCMP is an encryption protocol that uses Advanced Encryption Standard (AES) as the underlying cipher and provides confidentiality, integrity, and origin authentication for wireless data. CCMP is the mandatory encryption protocol for WPA2 and WPA3.


NEW QUESTION # 153
What type of site survey is conducted using AP simulation, such as placing a single AP and adjusting its position or power to model expected coverage, often performed before a live WLAN is deployed?

Answer: A

Explanation:
A predictive site survey uses software to model expected RF coverage based on a facility's floor plan, building materials, and estimated AP placement, without requiring physical access to the site or a live WLAN. This is often done during the initial design phase to estimate the number and placement of APs needed. It is typically followed by an active or passive survey after installation to validate real-world coverage and make any necessary adjustments, since predictive models cannot perfectly account for all real-world RF behaviors.


NEW QUESTION # 154
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