CWNA-108 Dumps - Kickstart your Career with Real Updated Questions
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CWNP CWNA-108 is a certification exam that is designed to test the skills and knowledge of individuals who want to become certified wireless network administrators. CWNA-108 exam is conducted by the Certified Wireless Network Professional (CWNP), which is a vendor-neutral organization that offers a range of certifications related to wireless networking.
Preparation Materials for CWNA-108 Exam
The candidates will have higher chances to pass CWNA-108 exam from the first attempt if they use different types of preparation materials, such as:
- CWNA-108 Practice Test
The official CWNA-108 practice test can be bought from the CWNP Store. It is available at a fee of $124.99 and includes practice questions that follow the exam structure. Therefore, the candidates will understand how difficult the final test will be and whether or not they should focus on certain topics more. Also, it includes two pools which contain 60 questions each. And once the candidate pays for this material, he/she will have unlimited access to it. Besides, each practice question contains detailed explanations and helps the exam-takers understand where they did wrong and find the logic behind those questions. Finally, this material is compatible with the most popular browsers such as Safari, Internet Explorer 9.0 or higher, Chrome, or Firefox.
- Certified Wireless Network Administrator – CWNA Training Delivered by NetCert-Expert
NC-Expert is one of the approved CWNP partners that offer training classes for specialists who want to pass CWNA-108 exam. This class follows all the topics tested in the official exam. Therefore, the candidates will understand their preparedness status and clarify any questions they might have on the most difficult subjects. When it comes to the prerequisites, the vendor mentions that the exam-takers should have basic networking knowledge. Also, they should understand how the OSI model works. Besides, the candidates should demonstrate that they have experience in IP subnetting. Overall, this class has 13 modules. It debuts with helping the attendees learn about networking industry organizations and WLAN. Then, it continues with teaching examinees about RF behavior and characteristics, as well as its measurements and mathematics. The next modules include information about RF hardware and antennas. Further on, the attendees will also learn about 802.11 network types and PHYs together with related network devices and will as well focus on 802.11 MAC operations and channel access methods. What’s more, they will be offered information about WLAN network architectures, requirements, and solutions. The final modules will help the candidates learn about security solutions for WLAN, site surveys, validation, and network design. Besides, the attendees will discover the best techniques for WLAN troubleshooting.
- 802.11ac: Survival Guide: Wi-Fi at Gigabit and Beyond by Matthew S. Gast
This book is available on Amazon and it is recommended for applicants as an additional training resource. The readers can download it in Kindle format for $10.49 or buy it as a paperback at prices between $7.82 to $13.79. As CWNA-108 exam focuses on 802.11ac, this book is an excellent resource to help candidates understand how to manage 802.11ac protocol so that they will improve the wireless capacity and speed of LANs. Applicants will also explore more about how to use beamforming to improve the speed capacity by combining it with link margin and discover how the multi-user MIMO increases the capacity if they manage to enable an AP for sending the necessary data to different clients at the same time. Finally, another chapter included in this book focuses on planning how and when to perform a network upgrade and take it to 802.11ac level by assessing the client’s applications, devices, and network connections.
- CWNA-108 Official Study Guide
This material can be found in the CWNP official Store. The candidates will need to pay a price of $74.99 to obtain it. It helps the candidates prepare to become Certified Network Wireless Administrators by offering them hands-on exercises and putting them in real-world scenarios. Also, it is a comprehensive resource for the candidates as it offers them complete information to reinforce their critical skills. Therefore, they will understand better how to handle RF components and fundamentals, as well as managing wireless LAN access and topologies, attacks, intrusion monitoring, or troubleshooting. In addition, by being exposed to real-world scenarios, the candidates will learn how the theoretical information can be applied in a real job.
NEW QUESTION # 63
What statement describes the authorization component of a AAA implementation?
- A. Validating client device credentials against a database.
- B. Implementing a WIPS as a full-time monitoring solution to enforce policies.
- C. Granting access to specific network services or resources according to a user profile.
- D. Verifying that a user is who he says he is.
Answer: C
Explanation:
Explanation
Granting access to specific network services or resources according to a user profile describes the authorization component of a AAA implementation. AAA stands for Authentication, Authorization, and Accounting, which are three functions that are used to control and monitor access to network resources and services. Authentication is the process of verifying that a user is who he says he is, by using credentials such as username, password, certificate, token, or biometric data. Authorization is the process of granting access to specific network services or resources according to a user profile, which defines the user's role, privileges, and permissions. Accounting is the process of recording and reporting the usage of network services or resources by a user, such as the duration, volume, type, and location of the access. AAA can be implemented by using different protocols and servers, such as RADIUS, TACACS+, LDAP, Kerberos, or Active Directory. References: 1, Chapter 11, page 449; 2, Section 7.1
NEW QUESTION # 64
In an 802.11n 2.4 GHz BSS, what prevents each station from using the full network data rate (e.g. 216.7 Mbps) for user data when multiple clients are actively exchanging data with the AP?
- A. Radio receiver hardware cannot process data is quickly as it can be transmitted
- B. All data frames must be acknowledged and the medium is shared
- C. Half of the bandwidth is allocated to uplink traffic and half to downlink traffic
- D. APs do not have sufficient wired connection speeds to the LAN, even at 1 Gbps connections, with
802.11n and earlier APs
Answer: B
NEW QUESTION # 65
In which plane of the three networking planes is an access point configured by a WLAN controlled?
- A. Control
- B. Security
- C. Data
- D. Management
Answer: D
NEW QUESTION # 66
XYZ Company has decided to install an 802.11 WLAN system that will support 1000 wireless users, but they are concerned about network security. XYZ is interested in deploying standardized security features. In addition to WPA2-Enterprise with PEAP and role-based access control, XYZ would like to support management frame protection as well as a fast secure roaming protocol for future mobile handsets.
As XYZ Company selects a product to deploy, what two IEEE amendments, which are included in
802.11- 2016, should be supported to provide the management frame protection and fast secure roaming security features?
- A. 802.11z and 802.11w
- B. 802.11j and 802.11k
- C. 802.11r and 802.11k
- D. 802.11r and 802.11w
Answer: D
NEW QUESTION # 67
A client STA must choose the best AP for connectivity. As part of the evaluation, it must verify compatible data rates. What can the client STA use to verify that an AP supports the same data rates that it supports?
- A. Beacon frames transmitted by the AP
- B. Data frames sent between the AP and current client STAs
- C. Authentication frames transmitted by the other client STAs
- D. Probe request frames transmitted by other client STAs
Answer: D
Explanation:
https://supportforums.cisco.com/t5/wireless-mobility-documents/802-11-sniffer-capture-analysis- management-frames-and-open-auth/ta-p/3120622
NEW QUESTION # 68
To ease user complexity, your company has implemented a single SSID for all employees. However, the network administrator needs a way to control the network resources that can be accessed by each employee based in their department.
What WLAN feature would allow the network administrator to accomplish this task?
- A. WPA2
- B. WIPS
- C. RBAC
- D. SNMP
Answer: C
Explanation:
Explanation
The WLAN feature that would allow the network administrator to control the network resources that can be accessed by each employee based on their department is Role-Based Access Control (RBAC). RBAC is a method of assigning different permissions and policies to users or groups based on their roles in the organization. RBAC can be implemented by using VLANs, ACLs, or firewalls to restrict access to certain network segments or resources. RBAC can also be integrated with 802.1X/EAP authentication to dynamically assign roles and VLANs to users based on their credentials. References: [CWNP Certified Wireless Network Administrator Official Study Guide: Exam CWNA-107], page 403; [Role-Based Access Control (RBAC) in Wireless Networks], page 1.
NEW QUESTION # 69
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?
- A. USB 3 devices in the user's work area
- B. Excess RF energy from a nearby AP
- C. Bluetooth devices in the user's work area
- D. Unintentional radiation from the PC power supply
Answer: A
Explanation:
Explanation
USB 3 devices in the user's work area are the most likely cause of this interference when using a spectrum analyzer to look for non-Wi-Fi interference sources. A spectrum analyzer is a tool that measures and visualizes the radio frequency activity and interference in the wireless environment. A spectrum analyzer can show the spectrum usage and energy levels on each frequency band or channel and help identify and locate the sources of interference. Interference is any unwanted signal that disrupts or degrades the intended signal on a wireless channel. Interference can be caused by various sources, such as other Wi-Fi devices, non-Wi-Fi devices, or natural phenomena. Interference can affect WLAN performance and quality by causing signal loss, noise, distortion, or errors. USB 3 devices are non-Wi-Fi devices that use USB 3.0 technology to transfer data at high speeds between computers and peripherals, such as hard drives, flash drives, cameras, or printers. USB 3 devices can generate electromagnetic radiation that interferes with Wi-Fi signals in the 2.4 GHz band, especially when they are close to Wi-Fi devices or antennas. USB 3 devices can cause significant interference across the entire 2.4 GHz band (not on a few select frequencies) within the desktop area of a user's workspace, but the interference disappears quickly after just 2 meters. This is because USB 3 devices emit broadband interference that affects all channels in the 2.4 GHz band with a high intensity near the source but a low intensity at a distance due to attenuation. The other options are not likely to cause this interference pattern when using a spectrum analyzer to look for non-Wi-Fi interference sources. Bluetooth devices in the user's work area are non-Wi-Fi devices that use Bluetooth technology to communicate wirelessly between computers and peripherals, such as keyboards, mice, headphones, or speakers. Bluetooth devices can cause interference with Wi-Fi signals in the 2.4 GHz band, but they use frequency hopping spread spectrum (FHSS) technique that changes frequencies rapidly and randomly within a range of 79 channels. Therefore, Bluetooth devices do not cause significant interference across the entire 2.4 GHz band (not on a few select frequencies), but rather intermittent interference on some channels at different times. Excess RF energy from a nearby AP is not a non-Wi-Fi interference source but rather a Wi-Fi interference source that occurs when an AP transmits more power than necessary for its coverage area. Excess RF energy from a nearby AP can cause co-channel interference (CCI) with other APs or client devices that use the same channel within range of each other. CCI reduces performance and capacity because it causes contention and collisions on the wireless medium,
NEW QUESTION # 70
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 access points are configured to disallow 5 GHz.
- B. The antennas in the laptop have insufficient gain to detect the 5 GHz signals.
- C. The clients are configured to use WPA and 5 GHz channels only support WPA2.
- D. The client drivers are faulty and should be upgraded.
Answer: B
Explanation:
Explanation/Reference:
NEW QUESTION # 71
What statement about 802.11 WLAN performance is true?
- A. To get the best performance out of an AP, you should disable data rates of 72 Mbps and lower
- B. In modem networks, both centralized and distributed data forwarding work well for most standard office deployments
- C. WLANs perform better as more wireless clients connect with each AP
- D. In most WLANs, no special skill or tuning is required to get peak performance
Answer: B
Explanation:
Explanation
The statement that in modern networks, both centralized and distributed data forwarding work well for most standard office deployments is true about WLAN performance. Data forwarding refers to how wireless frames are transmitted from wireless clients to wired networks or vice versa through wireless access points (APs).
Centralized data forwarding means that all wireless frames are sent to a central controller or gateway before being forwarded to their destinations. Distributed data forwarding means that wireless frames are forwarded directly by the APs to their destinations without going through a central controller or gateway. Both methods have their advantages and disadvantages, depending on the network size, topology, traffic pattern, security, and management requirements. However, in modern networks, both methods can achieve high performance and scalability for most standard office deployments, as they can leverage advanced features such as fast roaming, load balancing, quality of service, and encryption. The other statements about WLAN performance are false. In most WLANs, special skill or tuning is required to get peak performance, such as selecting the appropriate channel, power, data rate, and antenna settings. WLANs perform worse as more wireless clients connect with each AP, as they cause more contention and interference on the wireless medium. To get the best performance out of an AP, you should not disable data rates of 72 Mbps and lower, as they are needed for backward compatibility and range extension. References: CWNA-109 Study Guide, Chapter 9: Wireless LAN Architecture, page 2811
NEW QUESTION # 72
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 as the 802.1X Authenticator?
- A. The Ethernet switch
- B. All non-root bridges
- C. The root bridge
- D. The RADIUS server
Answer: A
NEW QUESTION # 73
A non-802.11 device is suspected of causing interference on the WLAN. You are not certain of the location or type of device. What is the best solution for locating this non-802.11 device?
- A. Laptop-based spectrum analyzer with a directional antenna
- B. Laptop-based spectrum analyzer with an omni-directional antenna
- C. Access point spectrum analyzer
- D. Laptop-based spectrum analyzer with an omni-directional antenna
Answer: A
NEW QUESTION # 74
When an ACK frame is not received by the transmitting STA, what is assumed?
- A. The receiver is offline
- B. The frame was not delivered and must be retransmitted
- C. The receiver processed the frame, but did not respond with an ACK frame because 802.11w is enabled
- D. The frame was correctly delivered
Answer: B
NEW QUESTION # 75
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. Overlay WLAN monitoring solution
- B. laptop-based protocol analyzers
- C. AP-based spectrum analysis
- D. Laptop based spectrum analyzers
Answer: C
NEW QUESTION # 76
When an ACK frame is not received by the transmitting STA, what is assumed?
- A. The receiver is offline
- B. The frame was not delivered and must be retransmitted
- C. The receiver processed the frame, but did not respond with an ACK frame because 802.11w is enabled
- D. The frame was correctly delivered
Answer: B
Explanation:
Explanation
An ACK (Acknowledgement) frame is a short control frame that is sent by the receiver of a data or management frame to confirm that the frame was received correctly. The ACK frame is sent after a SIFS (Short Interframe Space) interval, which is the shortest time gap between frames in 802.11. If the transmitter does not receive an ACK frame within a specified time, it assumes that the frame was not delivered and must be retransmitted. This is part of the 802.11 reliability mechanism that ensures reliable data delivery over an unreliable wireless medium . References: [CWNA-109 Study Guide], Chapter 5: IEEE 802.11 Medium Access, page 209; [CWNA-108 Study Guide], Chapter 5: IEEE 802.11 Medium Access, page 203.
NEW QUESTION # 77
Return Loss is the decrease of forward energy in a system when some of the power is being reflected back toward the transmitter. What will cause high return loss in an RF transmission system, including the radio, cables, connectors and antenna?
- A. A Voltage Standing Wave Ratio (VSWR) of 1:1
- B. The use of 50 ohm cables longer than one meter in the RF system
- C. A significant impedance mismatch between components in the RF system
- D. High output power at the transmitter and use of a low-gain antenna
Answer: C
Explanation:
Explanation
Return loss is a measure of how well the components of an RF system are matched in terms of their impedance. Impedance is the opposition to the flow of alternating current in a circuit, and it depends on the frequency, resistance, capacitance, and inductance of the components. When the impedance of the source, the transmission line, and the load are not equal, some of the power is reflected back to the source, causing a loss of forward power. This loss is expressed in decibels (dB) as return loss. The higher the return loss, the lower the reflection and the better the impedance matching. Conversely, the lower the return loss, the higher the reflection and the worse the impedance matching.
VSWR (Voltage Standing Wave Ratio) is another way of expressing the same concept. It is the ratio of the maximum voltage to the minimum voltage along a transmission line due to the interference of the incident and reflected waves. A VSWR of 1:1 means that there is no reflection and perfect impedance matching. A VSWR higher than 1:1 means that there is some reflection and impedance mismatch. The higher the VSWR, the higher the reflection and the lower the return loss.
Therefore, a significant impedance mismatch between components in an RF system will cause high reflection, high VSWR, and low return loss.
NEW QUESTION # 78
You are implementing a VHT-capable AP. Which one of the following channels is available in the
802.11-2016 standard, which was not available before the ratification of 802.11ac?
- A. 0
- B. 1
- C. 2
- D. 3
Answer: A
NEW QUESTION # 79
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CWNP Certified Wireless Network Administrator (CWNA-108) is a certification that validates the skills and knowledge of professionals in the wireless networking industry. CWNA-108 exam is an entry-level certification that covers basic wireless networking concepts and principles, including radio frequency (RF) technologies, wireless LAN (WLAN) hardware, software, and security protocols. CWNP Certified Wireless Network Administrator Exam certification is designed to help professionals advance their careers in the wireless networking industry and demonstrate their expertise in deploying and managing wireless networks.
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