Latest Oct-2023 CWNA-108 Dumps PDF And Certification Training
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NEW QUESTION # 72
What primary metric of scanning can stations use to select the best AP for connectivity to the desired BSS?
- A. PING latency when testing against an Internet server.
- B. Signal strength of AP beacons received.
- C. FCS errors in frames transmitted to and from the AP.
- D. Throughput speed in Mbps.
Answer: B
Explanation:
Explanation
When a station scans for available wireless networks, it listens for beacon frames sent by APs. A beacon frame contains information about the BSS, such as SSID, supported rates, channel, security, etc. The station also measures the signal strength of the beacon frames, which indicates how well the station can communicate with the AP. The signal strength is usually expressed in dBm or RSSI units. The higher the signal strength, the better the connection quality and performance. Therefore, the station can use the signal strength of AP beacons as the primary metric to select the best AP for connectivity to the desired BSS12. References: CWNA-109 Study Guide, Chapter 6: Wireless LAN Devices and Topologies, page 249; CWNA-108 Study Guide, Chapter
6: Wireless LAN Devices and Topologies, page 243.
NEW QUESTION # 73
What wireless networking term describes the increase of RF energy in an intentional direction with the use of an antenna?
- A. Directed Radiation
- B. Passive Gain
- C. Active Amplification
- D. Beam Digression
Answer: B
Explanation:
Explanation
Passive Gain is the increase of RF energy in an intentional direction with the use of an antenna. It is achieved by focusing the same amount of power into a smaller area, resulting in a higher power density and a stronger signal. Passive Gain does not require any additional power or amplification, but rather depends on the antenna's physical characteristics, such as size, shape, and orientation. Passive Gain is also expressed in decibels (dB) and is related to the antenna's beamwidth and directivity. References: 1, Chapter 2, page 63; 2, Section 2.3
NEW QUESTION # 74
When replacing the antenna of a WLAN device with a similar antenna type that has a higher passive gain, what antenna characteristic will decrease?
- A. Receive sensitivity
- B. Range
- C. Active gain
- D. Beamwidth
Answer: D
NEW QUESTION # 75
You are implementing a VHT-capable AP. Which one of the following channels is available in the
802.11ac amendment to the 802.11-2012 standard, which was not available in the standard before this amendment?
- A. 0
- B. 1
- C. 2
- D. 3
- E. 4
Answer: B
NEW QUESTION # 76
What is an advantage of using WPA3-Personal instead of WPA2-Personal as a security solution for 802.11 networks?
- A. WPA3-Personal, also called WPA3-SAE, uses an authentication exchange and WPA2-Personal does not
- B. WPA3-Personal, also called WPA3-SAE, uses AES for encryption and WPA2-Personal does not
- C. WPA3-Personal, also called WPA3-SAE, uses a stronger authentication exchange to better secure the network
- D. WPA3-Personal, also called WPA3-SAE, uses a better encryption algorithm than WPA2-Personal
Answer: C
Explanation:
Explanation
An advantage of using WPA3-Personal instead of WPA2-Personal as a security solution for 802.11 networks is that WPA3-Personal, also called WPA3-SAE, uses a stronger authentication exchange to better secure the network. WPA3-Personal uses Simultaneous Authentication of Equals (SAE) as the key exchange protocol, which provides stronger protection against offline dictionary attacks and password guessing than WPA2-Personal. SAE uses a Diffie-Hellman key exchange with elliptic curve cryptography (ECC) to establish a pairwise master key (PMK) between the AP and the client without revealing it to any eavesdropper. SAE also provides forward secrecy, which means that if one PMK is compromised, it does not affect the security of other PMKs. WPA2-Personal uses Pre-Shared Key (PSK) as the key exchange protocol, which is vulnerable to offline brute-force attacks if the passphrase is weak or leaked. Both WPA3-Personal and WPA2-Personal use AES for encryption, so there is no difference in that aspect. WPA3-Personal does not use a different encryption algorithm than WPA2-Personal, but rather a different key exchange protocol. References: [CWNP Certified Wireless Network Administrator Official Study Guide: Exam CWNA-107], page 307; [CWNA:
Certified Wireless Network Administrator Official Study Guide: Exam CWNA-106], page 297.
NEW QUESTION # 77
You have been tasked with creating a wireless link between two buildings on a single campus. The link must support at least 150 Mbps data rates. What kind of WLAN technology role should you deploy?
- A. Access BSS
- B. WPAN
- C. Wireless bridging
- D. IBSS
Answer: C
Explanation:
Explanation
https://www.wlanmall.com/what-is-a-wireless-bridge/
Wireless bridging is a WLAN technology role that allows two or more networks to be connected wirelessly over a distance. A wireless bridge consists of two or more APs that are configured to operate in bridge mode and use directional antennas to establish a point-to-point or point-to-multipoint link. Wireless bridging can support high data rates and is suitable for scenarios where running cables is impractical or expensive. To create a wireless link between two buildings on a single campus that supports at least 150 Mbps data rates, wireless bridging is an appropriate solution678. References: CWNA-109 Study Guide, Chapter 6: Wireless LAN Devices and Topologies, page 271; CWNA-108 Study Guide, Chapter 6: Wireless LAN Devices and Topologies, page 265; Wi-Fi Wireless Bridging Explained.
NEW QUESTION # 78
What is always required to establish a high quality 2.4 GHz RF link at a distance of 3 miles (5 kilometers)?
- A. Grid antennas at each endpoint
- B. Accurate Earth Bulge calculations
- C. A Fresnel Zone that is at least 60% clear of obstructions
- D. Minimum output power level of 2 W
- E. A minimum antenna gain of 11 dBi at both endpoints
Answer: C
NEW QUESTION # 79
What statements about the beamwidth of an RF antenna are true?
- A. Horizontal and vertical beamwidth are calculated at the points in which the main lobe decreases power by 3 dB
- B. Vertical beamwidth is displayed (in degree) on the antenna's Azimuth chart.
- C. When antenna gain is lower, the beamwidth is also lower in both the horizontal and vertical dimensions.
- D. The beamwidth patterns on an antenna polar chart indicate the point at which the RF signal stops propagating.
Answer: A
NEW QUESTION # 80
The BSA of an AP covers the area used by the sales and marketing department. Thirty-five stations operate in this space. The users indicate that they need more throughput and all stations are 5 GHz capable 802.11ac clients. The current AP configuration uses 20 MHz channels in both 2.4 GHz and 5 GHz. What is the least expensive solution available for increasing throughput for these users without implementing configuration options that are not recommended?
- A. Use a 40 MHz channel on the 2.4 GHz radio
- B. Use a 160 MHz channel on the 5 GHz radio
- C. Use a 40 MHz channel on the 5 GHz radio
- D. Install a second AP in the coverage area
Answer: C
Explanation:
Explanation
The least expensive solution available for increasing throughput for these users without implementing configuration options that are not recommended is to use a 40 MHz channel on the 5 GHz radio. This solution can double the channel bandwidth and increase the data rates for the 5 GHz capable 802.11ac clients. Using a
40 MHz channel on the 5 GHz radio is also less likely to cause co-channel interference or overlap with other channels than using a 40 MHz channel on the 2.4 GHz radio, which has only three non-overlapping channels.
Using a 160 MHz channel on the 5 GHz radio may provide even higher throughput, but it may also consume too much of the available spectrum and cause more interference with other devices or networks. Installing a second AP in the coverage area may also improve the throughput, but it may require additional costs and configuration. References: [CWNP Certified Wireless Network Administrator Official Study Guide: Exam CWNA-107], page 216; [CWNA: Certified Wireless Network Administrator Official Study Guide: Exam CWNA-106], page 206.
NEW QUESTION # 81
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. Probe request frames transmitted by other client STAs
- B. Beacon frames transmitted by the AP
- C. Data frames sent between the AP and current client STAs
- D. Authentication frames transmitted by the other client STAs
Answer: A
Explanation:
https://supportforums.cisco.com/t5/wireless-mobility-documents/802-11-sniffer-capture-analysis- management-frames-and-open-auth/ta-p/3120622
NEW QUESTION # 82
What statement about 802.3. Clause 33 Power over Ethernet is true?
- A. When using CAT5 cabling, you increase the maximum draw available to the PD over that available with CAT6.
- B. Only endpoint PSEs are supported.
- C. Only midspan PSEs are supported.
- D. The lowest voltage drop is achieved when using CAT6 cable instead of CAT5 or CAT5e.
Answer: A
NEW QUESTION # 83
Lynne runs a small hotel, and as a value added service for her customers she has implemented a Wi-Fi hot-spot. Lynne has read news articles about how hackers wait at hot- spots trying to take advantage of unsuspecting users. She wants to avoid this problem at her hotel.
What is an efficient and practical step that Lynne can take to decrease the likelihood of active attacks on her customers' wireless computers?
- A. Implement an SSL VPN in the WLAN controller that initiates after HTTPS login.
- B. Enable station-to-station traffic blocking by the access points in the hotel.
- C. Require EAP-FAST authentication and provide customers with a username/password on their receipt.
- D. Implement Network Access Control (NAC) and require antivirus and firewall software along with OS patches.
Answer: C
NEW QUESTION # 84
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?
- A. PSK
- B. WEP key
- C. MSK
- D. Passphrase
Answer: D
Explanation:
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-107], page 303; [CWNA: Certified Wireless Network Administrator Official Study Guide: Exam CWNA-106], page 293.
NEW QUESTION # 85
ABC Company has thousands of Wi-Fi users accessing their network on a daily basis. Their WLAN consists of 700 access points, 6 WLAN controllers, and a wireless network management system.
What network functions are performed by the enterprise-class WNMS?
- A. Radio management, fast roaming, key caching, and other centralized control plane operations
- B. Centralized bridging of guest data traffic and application of firewall and QoS policies to data
- C. Generating, encrypting, and decrypting 802.11 frames and collecting RF radio data.
- D. Management of WLAN controller configuration and provisioning of firmware updates
Answer: D
NEW QUESTION # 86
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. Unintentional radiation from the PC power supply
- C. Bluetooth devices in the user's work area
- D. Excess RF energy from a nearby AP
Answer: B
NEW QUESTION # 87
Lynne runs a small hotel, and as a value added service for his customers he has implemented a Wi-Fi hot-spot.
Lynne has read news articles about how hackers wait at hot-spots trying to take advantage of unsuspecting users. He wants to avoid this problem at his hotel.
What is an efficient and practical step that Lynne can take to decrease the likelihood of active attacks on his customers' wireless computers?
- A. Require EAP-FAST authentication and provide customers with a username/password on their receipt.
- B. Implement an SSL VPN in the WLAN controller that initiates after HTTPS login.
- C. Enable station-to-station traffic blocking by the access points in the hotel.
- D. Implement Network Access Control (NAC) and require antivirus and firewall software along with OS patches.
Answer: C
Explanation:
Explanation
Station-to-station traffic blocking is a security feature that prevents wireless clients from communicating with each other on the same network. This can prevent active attacks such as man-in-the-middle, ARP spoofing, or denial-of-service that hackers may launch from their devices against other users in a public Wi-Fi hotspot. By enabling station-to-station traffic blocking by the access points in the hotel, Lynne can decrease the likelihood of such attacks on his customers' wireless computers. This feature can be configured on most wireless APs or controllers345. References: CWNA-109 Study Guide, Chapter 10: Wireless LAN Security, page
427; CWNA-108 Study Guide, Chapter 10: Wireless LAN Security, page 417; Wireless Station-to-Station Traffic Being Blocked.
NEW QUESTION # 88
......
Understanding functional and technical aspects of CWNA® - Certified Wireless Network Administrator Security Principles and Practices
The following will be discussed in CWNP CWNA-108 exam dumps:
- Reading Azimuth and Elevation charts for different antenna types
- Polarization
- RF cables and connectors
- Apply the basic concepts of RF mathematics and measurement
- Passive gain
- Equivalent Isotropically Radiated Power (EIRP)
- Amplification
- Gain and loss
- Absorption
- Antenna orientation
- RSSI
- Highly directional antennas
- Explain and apply the functionality of RF antennas, antenna systems, and accessories available
- Watt and milliwatt
- Identify RF signal characteristics as they relate to antennas
- RF and physical line of sight and Fresnel zone clearance
- Return Loss
- dBm and dBi
- Wavelength, frequency, amplitude, phase, sine waves
- Free Space Path Loss (FSPL)
- Maximal Ratio Combining (MRC)
- dBm to mW conversion rules of 10 and 3
- RF propagation and coverage
- Beamwidths
- Reflection, refraction, diffraction and scattering
- Antenna diversity types
- CWNP
- SNR
- Decibel (dB)
- Lightning arrestors and grounding rods/wirestween inside execution measures and client assumptions for execution
- Spatial multiplexing (SM)
- Voltage Standing Wave Ratio (VSWR)
- Define and explain the basic characteristics of RF and RF behavior (CHAPTER 2)
- MIMO
- Attenuation
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Practice Exam CWNA-108 Realistic Dumps Verified Questions: https://drive.google.com/open?id=1pbFNaD2Bqo4rTOxCwkNUv6zNx1_8IugF
