[Sep 17, 2023] CWNA-108 Ultimate Study Guide - FreeCram
Ultimate Guide to Prepare CWNA-108 Certification Exam for CWNA Certification in 2023
The CWNA-108 certification exam is ideal for wireless network administrators who are looking to advance their careers and take on more challenging roles in the industry. By earning this certification, candidates can demonstrate their expertise in wireless networking and increase their earning potential.
CWNP CWNA-108 (CWNP Certified Wireless Network Administrator) exam is designed to validate the skills and knowledge of professionals in the wireless networking field. CWNA-108 exam covers a wide range of topics such as WLAN network design, installation, troubleshooting, and security. CWNP Certified Wireless Network Administrator Exam certification is highly valued in the industry as it is vendor-neutral and covers concepts that are applicable to a wide range of wireless technologies.
NEW QUESTION # 56
You support a WLAN using dual- band 802.11ac three stream access points. All access points have both the 2.4 GHz and 5 GHz radios enabled and use 40 MHz channels in 2.4 GHz. A manager is concerned about the fact that each access point is connected using a 1 Gbps Ethernet link. He is concerned that the Ethernet link will not be able to handle the load from the wireless radios. What do you tell him?
- A. His concern is valid and the company should immediately plan to run a second 1 Gbps Ethernet link to each AP.
- B. His concern is valid and the company should upgrade all Ethernet link to 10 Gbps immediately.
- C. His concern is invalid because the AP will compress all data before transmitting it onto the Ethernet link.
- D. Due to 802.11 network operations and dynamic rates used by devices on the network, the two radios will likely not exceed the 1 Gbps Ethernet link .
Answer: B
NEW QUESTION # 57
In a mesh BSS (MBSS), according to the 802.11-2016 standard, what device connect the mesh to an Ethernet network?
- A. Mesh Router
- B. Mesh Switch
- C. Mesh Gate
- D. Mesh Portal
Answer: D
Explanation:
The function of an AP that performs this translation between the wireless network and the wired network (as with M and P) is called the portal. The portal is a function. It is just the logical point where wireless MSDUs are translated to and from a non-802.11 network (802.11-2007, def 3.39 and 3.110). An AP commonly performs the portal function. M, and P are APs and portals.
https://www.cwnp.com/uploads/802-11s_mesh_networking_v1-0.pdf
https://s2.smu.edu/~camp/pubs/mesh80211s.pdf
NEW QUESTION # 58
What component of the 802.11 standard allows stations to reserve access to the RF medium for a specified period of time?
- A. Probe Request frames
- B. DTIM Interval
- C. Listen Interval
- D. Short guard intervals
- E. RTS or CTS frames
Answer: E
NEW QUESTION # 59
What statement about 802.3, Clause 33 Power over Ethernet is true?
- A. The lowest voltage drop is achieved when using CAT6 cable instead of Cat5 or CAT5e.
- B. Only endpoint PSEs are supported.
- C. Only midspan PSEs are supported.
- D. When using CAT5 cabling, you increase the maximum draw available to the PD over that available with CAT6.
Answer: A
Explanation:
https://www.cablinginstall.com/articles/2012/08/cat-6a-vs-cat-5e-poe.html
NEW QUESTION # 60
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. Bluetooth devices in the user's work area
- B. Unintentional radiation from the PC power supply
- C. Excess RF energy from a nearby AP
- D. USB 3 devices in the user's work area
Answer: B
NEW QUESTION # 61
You manage a WLAN with 100 802.11ac access points. All access points are configured to use 80 MHz channels. In a particular BSS, only 40 MHz communications are seen. What is the likely cause of this behavior?
- A. The AP is improperly configured to use only 40 MHz of the 80 MHz allocated bandwidth
- B. All clients implement single spatial stream radios
- C. The short guard interval is also enabled
- D. The clients are all 802.11n STAs or lower
Answer: D
Explanation:
https://7signal.com/802-11ac-migration-part-2-whats-nobodys-telling-you-about-80mhz-and-160mhz-channel-bonding
NEW QUESTION # 62
A dual-band 802-1 lac AP must be powered by PoE. As a class 4 device, what power level should be received at the AP?
- A. 15.4 W
- B. 25. 5W
- C. 12.95 W
- D. 30 W
Answer: B
Explanation:
Similar to a PoE network switch, the PoE plus switch also supplies power over two pairs, but it adds an additional power class that is able to deliver power up to 25.5W for a PD with a voltage range from
42.5V to 57V. The max power delivered by each port of a PoE+ switch is 30W, along with a voltage range from 50V to 57V.
https://community.fs.com/blog/poe-switch-types.html
https://en.wikipedia.org/wiki/Power_over_Ethernet#:~:text=Class%204%20can%20only%20be%2
0used%20by%20IEEE,0%20device.%20Configuration%20via%20Ethernet%20layer%202%20LL DP
NEW QUESTION # 63
What phrase defines Equivalent Isotropically Radiated Power (EIRP)?
- A. The highest RF signal strength that is transmitted from a given antenna
- B. The power output from the radio into the RF cable
- C. The power output from the radio after cable losses
- D. Power supplied from the transmission line to the antenna input
Answer: A
NEW QUESTION # 64
What parameter of the client driver should be configured on a Windows computer to optimize moving from one AP to another within the ESS?
- A. Band preference
- B. SSID selection
- C. ESSID selection
- D. Roaming threshold
Answer: D
NEW QUESTION # 65
What item is essential for performing a manual RF site survey for a warehouse facility?
- A. A facility map with an explanation of applications used in each area
- B. Predictive site survey software that supports highly directional antennas
- C. I-Beam mounting kits for hanging temporary access points
- D. Low-gain omni antennas for APsmounted high on warehouse ceilings
Answer: A
NEW QUESTION # 66
You are using a site survey tool for post-implementation validation. You have installed the appropriate adapter driver and imported a floor plan. Now, you want to take the next step in proper tool use. What must you do before gathering survey data after the floor plan is imported?
- A. Install iPerf
- B. Nothing, you can simply start capturing signal readings
- C. Install WinPCAP
- D. Calibrate the floor plan
Answer: D
NEW QUESTION # 67
What statement describes the authorization component of a AAA implementation?
- A. Validating client device credentials against a database.
- B. Granting access to specific network services or resources according to a user profile.
- C. Verifying that a user is who he says he is.
- D. Implementing a WIPS as a full-time monitoring solution to enforce policies.
Answer: B
NEW QUESTION # 68
XYZ Corporation is experiencing connectivity problems with their existing building-to-building bridge link. A concrete wall on the roof of one building is partially blocking the Fresnel Zone, and the connection is dropping many frames. The administrator moves the antenna to an area not obstructed by the concrete wall and then realizes the RF cable cannot reach the new location.
If an extension cable is added to move the antenna, what are the likely results?
- A. The data throughput rate will increase because VSWR will decrease.
- B. The size of the Fresnel zone will increase.
- C. The likelihood of a direct lightning strike will increase.
- D. The antenna's azimuth beamwidth will decrease.
- E. The Equivalent Isotropically Radiated Power (EIRP) will decrease.
Answer: E
NEW QUESTION # 69
What standard is referenced into the 802.11-2012 specification and is recommend for robust WLAN client security?
- A. SSID hiding
- B. WEP
- C. IPSec VPN
- D. 802.1X/EAP
Answer: D
NEW QUESTION # 70
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. Beamwidth
- B. Receive sensitivity
- C. Range
- D. Active gain
Answer: A
NEW QUESTION # 71
What fact is true regarding controllers and Aps in a split-MAC architecture?
- A. An IP tunnel is established between the AP and controller for AP management and control functions
- B. With 802.1X/EAP security, the AP acts as the supplicant and the controller acts as the authenticator
- C. Using centralized data forwarding, frames leaving the Aps are never tagged Ethernet frames with VLAN identifiers
- D. Management and data frames must be processed locally by the AP, while control frames are sent to the controller
Answer: A
NEW QUESTION # 72
What statement about the SSID is true?
- A. The SSID is a pseudo-random number assigned to each client by an AP.
- B. The SSID is an alphanumeric value assigned to devicemanufacturers by the IEEE.
- C. The SSID must be included in an association request frame.
- D. The SSID is a security session identifier used in RSNs.
Answer: C
NEW QUESTION # 73
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