2024 Valid CWNA-108 Exam Updates - 2024 Study Guide
CWNA-108 Certification - The Ultimate Guide [Updated 2024]
CWNP CWNA-108 exam is an online, proctored exam that consists of 60 multiple-choice questions. CWNA-108 exam is administered by the Certified Wireless Network Professional (CWNP) organization, which is a vendor-neutral organization that provides training and certification programs for wireless networking professionals. Passing CWNA-108 exam demonstrates that an individual has the knowledge and skills required to design, implement, and manage wireless networks in a professional environment.
NEW QUESTION # 14
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. ESSID selection
- B. Roaming threshold
- C. SSID selection
- D. Band preference
Answer: B
NEW QUESTION # 15
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 # 16
An RF signal sometimes bends as it passes through some material other than free space. What is the term that describes this behavior?
- A. Scattering
- B. Reflection
- C. Warping
- D. Refraction
Answer: D
NEW QUESTION # 17
What 802.11 network configuration would result in multiple stations broadcasting Beacon frames with the same BSSID but with different source addresses?
- A. An SCA network is in use.
- B. An IBSS is used instead of a BSS.
- C. A single AP supports multiple BSSs with different SSIDs
- D. Multiple Aps have been loaded with the same configuration from an image file.
Answer: B
Explanation:
Ad-Hoc Networks Do Not Have a MAC Address
Every BSS needs a BSSID, and using the access point's MAC address works fine most of the time.
However, an ad-hoc network, a network that forwards traffic from node to node, has no access point.
When a BSS does not have a physical access point, in an ad-hoc network for example, the network generates a 48-bit string of numbers that looks and functions just like a MAC address, and that BSSID goes in every packet.
https://www.juniper.net/documentation/en_US/junos-space-
apps/networkdirector3.0/topics/concept/wireless-ssid-bssid-essid.html#jd0e46
https://www.oreilly.com/library/view/80211-wireless-networks/0596100523/ch04.html
NEW QUESTION # 18
What statement is true concerning the use of Orthogonal Frequency Division Multiplexing (OFDM) modulation method in IEEE 802.11 WLANs?
- A. OFDM modulation is used only in 5 GHz 802.11 transmissions.
- B. OFDM was first introduced in 802.11a and is used by the ERP, HT and VHT PHYs as well.
- C. OFDM implements BPSK modulation to allow for data rates up to 7 Gbps.
- D. OFDM was used by Frequency Hopping Spread Spectrum (FHSS) PHY devices.
Answer: B
Explanation:
Explanation
NEW QUESTION # 19
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?
- A. Increasing or decreasing the number of spatial streams in use by the client station and AP
- B. Implementation Fast BSS Transition (FT) for roaming
- C. Implementation of several other clients in the same BSS using 802.11g radios.
- D. RF interference from more than 10 nearby Bluetooth transmitters
Answer: C
NEW QUESTION # 20
When a STA has authenticated to an AP (AP-1), but still maintains a connection with another AP (AP-2), what is the state of the STA on AP-1?
- A. Unauthenticated and Unassociated
- B. Authenticated and Unassociated
- C. Authenticated and Associated
- D. Transitional
Answer: B
Explanation:
Explanation
Authenticated and Unassociated. According to one of the web search results1, a STA can be authenticated to multiple APs, but it can only be associated to one AP at a time. Association is the process of establishing a logical link between the STA and the AP, which allows the STA to send and receive data frames through the AP2. Therefore, when a STA has authenticated to an AP-1, but still maintains a connection with another AP-2, it means that the STA is authenticated to both APs, but only associated to AP-2. The state of the STA on AP-1 is authenticated and unassociated, which means that the STA can switch to AP-1 without repeating the authentication process, but it cannot send or receive data frames through AP-1 until it becomes associated.
NEW QUESTION # 21
What phrase defines Equivalent Isotropically Radiated Power (EIRP)?
- A. Power supplied from the transmission line to the antenna input
- B. Reflected power due to an impedance mismatch in the signal path
- C. The power output from the radio into the RF cable
- D. The power output from the radio after cable losses
- E. The highest RF signal strength that is transmitted from a given antenna
Answer: E
NEW QUESTION # 22
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 must be included in an association request frame.
- C. The SSID is an alphanumeric value assigned to devicemanufacturers by the IEEE.
- D. The SSID is a security session identifier used in RSNs.
Answer: B
NEW QUESTION # 23
What statement about 802.11 WLAN bridges is true?
- A. WLAN bridges may support MIMO communication, but only if used in the GHz frequency band
- B. WLAN bridges only work in the 2.4 GHz frequency band and they support only SISO communications
- C. WLAN bridges must use a channel with acceptable SNR at both transceivers to maintain the desired data rate bi-directionally
- D. WLAN bridges must be implemented such that no interference occurs on the channel anywhere between the two endpoints used to establish the bridge
Answer: A
Explanation:
https://www.apm.com.tw/mimo-300mbps-outdoor-bridge-2-4ghz-ape-2405mm8.html WiGig Is 802.11ad and 802.11ay WiGig transmits data wirelessly on the 60 GHz frequency published in 2012, uses the 802.11ad standard offer 5Gbps at up to 10 meters release in 2019, 802.11ay is scheduled for release in
2019 offering 10Gbps at up to 100 meters
Wifi 6
802.11ax,
https://www.cnet.com/home/internet/wi-fi-6-and-what-it-means-for-you-wifi-routers/ WPA3 WPA3 standard also replaces the pre-shared key (PSK) exchange with Simultaneous Authentication of Equals (SAE) WPA3 The new standard uses an equivalent 192-bit cryptographic strength in WPA3-Enterprise mode Protection of management frames as specified in the IEEE 802.11w amendment is also enforced by the WPA3 specifications.
NEW QUESTION # 24
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 clients are configured to use WPA and 5 GHz channels only support WPA2.
- B. The antennas in the laptop have insufficient gain to detect the 5 GHz signals.
- C. The client drivers are faulty and should be upgraded.
- D. The access points are configured to disallow 5 GHz.
Answer: B
Explanation:
Explanation/Reference:
NEW QUESTION # 25
What terms accurately complete the following sentence?
The IEEE 802.11-2012 standard specifies mandatory support of the ___________ cipher suite for Robust Security Network Associations, and optional use of the ___________ cipher suite, which is designed for use with pre-RSNA hardware.
- A. RC5, RC4
- B. TLS, SSL
- C. 802.1X/EAP, WEP
- D. CCMP, TKIP
Answer: D
NEW QUESTION # 26
What can an impedance mismatch in the RF cables and connectors cause?
- A. Increased range of the RF signal
- B. Increased amplitude of the RF signal
- C. Fewer MCS values in the MCS table
- D. Excessive VSWR
Answer: D
Explanation:
Explanation
VSWR stands for Voltage Standing Wave Ratio, which is a measure of how well the impedance of the RF cable and connectors matches the impedance of the transmitter and the antenna. Impedance is the opposition to the flow of alternating current in an RF circuit, and it depends on the frequency, resistance, capacitance, and inductance of the components. A perfect impedance match would have a VSWR of 1:1, meaning that all the power is transferred from the transmitter to the antenna, and none is reflected back. However, in reality, there is always some degree of mismatch, which causes some power to be reflected back to the transmitter, creating standing waves along the cable. This reduces the efficiency and performance of the wireless system, and can also damage the transmitter. Excessive VSWR can be caused by using poor quality or damaged cables and connectors, or by using components that have different impedance ratings123. References: CWNA-109 Study Guide, Chapter 2: Radio Frequency Fundamentals, page 90; CWNA-108 Study Guide, Chapter 2: Radio Frequency Fundamentals, page 86; CWNP website, CWNA Certification.
NEW QUESTION # 27
What security solution is deprecated in the 802.11 standard and should never be used in any modern WLAN deployment?
- A. CCMP
- B. Open System Authentication
- C. Shared Key Authentication
- D. AES
Answer: C
Explanation:
Explanation
Shared Key Authentication is a security solution that was defined in the original 802.11 standard as an alternative to Open System Authentication, which does not provide any security at all. Shared Key Authentication uses WEP (Wired Equivalent Privacy) to encrypt and authenticate data frames between the client station and the AP. However, WEP has been proven to be extremely vulnerable to various attacks that can easily crack the encryption key and compromise the network security. Therefore, Shared Key Authentication is deprecated in the 802.11 standard and should never be used in any modern WLAN deployment . References: [CWNA-109 Study Guide], Chapter 10: Wireless LAN Security, page 401;
[CWNA-108 Study Guide], Chapter 10: Wireless LAN Security, page 391; [Wikipedia], Wired Equivalent Privacy.
NEW QUESTION # 28
You have received a report of poor wireless connections on the third floor of a building under your administration. Three individuals have reported the problem. Apparently, the connections are reporting a strong signal, but the users cannot access the Internet. With the problem identified, what is the next logical step in the troubleshooting process?
- A. Discover the scale of the problem
- B. Perform corrective actions
- C. Create a plan of action or escalate the problem
- D. Verify the solution
Answer: B
NEW QUESTION # 29
What statement about 802.3. Clause 33 Power over Ethernet is true?
- A. Only endpoint PSEs are supported.
- B. Only midspan PSEs are supported.
- C. The lowest voltage drop is achieved when using CAT6 cable instead of CAT5 or CAT5e.
- D. When using CAT5 cabling, you increase the maximum draw available to the PD over that available with CAT6.
Answer: C
Explanation:
http://poe-world.com/Calculator/
NEW QUESTION # 30
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