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CWNP CWNA-108 exam covers a wide range of topics including wireless LAN infrastructure, wireless LAN security, troubleshooting, and wireless network design. CWNA-108 exam is designed to test the candidate's knowledge and understanding of wireless networking technologies and their ability to apply this knowledge to real-world situations. CWNA-108 exam consists of 60 multiple-choice questions, and the candidates are given 90 minutes to complete the exam.
More about CWNA-108 Exam
The goal of CWNA-108 test is the installation, configuration, troubleshooting, and maintenance of wireless networks deployed in small businesses as well as enterprises. If you are to take such a test, here are vital details to note first:
- Cost: $225.
- Passing mark: 70%;
- Question styles: multiple-choice, multiple-answer;
NEW QUESTION # 32
What statement about 802.11 WLAN performance is true?
- A. WLANs perform better as more wireless clients connect with each AP
- B. In most WLANs, no special skill or tuning is required to get peak performance
- C. To get the best performance out of an AP, you should disable data rates of 72 Mbps and lower
- D. In modem networks, both centralized and distributed data forwarding work well for most standard office deployments
Answer: D
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 # 33
When considering data rates available in HT and VHT PJY devices, in addition to the modulation, coding, channel width, and spatial streams, what impacts the data rate according to the MCS tables?
- A. The guard interval
- B. The height of the antennas
- C. The client drivers
- D. The Frequency band in use
Answer: A
NEW QUESTION # 34
What best describes WPA2 in relation to 802.11 wireless network?
- A. WPA2 is specified in the 802. 11 standard as implementing CCMP/AES
- B. WPA2 is the standard that defines security for WLANs.
- C. WPA2 is a certification created by the Wi-Fi Alliance that validates device correctly implement CCMP/AES.
- D. WPA2 is the second version of WPA and it enhances security through the use of TKIP Instead of WEP.
Answer: B
NEW QUESTION # 35
What distinguishes an independent basic service set (IBSS) from an infrastructure basic service set (BSS)?
- A. An IBSS does not support any 802.11ac enhancements, but a BSS does.
- B. An IBSS does not support 802.11 authentication or association, but a BSS does.
- C. An IBSS does not have a distribution system (DS), but a BSS does.
- D. An IBSS does not require beacon frames, but a BSS does.
Answer: C
NEW QUESTION # 36
What phrase defines Equivalent Isotropically Radiated Power (EIRP)?
- A. The power output from the radio after cable losses
- B. The power output from the radio into the RF cable
- C. The highest RF signal strength that is transmitted from a given antenna
- D. Power supplied from the transmission line to the antenna input
Answer: C
NEW QUESTION # 37
Users and Network support personnel at a mid-sized equipment manufacturer have been discussing the potential uses and benefits of implementing an indoor WLAN. The network administrator and network manager have requested a meeting of senior management personnel to discuss a WLAN implementation before performing a site survey or taking any implementation steps. The first topic of discussion in the meeting is the corporate policy concerning implementation and use of WLAN technology.
What specific topics are appropriate in this policy meeting? (Choose 2)
- A. User productivity impact
- B. Use of the latest 802.11ac equipment
- C. Antenna types
- D. Business justification
- E. Defining RF channels for use
Answer: A,D
NEW QUESTION # 38
What statements accurately describe the RF cables and connectors that are used in an 802.11 WLAN system? (Choose 3)
- A. 75 and 125 ohms are the typical impedances of 802.11 WLAN connectors.
- B. Two RF connectors of the same type (e.g. SMA), manufactured by different companies, may vary in specifications.
- C. Large diameter RF cables cause greater loss than small diameter cables.
- D. Every RF connector causes insertion loss.
- E. RF cables have upper and lower frequency range specifications.
Answer: B,D,E
NEW QUESTION # 39
Option 43 must be configured to allow access points to locate controllers. In what network service should this option be configured?
- A. DHCP
- B. DNS
- C. LDAP
- D. RADIUS
Answer: A
NEW QUESTION # 40
A WLAN transmitter that emits a 50 mW signal is connected to a cable with 3 dB loss. If the cable is connected to an antenna with 9dBi gain, what is the EIRP at the antenna element?
- A. 26 dBm
- B. 10 dBm
- C. 23 dBm
- D. 13 dBm
Answer: C
NEW QUESTION # 41
What security option for 802.11 networks supports SAE and requires protected management frames?
* WPA
- A. OWE
- B. WPA3
- C. WPA2
Answer: A
Explanation:
Explanation
The security option for 802.11 networks that supports SAE and requires protected management frames is WPA3. WPA3 stands for Wi-Fi Protected Access version 3 and is the latest security standard for WLANs.
WPA3 supports two modes: WPA3-Personal and WPA3-Enterprise. 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. WPA3 also requires protected management frames, which are encrypted frames that prevent spoofing, replay, or denial-of-service attacks on management frames such as deauthentication or disassociation frames. WPA, WPA2, and OWE do not support SAE or require protected management frames. 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 # 42
A WLAN is implemented using wireless controllers. The APs must locate the controllers when powered on and connected to the network. Which one of the following methods is commonly used to locate the controllers by the APs?
- A. GRE
- B. NTP
- C. SNMP
- D. DHCP
Answer: D
Explanation:
Explanation
DHCP (Dynamic Host Configuration Protocol) is a commonly used method to locate the controllers by the APs in a WLAN that is implemented using wireless controllers. DHCP is a protocol that allows a device to obtain an IP address and other network configuration parameters from a server. In a wireless controller scenario, the APs can use DHCP to request an IP address from a DHCP server, which can also provide the IP address or hostname of the wireless controller as an option in the DHCP response. This way, the APs can discover the wireless controller and establish a connection with it. Alternatively, the APs can also use other methods to locate the wireless controller, such as DNS (Domain Name System), broadcast or multicast discovery, or manual configuration. References: 1, Chapter 8, page 309; 2, Section 5.2
NEW QUESTION # 43
What 802.11 PHY uses available space in very low frequency ranges that is not in use at the time by broadcast video signals?
- A. DSSS
- B. SIG
- C. DMG
- D. TVHT
Answer: A
Explanation:
https://www.cwnp.com/802-11ac-vht-just-the-facts/
NEW QUESTION # 44
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. Calibrate the floor plan
- B. Install iPerf
- C. Install WinPCAP
- D. Nothing, you can simply start capturing signal readings
Answer: A
Explanation:
Explanation
Calibrating the floor plan is what you must do before gathering survey data after the floor plan is imported when using a site survey tool for post-implementation validation. A site survey tool is a software application that can run on a laptop, tablet, smartphone, or other device that has a Wi-Fi adapter and a GPS receiver. A site survey tool can scan the wireless environment and collect information about the detected access points and client stations, such as their SSID, BSSID, channel, signal strength, security, and data rate. A site survey tool can also measure and display various metrics of network performance, such as throughput, jitter, packet loss, delay, and SNR. A site survey tool can also use a floor plan to visualize the wireless coverage and quality in different locations on a map. A floor plan is an image file that shows the layout and dimensions of a building or an area where the WLAN is deployed. A floor plan can be imported from various sources, such as a CAD file, a PDF file, an image file, or a Google Maps screenshot. After importing a floor plan into a site survey tool, it is necessary to calibrate the floor plan before gathering survey data. Calibrating the floor plan means adjusting the scale and orientation of the floor plan to match the actual size and direction of the area.
Calibrating the floor plan can be done by using a reference point or a reference line that has a known distance or angle in the real world. Calibrating the floor plan ensures that the survey data is accurate and consistent with the physical environment. References: 1, Chapter 7, page 290; 2, Section 4.3
NEW QUESTION # 45
The requirement for a WLAN you are installing state that It must support unidirectional delays of less than 150 ms and the signal strength at all receivers can be no lower than -67 dBm.
What application is likely used that demands these requirements?
- A. VoIP
- B. E-mail
- C. FTP
- D. RTLS
Answer: D
NEW QUESTION # 46
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. WPAN
- B. Access BSS
- C. Wireless bridging
- D. IBSS
Answer: C
Explanation:
https://docs.netgate.com/pfsense/en/latest/wireless/bridges.html
https://www.lifewire.com/wireless-bridging-explained-816563
NEW QUESTION # 47
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. 802.11r and 802.11k
- B. 802.11j and 802.11k
- C. 802.11r and 802.11w
- D. 802.11z and 802.11w
Answer: C
NEW QUESTION # 48
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