Free Certified Wireless Network Administrator Exam CWNA-109 Exam Practice Test

Option 43 must be configured to allow access points to locate controllers. In what network service should this option be configured?

• DNS
• LDAP
• DHCP
• RADIUS

What statement is true concerning the use of Orthogonal Frequency Division Multiplexing (OFDM) modulation method in IEEE 802.11 WLANs?

• OFDM implements BPSK modulation to allow for data rates up to 7 Gbps.
• OFDM was first introduced in 802.11a and is used by the ERP, HT and VHT PHYs as well.
• OFDM modulation is used only in 5 GHz 802.11 transmissions.
• OFDM was used by Frequency Hopping Spread Spectrum (FHSS) PHY devices.

You are reporting on the RF environment in your facility. The manager asks you to describe the noise floor noted in the report. Which of the following is the best explanation?

• The noise caused by elevators, microwave ovens, and video transmitters.
• The extra energy radiated by access points and client devices beyond that intended for the signal.
• The energy radiated by flooring materials that causes interference in the 2.4 GHz and 5 GHz bands.
• The RF energy that exists in the environment from intentional and unintentional RF radiators that forms the baseline above which the intentional signal of your WLAN must exist.

What terms accurately complete the following sentence?The IEEE 802.11-2016 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 and is deprecated.

• 802.1X/EAP, WEP
• CCMP, TKIP
• TLS, SSL
• RC5, RC4

You are troubleshooting a client problem with a 2.4 GHz WLAN connection. The client is experiencing surprisingly low data rates during the work day. You analyze the workspace outside of business hours and detect a strong signal with a typical noise floor at the client location. During working hours, the user works with a laptop in the area and uses an external USB hard drive for continuous data access. The user also states that the laptop works as expected on her home network. The user working approximately 8 feet away from this client experiences no problems.Based on this information, what is the likely cause of the problem?

• The AP is overloaded during the work day
• The drivers in the laptop are corrupt
• The laptop has a failing wireless adapter
• The external hard drive is USB 3.0 and is causing a significant increase in the noise floor when in use

What 802.11 PHY uses available space in very low frequency ranges that is not in use at the time by broadcast video signals?

• DMG
• SIG
• DSSS
• TVHT

In which plane of the three networking planes is an access point configured by a WLAN controller?

• Control
• Management
• Security
• Data

An AP is advertised as a tri-band, 4x4:4, Wi-Fi 6, 802. 11ax AP. Based on this information and assuming it is correctly advertised, what can be determined as certainly true about this AP?

• It supports four channels in 2.4 GHz and 4 channels in 5 GHz
• It supports UL-MU-MIMO
• It uses a modified OpenWRT firmware
• It has 4 radio chains

You are tasked with performing a throughput test on the WLAN. The manager asks that you use open source tools to reduce costs. What open source tool is designed to perform a throughput test?

• iPerf
• PuTTy
• IxChariot
• Python

What common feature of MDM solutions can be used to protect enterprise data on mobile devices?

• Over-the-air registration
• Onboarding
• Containerization
• Self-registration