CWNA-109 Exam - Free Questions and Answers

Question 1 ( Exam A )

You administer a small WLAN with nine access points. As a small business, you do not run a RADIUS server and use WPA2-Personal for security and the APs are in autonomous mode. Recently, you changed the passphrase for WPA2-Personal in all APs and clients. Several users are now reporting the inability to connect to the network at times and it is constrained to one area of the building and those clients work properly elsewhere. When using a WLAN scanner, you see that the AP covering that area is online and has a strong signal. No other changes have been made to the environment and all access points are the same model. What is the likely problem?

A. The AP that primarily covers the problem area is improperly configured
B. The clients are improperly configured
C. The AP that primarily covers the problem area has failed
D. The clients have failed network adapters

Answer : A

Question 2 ( Exam A )

What is required when operating 802.11ax APs in the 6 GHz band using passphrase-based authentication?

A. VHT PHY
B. CCMP
C. SAE
D. HT PHY

Answer : C

Question 3 ( Exam A )

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?

A. It supports four channels in 2.4 GHz and four channels in 5 GHz
B. It has four radio chains
C. It supports UL-MU-MIMO
D. It uses a modified OpenWRT firmware

Answer : B

Question 4 ( Exam A )

You are troubleshooting a controller-based AP that is unable to locate the controller. DHCP is not used and the controller is located at 10.10.10.81/24 while the AP is on the 10.10.16.0/24 network. Of the listed options, what should be inspected to verify proper configuration?

A. TFTP
B. Controller hosts file
C. DNS
D. WINS

Answer : C

Question 5 ( Exam A )

You are a small business wireless network consultant and provide WLAN services for various companies. You receive a call from one of your customers stating that their laptop computers suddenly started experiencing much slower data transfers while connected to the WLAN. This company is located in a multi-tenant office building and the WLAN was designed to support laptops, tablets and mobile phones. What could cause a sudden change in performance for the laptop computers?

A. A few of your customer's users have Bluetooth enabled wireless headsets.
B. A new tenant in the building has set their AP to the same RF channel that your customer is using.
C. The sky was not as cloudy that day as it typically is and the sun also radiates electromagnetic waves.
D. The antennas in the laptops have been repositioned.