Free CWNA-109 Practice Questions & Answers 2026 Part2 | Certified Wireless Network Administrator

When a client station sends a broadcast probe request frame with a wildcard SSID, how do APs respond?

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

When an ACK frame is not received by the transmitting STA, what is assumed?

What ID is typically mapped to an AP's MAC address if a single BSS is implemented?

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?

What factor is likely to cause the least impact on the application layer throughput of an 802.11nclient station in a 2.4 GHz HT BSS?

Which IEEE 802.11 physical layer (PHY) specification includes support for and compatibility with bothERP and HR/DSSS?

What is appended to the end of each 802.11 data frame after the payload?

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 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? The client STA can useBeacon frames transmitted by the APto verify that an AP supports the same data rates that it supports. Beacon frames are management frames that are periodically broadcasted by the APs to announce their presence, capabilities, and parameters. One of the information elements contained in the Beacon frames is the Supported Rates or Extended Supported Rates, which lists the data rates that the AP can use for communication. The client STA can compare its own data rates with those advertised by the AP to determine if they are compatible. Data frames, authentication frames, and probe request frames do not contain information about data rates.Reference:[CWNP Certified Wireless Network Administrator Official Study Guide: Exam CWNA-109], page 133; [CWNA: Certified Wireless Network Administrator Official Study Guide: Exam CWNA-109], page 123.

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 5 GHz and 20 MHz channels in 2.4 GHz with one of each radio operational. 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?

When an ACK frame is not received by the transmitting STA, what is assumed?

What ID is typically mapped to an AP's MAC address if a single BSS is implemented?

When an ACK frame is not received by the transmitting STA, what is assumed?

ABC Company is planning to install a new 802.11ac WLAN, but wants to upgrade its wired infrastructure first to provide the best user experience possible. ABC Company has hired you to perform the RF site survey. During the interview with the network manager, you are told that the new Ethernet edge switches will support VoIP phones and 802.11 access points, both using 802.3 PoE.After hearing this information, what immediate concerns do you note?

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?

What statement about 802.3, Clause 33 Power over Ethernet is true?

You are the network administrator for ABC Company. Your manager has recently attended a wireless security seminar. The seminar speaker taught that a wireless network could be hidden from potential intruders if you disabled the broadcasting of the SSID in Beacons and configured the access points not to respond to Probe Request frames that have a null SSID field.Your manager suggests implementing these security practices. What response should you give to this suggestion?

In addition to coverage analysis results, what should be included in a post-deployment site survey report to ensure WLAN users experience acceptable performance?

What factor does not influence the distance at which an RF signal can be effectively received?

When an ACK frame is not received by the transmitting STA, what is assumed?

Which directional antenna types are commonly used by indoor Wi-Fi devices in a MIMO multiple spatial stream implementation?

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

You are the network administrator for ABC Company. Your manager has recently attended a wireless security seminar. The seminar speaker taught that a wireless network could be hidden from potential intruders if you disabled the broadcasting of the SSID in Beacons and configured the access points not to respond to Probe Request frames that have a null SSID field. Your manager suggests implementing these security practices. What response should you give to this suggestion?

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?

What security solution is required to be used in place of Open System Authentication for all open network802.11 implementations in the 6 GHz band?

When a client station sends a broadcast probe request frame with a wildcard SSID, how do APs respond?

Which one of the following is not a factor considered when calculating the Link Budget for an outdoor point-to-point WLAN bridge link?

Which one of the following is not a factor considered when calculating the Link Budget for an outdoor point-to- point WLAN bridge link?

When an ACK frame is not received by the transmitting STA, what is assumed?

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?

The BSA of an AP covers the area used by the sales and marketing department. Thirty-five stations operate in this space. The users indicate that they need more throughput and all stations are 5 GHz capable 802.11ac clients. The current AP configuration uses 20 MHz channels in both 2.4 GHz and 5 GHz. What is the least expensive solution available for increasing throughput for these users without implementing configuration options that are not recommended?

In a long-distance RF link, what statement about Fade Margin is true?

When an ACK frame is not received by the transmitting STA, what is assumed?

What is always required to establish a high quality 2.4 GHz RF link at a distance of 3 miles (5 kilometers)?

What can an impedance mismatch in the RF cables and connectors cause?

You are performing a post-implementation validation survey. What basic tool can be used to easily locate areas of high co-channel interference?

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

You are performing a post-implementation validation survey. What basic tool can be used to easily locate areas of high co-channel interference? A Wi-Fi scanner is a basic tool that can be used to easily locate areas of high co-channel interference. A Wi-Fi scanner is a software application that can run on a laptop, tablet, smartphone, or other device that has a Wi-Fi adapter. A Wi-Fi scanner can scan the wireless environment and display information about the detected access points and client stations, such as their SSID, BSSID, channel, signal strength, security, and data rate. A Wi-Fi scanner can also show the channel utilization and overlap of different access points, which can indicate the level of co-channel interference. Co-channel interference is a type of interference that occurs when multiple access points use the same or adjacent channels within the same coverage area. Co-channel interference can reduce the throughput and performance of the WLAN, as the access points and client stations have to contend for the channel access and avoid collisions. To identify areas of high co-channel interference, a Wi-Fi scanner can be used to measure the signal strength and channel utilization of different access points and compare them with a threshold or a baseline.Alternatively, a Wi-Fi scanner can also use a color-coded heat map to visualize the co-channel interference level in different locations.Reference:1, Chapter 7, page 279;2, Section 4.3

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?