Wireless questions on the CCNA cover 802.11 standards (ax/ac/n), WPA3, SSID/BSSID concepts, WLC architecture (FlexConnect, local switching), and client connectivity troubleshooting. These are mostly MCQ and multi-select.
Start Scenario PracticeA technician is installing a new set of outdoor wireless access points. Which TWO factors are most likely to cause signal attenuation or interference for these endpoints?
Explanation: Option A is correct because thick concrete walls and metal structures are dense physical obstructions that absorb, reflect, and scatter RF energy, causing significant signal attenuation, especially at higher frequencies like 5 GHz and 6 GHz. Option C is correct because 2.4 GHz cordless phones and microwave ovens operate in or near the 2.4 GHz ISM band and emit RF energy that overlaps with WLAN channels, producing co-channel and adjacent-channel interference. Option B is not a factor because Category 6a cabling is a wired Ethernet medium for the backhaul and does not radiate or attenuate wireless signals in a way that affects RF propagation. Option D is not a factor because PoE+ (802.3at) is simply a power-delivery standard over Ethernet and does not cause RF attenuation or interference. Option E is not a factor because an LC-to-LC fiber patch cord carries optical signals for wired backhaul and is immune to RF interference and does not affect wireless signal quality.
Which THREE features are introduced or enhanced in WPA3 to improve wireless security compared to WPA2? (Choose THREE).
Explanation: WPA3 is the latest generation of Wi-Fi security, providing significant improvements over WPA2. It addresses several known vulnerabilities, such as offline dictionary attacks and the lack of forward secrecy. Understanding these enhancements is vital for technicians responsible for deploying modern, secure wireless networks that protect sensitive data from sophisticated threats.
A support technician is configuring a wireless access point for a small office. The office wants to allow guest devices to connect without exposing internal resources, while keeping employee traffic separated. Which feature should the technician configure on the access point?
Explanation: Mapping separate SSIDs to distinct VLANs provides logical separation between guest and employee traffic. The access point tags frames with the appropriate VLAN, and the wired network enforces policy between them. MAC filtering, SSID hiding, and shared-key encryption do not create separate network segments.
A network engineer is deploying a wireless network in a warehouse with metal shelving and forklifts. Users report intermittent connectivity and slow speeds. Which phenomenon is most likely causing the signal degradation?
Explanation: In a warehouse with metal shelving and moving forklifts, radio signals reflect off these surfaces, creating multiple paths to the receiver. This multipath interference causes signal fading, distortion, and intermittent connectivity. Channel overlap is a configuration issue, attenuation is gradual signal loss, and EMI from forklifts is less likely. Therefore, multipath interference is the most probable cause of the reported problems.
A small office has a single Cisco wireless router providing both employee and guest access. The manager wants guests to reach the internet but must not be able to reach the internal file server or the printer on the office LAN. Which feature should be enabled on the wireless router to meet this requirement?
Explanation: Guests need internet access without any path to internal resources. Placing guest traffic on a dedicated VLAN and applying an ACL that denies access to internal subnets enforces that boundary at the network layer. Encryption, MAC lists, and SSID hiding all control who joins the wireless network, not what an already-connected guest can reach, so only proper segmentation solves the problem.
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Practice all Wireless LAN and WLC ScenariosWireless questions on the CCNA cover 802.11 standards (ax/ac/n), WPA3, SSID/BSSID concepts, WLC architecture (FlexConnect, local switching), and client connectivity troubleshooting. These are mostly MCQ and multi-select. These appear throughout the 100-150 and require you to apply your knowledge, not just recall facts.
Cisco doesn't publish an exact breakdown, but scenario-based questions (especially exhibit and command-output formats) make up a significant portion of the 100-150. Practicing each scenario type ensures you're ready for any format.
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