Cisco 350-101 Exam With Confidence Using Practice Dumps

The log is a Layer 2 802.1X authentication failure, not an AP join or WLAN encryption mismatch. In WPA3-Enterprise, the client authenticates with 802.1X/EAP through the configured AAA path. Cisco’s Catalyst 9800 WPA3 Enterprise configuration requires the necessary RADIUS or AAA servers and authentication lists before enabling WPA3 Enterprise, and the WLAN must reference the dot1x authentication list. Therefore, aCred Failreason points directly at the user/device credential validation path: the supplicant credentials, Active Directory identity source, RADIUS policy match, or RADIUS reachability.

Cisco’s 9800 802.1X configuration workflow also shows the controller defining a RADIUS server, adding it to a RADIUS group, creating a dot1x AAA authentication method list, and applying that list to the WLAN. It further recommends checking whether the RADIUS server is alive and using ISE RADIUS Live Logs to inspect authentication requests and results. Option A is wrong because the AP is not the supplicant in this WLAN client authentication event. Option B downgrades the security model and avoids 802.1X rather than fixing it. Option D addresses NAC behavior, not a credential authentication failure. Reference topics:Client Connectivity Configuration — WPA3-Enterprise, 802.1X/EAP, RADIUS authentication, and client authentication troubleshooting.

In wireless antenna design, gain refers to the measure of an antenna’s ability to focus energy in a particular direction compared to a reference antenna, usually an isotropic radiator. Gain does not generate additional power; instead, it redistributes radiated energy to increase signal strength in the intended direction, enhancing the effective range and performance of the wireless link. This directional amplification is crucial in both point-to-point and point-to-multipoint deployments, as higher gain antennas can concentrate RF energy to overcome path loss and improve received signal strength at the target. Option A describes system loss calculation, which relates to link budgets, not antenna gain. Option B is unrelated, as checksum figures are part of digital error detection in wireless frames. Option D pertains to environmental tolerance, not RF signal characteristics. In Cisco Wireless Core Technologies, antenna gain is considered during RF planning, coverage modeling, and site surveys to ensure optimal signal distribution, proper overlap, and minimal interference, particularly for high-density deployments. Using high-gain directional antennas in corridors or long hallways, for instance, improves coverage and throughput while minimizing interference outside the target area. Reference topics:RF Fundamentals — Antenna gain, directional radiation patterns, link budget, site survey planning.

Device sensitivity in a wireless environment refers to receiver sensitivity: the minimum RF signal level a client or AP radio must receive to successfully detect, demodulate, and decode a transmission. Cisco defines receiver sensitivity as the minimum signal power level, expressed in dBm or mW, required for a receiver to accurately decode a given signal. Cisco RF design guidance further states that sensitivity indicates the lowest received power before the receiver considers the signal unintelligible.

Therefore, option A is correct because sensitivity is fundamentally about the radio’s capability to process a received signal at low power levels. A more sensitive receiver can decode weaker frames, improving effective coverage and receive performance, provided the signal-to-noise ratio and interference conditions remain acceptable. Cisco also notes that individual device sensitivity determines how well a device can hear and demodulate RF energy, which directly affects contention behavior and WLAN performance in dense environments. Redundant gateways, beacon interval synchronization, and key refresh schedules are Layer 3 availability, 802.11 timing, and security-key management topics; they do not define RF receiver sensitivity. Reference topics:RF Fundamentals — receiver sensitivity, RSSI, dBm, SNR, demodulation, and WLAN coverage behavior.