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그렇게 많은 IT인증덤프공부자료를 제공하는 사이트중DumpTOP의 인지도가 제일 높은 원인은 무엇일가요?그건DumpTOP의 제품이 가장 좋다는 것을 의미합니다. DumpTOP에서 제공해드리는 Cisco인증 350-101덤프공부자료는Cisco인증 350-101실제시험문제에 초점을 맞추어 시험커버율이 거의 100%입니다. 이 덤프만 공부하시면Cisco인증 350-101시험패스에 자신을 느끼게 됩니다.
질문 # 74
What is used for measuring gain on a Wi-Fi antenna?
정답：D
설명：
Wi-Fi antenna gain is measured in dBi, meaning decibels referenced to an isotropic radiator.
Cisco's Wireless RF Reference Guide states that antennas have gain measured in decibels relative to isotropic gain, or dBi, and further explains that antenna gain is a ratio comparing the gain of a specific antenna to a theoretical isotropic antenna. Cisco's RF design documentation also defines dBi as the power gain rating of antennas, where real antennas are compared to an isotropic antenna that radiates the same power density equally in all directions.
Option B is therefore the correct selection, although the technically precise phrase is decibels relative to isotropic, abbreviated dBi. Antenna length can influence resonance and design, but it is not the measurement unit for gain. Voltage against dBm is incorrect because dBm references absolute power relative to 1 milliwatt, not antenna gain. Analog/digital signal blending is unrelated to RF antenna performance.
질문 # 75
A network administrator at a marketing company manages a Cisco Catalyst 9800 Series Wireless Controller running Cisco IOS XE 17.x. The WLAN named XYZ-Guest is set up for visitors, and the administrator wants to implement a web authentication (WebAuth) portal using an external server to manage guest access. To ensure seamless and secure guest authentication, the controller must be configured to use an external WebAuth server for the WLAN. The administrator must configure the XYZ-Guest WLAN to use an external WebAuth server with a parameter map named webauth-ext. Which set of Cisco IOS XE commands must be used?
정답：C
설명：
On a Cisco Catalyst 9800 WLC, the WLAN is entered with the wlan command, and the WebAuth parameter map is applied under the WLAN using the security web-auth parameter-map command so the guest WLAN uses the configured external WebAuth portal settings.
질문 # 76
What does an elevated noise floor indicate in an RF environment?
정답：C
설명：
An elevated noise floor indicates degraded RF conditions and directly reduces wireless link reliability. Cisco defines the noise floor as the ambient RF noise level, expressed in dBm, below which received signals are unintelligible. Cisco also defines SNR as the ratio of signal strength to the noise floor, meaning that when the noise floor rises, the usable separation between the desired signal and background RF energy decreases.
For a receiver to decode frames reliably, the received signal must remain sufficiently above the noise floor. Cisco site-survey guidance states that RF signals must be higher than the noise floor to be detectable as valid useful signals, and gives the common design example of -67 dBm signal with a -92 dBm noise floor to maintain 25 dB SNR. When the noise floor is elevated, SNR drops, clients experience more retries, lower modulation rates, reduced throughput, and possible disconnects. Cisco's high-density wireless guidance states that raised noise floor lowers SNR, translating to lower speeds and higher airtime utilization. Options B, C, and D describe unrelated timing, spectrum- planning, or bandwidth-demand concepts.
질문 # 77
A persistent network issue is impacting connectivity for workstations in a training lab when connecting to a lab SSID. Wireless logs show clients never receive a DHCP offer when trying to obtain an IP address. The APs are operating in Local mode. Network monitoring systems indicate optimal signal quality and radio performance, VLAN assignments for the affected SSID have been configured, and all clients are affected. Which action resolves the issue?
정답：C
설명：
The fault domain is DHCP forwarding, not RF, client-side addressing, or AP discovery. Cisco explains that when a wireless client associates, it sends a DHCP Discover broadcast, and depending on AP mode, that traffic is either forwarded through the WLC or passed to the next hop. Cisco further states that if no DHCP server exists in the client's local Layer 2 domain, the router or SVI for the client VLAN must forward DHCP discovery traffic using an IP helper address.
Because the APs are in Local mode, client traffic is centrally switched through CAPWAP to the WLC, where the client VLAN/SVI path must correctly relay DHCP toward the DHCP server.
Cisco's Catalyst 9800 DHCP configuration guide shows DHCP relay configuration under the client VLAN SVI by entering the IPv4 helper address, and the CLI example uses ip helper- address <ip-address> to forward UDP broadcasts such as DHCP requests.
Option C resolves the issue because all clients are affected and none receive a DHCP offer, indicating the DHCP Discover is not reaching the DHCP server or the offer is not returning through the relay path. DHCP option 43 is for AP controller discovery, not client DHCP addressing.
질문 # 78
What is a characteristic of gain in wireless antenna design?
정답：B
설명：
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.
질문 # 79
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350-101시험패스 가능한 공부문제: https://www.dumptop.com/Cisco/350-101-dump.html