Given:As the wireless network administrator for XYZ Company, you are planning to upgrade your aging wireless network infrastructure, as well as some clients, to support 802.11ac. In your research, you have discovered that your new wireless client devices and infrastructure are 802.11ac, WMM, and WMM-PS certified by the Wi-Fi Alliance. Some of your existing client devices are 802.11a/b/g devices that do not support WMM. Given this information, what scenario is possible when your company's employees begin using both types of client devices on the new WLAN?
Correct Answer: C
In environments where both WMM-PS (Wi-Fi Multimedia Power Save) certified and non-WMM-PS client devices coexist, disparities in performance and battery life can occur. WMM-PS enhances power-saving mechanisms by allowing devices to enter low-power states and schedule transmissions efficiently. Non- WMM-PS devices, lacking this capability, rely on traditional power-saving methods like PS-Poll, which are less efficient. As a result, WMM-PS devices benefit from improved battery life and performance, while non- WMM-PS devices may experience reduced efficiency. Reference: CWDP-305 Official Study and Reference Guide, Chapter on Designing for Specific Applications
Question 87
What type of standards-based encryption is used by office extension APs for the traffic tunnel?(Choose all that apply.) Response:
Correct Answer: A,E
CAPWAP and DTLS are the type of standards-based encryption used by office extension APs for the traffic tunnel. Office extension APs are wireless access points that can be deployed in remote locations and connect to a central wireless controller via a secure tunnel over the Internet. CAPWAP is the Control and Provisioning of Wireless Access Points protocol, which defines how the wireless controller and the office extension APs communicate and exchange control and data messages. DTLS is the Datagram Transport Layer Security protocol, which provides encryption and authentication for the CAPWAP tunnel. DTLS is based on TLS, but it uses UDP instead of TCP as the transport layer protocol, which makes it more suitable for real-time applications. DTLS protects the CAPWAP tunnel from eavesdropping, tampering, and replay attacks, and ensures the confidentiality and integrity of the wireless traffic. References: CWNP, CWDP Certified Wireless Design Professional Official Study Guide, Configure OEAP and RLAN on Catalyst 9800 WLC, Hardening Microsoft 365, Office 2021, Office 2019 and Office 2016
Question 88
What are the three biggest WLAN enterprise verticals?(Choose all that apply.) Response:
Correct Answer: B,C,E
Question 89
What kind of site survey helps you identify if roaming is working as designed?
Correct Answer: C
Active site surveys involve connecting to the WLAN and measuring performance metrics such as signal strength, throughput, and roaming behavior.This type of survey is essential to verify that clients can seamlessly roam between APs without connectivity issues. The CWDP-305 Official Study and Reference Guide highlights the role of active surveys in assessing the real- world performance of a WLAN, including the effectiveness of roaming configurations. Reference: CWDP-305 Official Study and Reference Guide, Chapter on Post-Design ValidationandTroubleshooting
Question 90
While configuring your site survey software for an upcoming manual survey project, you notice the configuration option for "Network Card Simul-ation". What is the purpose of such a feature and when would you use it?
Correct Answer: A
Comprehensive and Detailed Explanation: The "Network Card Simul-ation" feature in site survey software allows the simul-ation of RF data as if it were received by a specific client device.This is particularly useful for assessing uplink performance and understanding how different client devices, with varying antenna gains and sensitivities, would perform in the surveyed environment.By simulating different client types, network designers can ensure that the WLAN design accommodates the performance requirements of all intended client devices. Reference: CWDP-305 Official Study and Reference Guide, Chapter on Advanced Site Surveys
