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| Section | Weight | Objectives |
|---|---|---|
| Mobility | 25% | - Optimize client roaming - Site Tags - Validate mobility tunneling - Design mobility groups |
| Wireless Site Survey | 25% | - Predictive site survey - Layer 1 site survey analysis - Post-deployment site survey - Pre-deployment site survey - Material attenuation and its design effects - Planning tools and network metrics evaluation - Collect design requirements and evaluate constraints |
| Wired and Wireless Infrastructure | 30% | - Logical infrastructure requirements - Design high-density wireless networks - Design for data, voice, video, location - Design wireless bridging (mesh) - Physical infrastructure requirements - Design radio management |
| WLAN High Availability | 20% | - Design controller high availability - Design AP high availability |
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NEW QUESTION # 110
A hospital has a Cisco Catalyst 9800 Series Wireless Controller in an SSO solution deployed in the primary data center. The hospital plans to increase redundancy in the wireless environment.
Management decides to deploy an extra Catalyst 9800 WLC offsite to another data center on a different subnet. A WAN link connects the data centers with a firewall at both ends. Which two design approaches must the engineer take to ensure that the APs can fail over? (Choose two.)
Answer: A,B
Explanation:
For APs to be able to fail over between a primary SSO pair in one data center and a standalone WLC in a remote data center connected via WAN with firewalls, two design requirements must be met. First, a mobility tunnel must be created between the wireless controllers (Option A). The mobility tunnel enables the controllers to exchange mobility control messages, peer information, and eventually AP context when failover occurs. Without the mobility tunnel, the remote WLC is not recognized as a valid failover target by the APs through the mobility domain. Second, UDP ports 16666 and 16667 must be open through the firewalls between the controllers (Option D).
UDP port 16666 is used for mobility control traffic and UDP port 16667 is used for mobility data traffic -- both must be permitted through the firewalls at both data centers for the mobility tunnel to establish and function.
NEW QUESTION # 111
A small customer has a legacy autonomous mode Wi-Fi deployment that provides a low-density and low- capacity service. The customer wants to update and replace this deployment with the latest Wi-Fi technology but has a fixed budget that will pay only to replace the APs. Which architectural controller deployment model suits this requirement?
Answer: D
Explanation:
Cisco ' s Embedded Wireless Controller (EWC) architecture is the ideal solution for small deployments with strict budget constraints where only the access points can be replaced. EWC is a controller function that runs directly within the Cisco Catalyst 9100 Series access point itself - eliminating the need for a dedicated physical or virtual WLC appliance. The APs serve dual roles as both the wireless radio infrastructure and the controller platform. The unified model (Option B) requires a dedicated hardware WLC such as the 9800 series, exceeding the customer ' s budget. Fabric (Option C) requires Cisco DNA Center and SD-Access infrastructure, making it cost-prohibitive for a small deployment. Cloud (Option D) requires ongoing subscription fees that may not fit a fixed one-time budget. EWC provides enterprise-grade features including centralized SSID management, RRM, and client mobility within the AP cluster - all without additional controller hardware investment. This makes it the canonical solution for SMB migrations from autonomous deployments. Reference: WLSD Study Guide - Controller Deployment Models, Embedded Wireless Controller Architecture, SMB and Branch Wireless Design.
NEW QUESTION # 112
An engineer is performing a passive survey report. The coverage heat map shows the entire site with all signal levels. To see only the desired coverage, which action must the engineer take?
Answer: D
Explanation:
To focus the coverage heat map on the desired coverage threshold, the engineer should use the RSSI slider to set the heat map to the desired cutoff filter. This action adjusts the display to show only the signal levels that meet or exceed the specified RSSI value, effectively filtering out weaker signals and highlighting areas with sufficient coverage. In Ekahau and similar survey tools, the RSSI slider provides a dynamic way to set minimum signal thresholds, allowing the engineer to quickly validate whether coverage meets design targets such as -67 dBm for voice or -70 dBm for data. Changing the color scheme (Option A) only modifies the visual representation without filtering data. The RSSI calibration tool (Option B) adjusts how the tool perceives signal levels, not the display filter. Filtering by AP (Option D) would remove APs from the view, potentially hiding coverage gaps. Reference: WLSD Study Guide - Post-Deployment Survey, Ekahau Heat Map Tools, RSSI Coverage Filtering.
NEW QUESTION # 113
How are mobility groups created, excluding mobility anchors?
Answer: D
Explanation:
Mobility groups are created by configuring each Wireless LAN Controller (WLC) to use the same mobility domain name (mobility group name) and defining each WLC as a peer in the static mobility members list of every other WLC in the group. This bidirectional configuration establishes the trusted peer relationship and enables WLCs to exchange client information, security credentials, and state data for seamless roaming. The same mobility group name on all WLCs creates a shared identity; the static peer list defines which controllers are trusted mobility partners and provides their management IP addresses and MAC addresses for tunnel establishment. Option A is incorrect because members should run compatible (ideally the same) software versions, not different ones. Option B is incorrect - all WLCs in a mobility group must use the same virtual IP address for proper roaming. Option D is incorrect - in an HA SSO pair, the pair presents as a single logical mobility entity, not as two separate peers. Reference: WLSD Study Guide - Mobility Group Configuration, Peer Configuration Requirements, Mobility Domain Architecture.
NEW QUESTION # 114
During a post-deployment site survey, issues are found with non-Wi-Fi interference. What should the engineer use to identify the source of the interference?
Answer: A
Explanation:
Cisco Spectrum Expert is a dedicated spectrum analysis tool designed to identify and analyze non-Wi-Fi interference sources at Layer 1. During a post-deployment site survey, it can detect interference from various devices such as cordless phones, Bluetooth devices, microwave ovens, video cameras, and other unlicensed RF emitters. The tool provides a visual representation of the RF environment across the frequency spectrum, allowing engineers to pinpoint the exact source of interference and characterize it by duty cycle, frequency, and interference pattern. A network analysis module (Option A) operates at Layer 2 and above, unable to detect non-802.11 RF emissions. Wireless intrusion prevention (Option B) detects rogue APs and 802.11 attacks but not Layer 1 RF noise. Wireshark (Option C) is a packet capture tool for Layer 2-7 analysis and cannot detect non-Wi-Fi RF energy. Reference: WLSD Study Guide - Layer 1 Spectrum Analysis, Post- Deployment Survey, Non-Wi-Fi Interference Identification.
NEW QUESTION # 115
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