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| Section | Weight | Objectives |
|---|---|---|
| Wired and Wireless Infrastructure | 30% | - Design high-density wireless networks - Logical infrastructure requirements - Design radio management - Physical infrastructure requirements - Design wireless bridging (mesh) - Design for data, voice, video, location |
| Wireless Site Survey | 25% | - Material attenuation and its design effects - Post-deployment site survey - Predictive site survey - Layer 1 site survey analysis - Planning tools and network metrics evaluation - Pre-deployment site survey - Collect design requirements and evaluate constraints |
| Mobility | 25% | - Design mobility groups - Validate mobility tunneling - Optimize client roaming - Site Tags |
| WLAN High Availability | 20% | - Design controller high availability - Design AP high availability |
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NEW QUESTION # 85
During a site survey for a new wireless deployment in a multifloor office building, an engineer must identify sources of interference and ensure optimal AP placement for 5 GHz coverage. While walking the site with a spectrum analyzer, the engineer notices periodic spikes in the noise floor on several channels and inconsistent signal strengths reported by the survey tool, despite visually unobstructed paths. Which action must the engineer take next to accurately assess and mitigate the Layer 1 interference?
Answer: B
Explanation:
Layer 1 interference analysis is foundational to the Cisco site survey methodology. When a spectrum analyzer reveals periodic noise floor spikes across multiple channels with no clear line-of-sight obstruction, the root cause is almost certainly a non-802.11 device - candidates include cordless phones, video cameras, microwave equipment, or radar systems triggering DFS events. The correct engineering response is systematic documentation: capture the time of occurrence, the specific frequency or frequency range, and the geographic location of the interference signature. This triangulation data enables correlation with physical devices present in the facility. Simply increasing transmit power (Option A) raises the noise floor for neighboring cells and worsens co-channel interference. Using WLC monitoring tools (Option B) is insufficient because the WLC cannot detect non-802.11 energy at Layer 1. Adjusting the channel plan (Option C) without fully characterizing the interferer is premature. Only Option D follows the correct Cisco survey methodology for Layer 1 analysis, leading to actionable AP placement adjustments. Reference: WLSD Study Guide - Wireless Site Survey Methodology, Layer 1 Spectrum Analysis, Interference Identification and Mitigation.
NEW QUESTION # 86
An enterprise is using two wireless controllers to support the wireless network. The data centre is located in the head office. Each controller has a corporate WLAN configured with different SSID names. The APs are installed using a round-robin approach to load balance the traffic. What should be changed in the configuration to optimize roaming?
Answer: B
Explanation:
To optimize roaming in a wireless network with multiple controllers, it is essential to use the same WLAN name (SSID) across all controllers. When SSIDs differ between controllers, clients perceive them as different networks and must perform a full re-association and re-authentication when roaming between APs managed by different controllers. This causes a roaming disruption equivalent to connecting to an entirely new network. By using identical SSID names on both controllers, clients can seamlessly roam between APs on different controllers within the same mobility group - the controllers exchange client state information via the mobility tunnel, enabling seamless handoff. In the scenario described, ' Copr-NET390595865WLC-1 ' and
' Copr-NET6837l638WLC-2 ' are different SSIDs, meaning clients cannot roam transparently between them.
Making both controllers broadcast the same SSID name (and using a mobility group to connect the controllers) resolves this. Reference: WLSD Study Guide - SSID Consistency Across Controllers, Inter- Controller Roaming, Mobility Group Configuration.
NEW QUESTION # 87
A customer purchases this Cisco equipment for a new branch office: * 20 Cisco Catalyst 9120 APs * five Catalyst 9130 APs * a single Catalyst 9300 Series Switch The customer wants to extend its existing wired and wireless fabric-enabled network to the branch office and manage all devices via a centrally deployed Cisco Catalyst Center (formerly DNA Center). Which Cisco Catalyst Center licenses are required for the branch office equipment?
Answer: B
Explanation:
Cisco Catalyst Center uses a tiered licensing model - Essentials and Advantage - applied to both switching and wireless infrastructure. To enable a fully fabric-enabled (SD-Access) deployment with centralized management, the Cisco Catalyst Advantage license is required across all device types. The Advantage tier unlocks Software-Defined Access fabric capabilities including macro and micro-segmentation, integration with Cisco ISE for policy enforcement, AI/ML-driven analytics via DNA Spaces and Assurance, and automated provisioning. The Essentials license provides only basic device management, inventory, and software image management - it does not unlock SD-Access fabric functionality. Since the branch design specifically extends an existing fabric-enabled network, the Essentials tier for either the switch or APs would create a licensing gap preventing full fabric participation. Options B, C, and D all create asymmetric licensing that would partially disable fabric capabilities. The correct design mandates Catalyst Advantage for the Catalyst 9300 switch and all 25 APs. Reference: WLSD Study Guide - Cisco Catalyst Center Licensing, SD- Access Design, Fabric-Enabled Wireless Architecture.
NEW QUESTION # 88
A customer designs a Cisco wireless environment to provide connectivity to employees and guests. The guest SSID must be configured on three anchor WLCs named Anchor1, Anchor2, and Anchor3 in a DMZ. The guest anchor priority must be configured to ensure that Anchor1 has the highest priority. Which priority level must be incorporated in the design for Anchor1?
Answer: A
Explanation:
In Cisco's guest anchor WLC deployment model, multiple anchor controllers can be configured in a DMZ to provide redundancy for guest WLAN traffic. The anchor priority value determines which anchor controller is preferred for establishing the guest mobility tunnel from the foreign WLC.
Cisco's anchor priority system assigns the highest preference to the lowest numerical priority value. Priority 1 is the highest priority, meaning the foreign WLC will prefer Anchor1 when establishing the CAPWAP mobility tunnel for anchoring guest client traffic. Priority 2 would be assigned to Anchor2, and Priority 3 to Anchor3, creating a deterministic failover hierarchy. If Anchor1 becomes unreachable, the foreign controller automatically falls over to Anchor2, then to Anchor3. Priority 0 is not a valid anchor priority value in the Cisco WLC configuration. This design pattern is critical for enterprise guest deployments where DMZ anchor redundancy must be maintained without manual intervention.
NEW QUESTION # 89
An engineer must identify the network requirements for a company that has a main office and 10 branch offices. The network must be able to support data, voice, video, and location tracking.
Which two factors must be considered? (Choose two.)
Answer: D,E
Explanation:
When designing a wireless network to support diverse services -- including data, voice, video, and location tracking -- across a distributed enterprise with a main office and 10 branch locations, the two primary design factors directly shaping the RF and capacity architecture are the number of wireless devices requiring access and the type of site where the survey will be performed. The device count (Option B) drives AP density, channel reuse planning, capacity modeling, and controller licensing requirements. Each service type -- particularly VoWLAN and video -- imposes strict per- client throughput and latency constraints that must be multiplied across the concurrent device population. The type of site (Option C) determines the survey approach, attenuation characteristics, coverage requirements, and antenna selection. A warehouse, hospital, or open- plan office each demands a fundamentally different RF design.
NEW QUESTION # 90
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