当社Ciscoでは、多くの分野の専門家を雇用して300-110学習ガイドを作成しているため、学習教材の品質を安心してご利用いただけます。 さらに、300-110試験問題のガイダンスに基づいて試験の準備をすることで、Xhs1991近い将来昇進する機会を増やし、給与を引き上げることができます。 したがって、Designing Cisco Wireless Networks試験を受ける準備ができたら、300-110学習教材を利用できます。 次の受益者になりたい場合、何を待っていますか？ 300-110学習教材を購入してください。
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Wired and Wireless Infrastructure | 30% | - Design radio management - Design wireless bridging (mesh) - Logical infrastructure requirements - Physical infrastructure requirements - Design for data, voice, video, location - Design high-density wireless networks |
| Topic 2: Wireless Site Survey | 25% | - Material attenuation and its design effects - Layer 1 site survey analysis - Planning tools and network metrics evaluation - Predictive site survey - Post-deployment site survey - Collect design requirements and evaluate constraints - Pre-deployment site survey |
| Topic 3: WLAN High Availability | 20% | - Design controller high availability - Design AP high availability |
| Topic 4: Mobility | 25% | - Site Tags - Optimize client roaming - Validate mobility tunneling - Design mobility groups |
効果的な勤勉さが結果に正比例することは誰もが知っているので、長年の勤勉な作業によって、専門家は頻繁にテストされた知識を参考のために300-110実践資料に集めました。したがって、300-110トレーニング資料は、彼らの努力の成果です。 300-110の実践教材を使用することで、以前に想像していた以上の成果を絶対に得ることができます。 300-110の実際のテストを選択した顧客から収集された明確なデータがあり、合格率は98〜100％です。したがって、成功を収めるチャンスは、当社の資料によって大幅に向上します。
質問 # 75
An educational organization recently deployed an anchored WLAN and has a high number of client connections at any given time that stream video. The wireless infrastructure includes two Cisco 9800 WLCs.
To prevent web traffic being slow, an engineer must configure the deployment to prevent excessive fragmentation of the client data. Which configuration must the engineer apply?
正解：A
解説：
In an anchored WLAN deployment, client traffic is encapsulated within CAPWAP mobility tunnels between the foreign WLC (where the AP joins) and the anchor WLC (in the DMZ or designated network segment).
This tunneling adds encapsulation overhead - CAPWAP/mobility tunnel headers consume a portion of the available MTU on the transport path. When video streaming clients generate large TCP segments, these segments may exceed the effective MTU of the mobility tunnel path, causing IP fragmentation at the WLC or along the path to the anchor. Fragmentation significantly degrades throughput and increases CPU overhead for high-volume video traffic. The correct solution is TCP MSS Clamping - reducing the Maximum Segment Size value advertised in TCP SYN packets so that TCP endpoints negotiate a segment size remaining below the fragmentation threshold. The Cisco 9800 WLC supports TCP MSS adjustment, which intercepts TCP handshake packets and rewrites the MSS option to a value accounting for CAPWAP tunnel overhead. Setting matching MTUs (Option A) does not prevent fragmentation if the effective tunnel MTU is lower than the client segment size. Increasing the MTU (Option B) is often constrained by physical infrastructure. Setting the DF bit (Option D) would cause packets to be dropped rather than fragmented.
Reference: WLSD Study Guide - Anchored WLAN Design, CAPWAP Mobility Tunnel MTU, TCP MSS Clamping.
質問 # 76
A customer wants a network engineer to design a Cisco wireless solution that will have redundancy through SSO and LAG. APs in the executive office must reassociate to the WLC as soon as possible in the event of a failure. The WLCs are located in a remote data center. The head office uses a WAN for connectivity with the data center. Which priority must be incorporated in the design to be assigned to the executive APs?
正解：A
解説：
Cisco WLC AP Failover Priority governs the order in which APs are processed when a WLC recovers and APs begin re-associating. The priority levels are: Critical, High, Medium, and Low.
During recovery situations, the WLC will accept and process AP join requests in order of priority -- Critical priority APs are processed first, before all other priority levels. In a deployment where the WLC is located in a remote data center connected via WAN, the join process for all APs is slower due to WAN latency and potential bandwidth constraints. Under these conditions, assigning Critical priority to executive office APs ensures they are at the front of the processing queue and restore service before lower-priority APs. The executive office designation implies business- critical operations requiring the fastest possible wireless restoration -- a requirement that directly maps to the Critical priority level.
質問 # 77
A network engineer is designing a new wireless network. The network must include these requirements: * optimized performance * avoid interference * availability in high-density areas * roaming Which two approaches must be taken? (Choose two.)
正解：A、D
解説：
The design requirements - optimized performance, interference avoidance, high-density support, and roaming capability - collectively point to a dual-band strategy using narrow channel widths. For 5 GHz operation (Option A), 20 MHz channels are the correct choice for high-density and campus-scale deployments. The 5 GHz band has significantly more non-overlapping channels compared to 2.4 GHz (up to
24 non-overlapping 20 MHz channels in UNII-1, UNII-2, and UNII-3), enabling a robust channel reuse plan with minimal co-channel interference and excellent roaming cell separation. Wider 5 GHz channels (Options C and E - 80 MHz and 40 MHz) would consume multiple channel blocks, dramatically reducing the number of available non-overlapping channels and increasing co-channel interference in dense deployments. For 2.4 GHz operation (Option B), 20 MHz channels are mandatory - there are only three non-overlapping 20 MHz channels (1, 6, 11) in the 2.4 GHz band. Using 40 MHz channels in 2.4 GHz (Option D) eliminates all non- overlapping channel separation, causing massive co-channel interference and is universally contraindicated in enterprise designs. Reference: WLSD Study Guide - Channel Planning, High-Density Design, Frequency Band Selection.
質問 # 78
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.)
正解：B、D
解説：
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.
質問 # 79
A customer is building a new warehouse facility that has only its foundation and perimeter walls built. The building will be complete in the next eight months. The customer needs a detailed bill of materials and costs for a wireless network that must support RF scanners throughout the warehouse.
How should the survey be performed?
正解：B
解説：
A predictive survey (also called a virtual or model-based survey) is the appropriate and only feasible methodology for a facility that does not yet physically exist in its complete form. Since the warehouse has only its foundation and perimeter walls, it is impossible to conduct any form of physical (active or passive) survey of the complete environment. A predictive survey uses architectural floor plans imported into a tool such as Ekahau Site Survey, where the engineer defines attenuation areas representing planned materials and structures: concrete block walls, steel shelving racks, metallic surfaces, and other warehouse-specific obstructions. The software models RF propagation through these defined attenuation values, enabling accurate AP placement planning, antenna selection, and channel planning without physical access to the complete facility. The output is a validated bill of materials with AP counts, models, and associated infrastructure requirements.
質問 # 80
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