300-445受験練習参考書 & 300-445資格試験

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Cisco 300-445 認定試験の出題範囲：

トピック	出題範囲
トピック 1	インサイトとアラート：この領域では、ネットワークの状態とエンドユーザーのエクスペリエンス要因に基づいてアラートルールを設定する方法について説明します。ステークホルダー向けのメトリックの選択、アラートの検証、容量計画のためのネットワーク最適化の推奨などが含まれます。
トピック 2	データ収集の実装：この領域では、インフラストラクチャとエンドユーザーデバイス全体にエンタープライズエージェントとエンドポイントエージェントを展開することに重点を置いています。ThousandEyesとMeraki Insightsを使用したネットワーク、DNS、音声、Web、エンドポイントテストの設定に加え、合成Webテストと認証方法の実装についても扱います。
トピック 3	データ分析：この分野は、パケット損失、輻輳、ルーティング、ジッターなどのネットワーク問題に加え、エンドデバイスの問題診断を網羅しています。また、Webアプリケーションのパフォーマンス分析や、DDoS攻撃、DNSハイジャック、BGPハイジャックなどのセキュリティ脅威の特定も含まれます。
トピック 4	プラットフォームとアーキテクチャ：この領域では、監視エージェントの種類と配置、アクティブ監視とパッシブ監視、およびThousandEyes WAN Insightsの理解について扱います。Ciscoプラットフォームの統合、メトリックのベースライン、およびビジネス要件に基づいた適切な統合方法と保証プラットフォームの選択についても取り上げます。

>> 300-445受験練習参考書 <<

300-445資格試験、300-445英語版

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Cisco Designing and Implementing Enterprise Network Assurance 認定 300-445 試験問題 (Q31-Q36):

質問 # 31
SNMP data indicates that a wireless access point is experiencing high channel utilization and increased retransmissions. What optimization would you recommend to improve voice call quality for users on this access point?

A. Change the access point to a different, less congested channel
B. Disable all non-voice traffic on the wireless network
C. Implement strict admission control for all wireless clients
D. Increase the transmit power of the access point

正解：A

解説：
In wireless network assurance, high channel utilization and increased retransmissions are clear indicators of RF interference or over-subscription. Retransmissions are particularly damaging to voice call quality because they introduce significant jitter and late-arrival packet loss that the jitter buffer cannot overcome.
The recommended optimization is tochange the access point to a different, less congested channel(Option B). This directly reduces the competition for airtime (Channel Utilization) and the likelihood of collisions from neighboring access points (Co-Channel Interference), which in turn lowers the retransmission rate.
Modern wireless controllers usingRadio Resource Management (RRM)often automate this, but a manual adjustment based on SNMP telemetry is a valid operational fix.
Other options are technically flawed:
* Option A:Increasing transmit power oftenincreasesinterference and channel utilization for surrounding cells, making the problem worse for everyone.
* Option C:Disabling all non-voice traffic is an extreme measure that is rarely feasible in a real business environment.
* Option D:Admission control limits thenumberof users but doesn't solve the underlying issue of poor channel health for those already connected.

質問 # 32
What is the primary purpose of integrating ThousandEyes with Meraki?

A. To enhance cloud security and compliance
B. To monitor external applications and services from SD-WAN sites
C. To manage user access policies and permissions
D. To deploy Endpoint Agents for VPN connectivity monitoring

正解：B

解説：
TheDesigning and Implementing Enterprise Network Assurance (300-445 ENNA)framework highlights the integration between ThousandEyes and Cisco Meraki as a solution for "cross-domain assurance".5The primary purpose of this integration is tomonitor external applications and services from SD-WAN sites (Option B).
In a distributed Meraki environment, IT teams often struggle with visibility into the "Internet as a WAN," where performance issues may occur outside the local network perimeter. By embeddingThousandEyes Enterprise Agentsnatively withinMeraki MX appliances, organizations can bridge the gap between internal LAN metrics and external service health.6This integration allows for proactive monitoring of SaaS platforms (like Microsoft 365, Salesforce, and Webex) and other public-facing dependencies using synthetic probes. It complements the nativeMeraki Insight (MI), which provides passive monitoring of real user traffic, by adding active path visualization and hop-by-hop analysis across the Internet.
Key advantages of this integration include:
* One-Click Activation:Enabling the ThousandEyes agent directly from the Meraki Dashboard without additional hardware.7
* Pre-configured Templates:Using built-in test templates for common SaaS applications to accelerate troubleshooting.8
* Isolation of Fault Domains:Quickly determining if a user's lag is caused by a local Wi-Fi issue (via Meraki wireless metrics) or an ISP routing problem (via ThousandEyes path data).9 While ThousandEyes does provide visibility for VPN and security, Options A, C, and D are not theprimary focus of the specific Meraki-ThousandEyes integration architecture, which is centered on extending application performance assurance to distributed branch locations.

質問 # 33
What type of alert rule is configured based on the state of BGP routing table in network assurance?

A. Threshold alert
B. Performance alert
C. Protocol alert
D. Security alert

正解：C

解説：
A protocol alert rule is configured based on the state of BGP routing table in network assurance to detect and mitigate potential routing issues.

質問 # 34
What is a recommended deliverable for IT operations based on network assurance data interpretation?

A. Compliance audit
B. Network topology diagram
C. Performance dashboard
D. Security incident report

正解：C

解説：
A performance dashboard is a recommended deliverable for IT operations based on network assurance data interpretation, providing insights for proactive network management.

質問 # 35
An engineer works for a restaurant chain that runs the Cisco ThousandEyes Enterprise Agent on Meraki MX devices. The engineer must set up monitoring for a web application that requires users to authenticate with the Basic authentication scheme. Which action must the engineer take to configure the monitoring for this application?

A. Set up a Page Load test with Basic HTTP authentication enabled.
B. Set up a Web Transaction test with Basic HTTP authentication enabled.
C. Set up an HTTP Server test with Basic HTTP authentication enabled.
D. Set up a Web Transaction test that fills the credentials in the interactive form and submits the form.

正解：C

解説：
Basic authentication is handled at the HTTP protocol level, not inside a browser or interactive form.
ThousandEyes HTTP Server tests directly support Basic Auth by allowing credentials to be passed in the request header.
Transaction and Page Load tests require browser interaction, but Basic Auth does not-it is purely an HTTP header exchange.

質問 # 36
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