CDCS資格認定 & CDCS復習過去問
すべての顧客の誠実な要件を考慮して、CDCSテスト問題は「品質第一とクライアント最高」の原則に沿って持続し、高品質の製品を豊富に備えた候補者に約束します。試験での99％の合格率、購入前の無料試用版など、CDCSトレーニング資料の多数の利点がよく知られています。お客様の観点から、当社のCDCSテスト問題では、すべての候補者の要求が最優先事項となっています。最適なCDCS模擬テストに対するお客様の信頼とフィードバックを大切にしています。
今の競争が激しい社会にあたり、あなたは努力して所有したいことがあります。IT職員にとって、CDCS試験認定書はあなたの実力を証明できる重要なツールです。だから、EXIN CDCS試験に合格する必要があります。それで、弊社の質高いCDCS試験資料を薦めさせてください。
EXIN CDCS復習過去問 & CDCSテスト内容
CDCS試験問題は正式に認定されています。 私たちEXINの目標は、効率的な学習スタイルで、EXIN EPI Certified Data Centre Specialist関連するCDCS試験に合格できるようにすることです。 CDCSトレーニング資料の品質と手頃な価格により、当社の競争力は常に世界のリーダーです。 CDCS学習教材は、他のトレーニング教材よりも高い合格率を持っているため、完全な結果を得ることができると確信しています。 CDCS試験問題を使用すると、PassTest成功が保証されます。
EXIN EPI Certified Data Centre Specialist 認定 CDCS 試験問題 (Q29-Q34):
質問 # 29
It is assumed that EMF shielding material must be installed as the EMF levels coming from the transformer room into the computer room are measured at 100mG. The transformer room is approximately 10 meters away from the computer room and is separated by a corridor. You can assume that no physical issues are present for installing shielding material at any area/location.
Where should you recommend the shielding material to be installed?
正解：D
解説：
EMF shielding is most effective when installed close to the source of the EMF, which in this case is the transformer room. Shielding at the source contains the magnetic fields before they spread, minimizing exposure throughout the facility, including the computer room.
Detailed Explanation:
Placing shielding close to the EMF source minimizes the area impacted by electromagnetic interference, as it reduces the distance over which the EMF can spread. Shielding materials near the source can absorb or redirect EMF, providing the most effective reduction of EMF levels in adjacent spaces, like the data center.
EPI Data Center Specialist References:
EPI data center training advises positioning shielding close to the EMF source to contain fields more effectively and reduce interference in critical areas. This method is more efficient and cost-effective, as it limits the spread of EMF from the point of origin.
質問 # 30
You need to determine the strategy for the cooling audit. All the servers are based on a front-to-rear (F-R) airflow design.
Which location for the temperature/humidity measurement should you recommend for the audit?
正解：C
解説：
For a cooling audit in a data center, it is essential to measure temperature and humidity where air enters the servers to accurately assess cooling performance. In this case, since all servers have a front-to-rear (F-R) airflow design, measuring at the front/intake of the server will provide a precise understanding of the cooling conditions that the equipment is experiencing.
Detailed Explanation:
Servers with a front-to-rear airflow design draw in cool air from the cold aisle at the front, which is then exhausted into the hot aisle at the rear. By measuring temperature and humidity 50 mm/2 inches from the front intake, you gather data on the air conditions right before it enters the servers, providing an accurate representation of the cooling environment as it directly impacts the equipment.
Measuring in the cold aisle at the front intake ensures that the readings reflect the actual conditions of the incoming air that the servers depend on for effective cooling. This approach is consistent with best practices for maintaining thermal conditions in a data center, as it helps confirm that the cooling systems are delivering air within the required temperature and humidity specifications.
EPI Data Center Specialist References:
According to the EPI Data Center Specialist curriculum, the optimal placement for temperature and humidity sensors is at the intake of the equipment in the cold aisle, as it directly correlates to the environmental conditions affecting the servers. This positioning allows for a more effective audit of cooling performance, which is critical for maintaining the reliability and efficiency of the data center's operations.
質問 # 31
You have three UPS systems connected in parallel. The UPS systems have an imbalance in the load sharing of approximately 20%.
What should you recommend?
正解：D
解説：
An imbalance in load sharing between UPS systems connected in parallel can often result from unequal cable lengths to the common busbar. If the cabling from each UPS to the busbar varies significantly in length, it can lead to differences in impedance, resulting in uneven load distribution. Ensuring that cable lengths are consistent helps to balance the load sharing across the UPS systems.
Detailed Explanation:
Parallel UPS systems rely on uniform impedance to share loads evenly. Differences in cable lengths cause variations in resistance, leading to one or more UPS units carrying a disproportionate share of the load. Standardizing cable lengths ensures equal impedance, which promotes balanced load sharing and prevents one UPS from being overburdened, thus maintaining overall system reliability.
EPI Data Center Specialist References:
EPI guidelines recommend checking cable lengths when load imbalances occur in parallel UPS configurations. Ensuring equal lengths is a common method to resolve impedance issues that affect load distribution, which is critical for the stable operation of redundant power systems.
質問 # 32
A 5kW (power consumption) server keeps crashing with the message 'temperature too high'.
The intake temperature is measured at 25 °C/77 °F and a relative humidity (RH) level of 50%.
The exhaust temperature is 29 °C/84 °F and 45% RH.
The raised floor is providing an adequate amount of CFM/CMH at a reasonable velocity.
The pressure under the raised floor is approximately 25 Pa/0.1 inch H₂O.
Analyze the situation and indicate what the most likely cause is for this server to crash.
正解：B
解説：
The server's repeated overheating despite adequate intake and exhaust temperatures suggests that dust buildup inside the server may be impeding heat transfer. Dust accumulation can obstruct airflow within the server, insulate components, and disrupt the convection-based cooling systems that regulate internal temperatures, leading to overheating and potential hardware failures.
Detailed Explanation:
While the intake and exhaust temperatures appear within acceptable ranges, internal dust can reduce airflow and impede cooling efficiency, causing internal components to overheat despite seemingly normal ambient conditions. Regular cleaning and maintenance are critical for preventing dust-related issues, especially in high-powered equipment like a 5kW server.
EPI Data Center Specialist References:
EPI emphasizes regular maintenance to prevent dust buildup in data center equipment. Dust can significantly impact cooling efficiency and lead to overheating, which underlines the importance of routine cleaning for optimal server performance.
質問 # 33
You are working with a customer who requires a guarantee that THDi levels coming from the UPS should not exceed more than 3% THDi. Furthermore, he wants to run a power-efficient data center. The UPS has a 6-Pulse SCR/Thyristor based rectifier. The current load on the UPS is approximately 80%. The customer indicates they are not expecting any changes on the ICT infrastructure for the next 3 years.
What should you recommend?
正解：D
解説：
Given the customer's requirement to limit Total Harmonic Distortion (THDi) to below 3% and the presence of a 6-pulse SCR/Thyristor-based rectifier, an active harmonic filter is the best solution. A 6-pulse rectifier typically generates higher harmonic distortion, often exceeding 3%, especially under substantial loads like 80%. An active harmonic filter dynamically monitors and compensates for harmonic distortion, effectively reducing THDi and supporting a more power-efficient operation, aligning with the customer's energy efficiency goals.
Detailed Explanation:
Passive harmonic filters can reduce harmonics but are less effective at maintaining low THDi levels under varying loads. Active filters offer real-time correction and can achieve lower THDi levels than passive filters, especially in systems with fluctuating loads or where strict harmonic limits are required. Installing an active harmonic filter will ensure compliance with the specified THDi limits and optimize power quality.
EPI Data Center Specialist References:
EPI guidance on power quality management recommends active harmonic filters for environments where strict THDi levels are necessary. Active filters offer better control over harmonic levels, supporting both compliance and operational efficiency.
質問 # 34
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当社のCDCS学習教材を購入したこれらの人々を支援するために、当社が提供するCDCS学習教材の更新と更新を担当する当社の専門家チームがあります。弊社からCDCS学習教材を購入したいお客様と永続的かつ持続可能な協力関係を築くことをお約束します。 CDCS学習教材を購入する場合、重要な情報を見逃すことはありません。さらに、更新システムが無料であることをお約束します。
CDCS復習過去問: https://www.passtest.jp/EXIN/CDCS-shiken.html
一方、CDCS試験の質問を使用すると、EXIN EPI Certified Data Centre Specialist試験の焦点が失われることを心配する必要はありません、我々PassTestの開発するEXINのCDCSソフトはあなたに一番速い速度でEXINのCDCS試験のコツを把握させることができます、ここで、お勧めたいのは弊社のCDCS試験参考書です、有効で正確な内容、我々のCDCS復習過去問 - EXIN EPI Certified Data Centre Specialistトレーニング資料はPDF版、ソフト版とオンライン版が全部あり、お客様の需要に応じて提供されます、CDCS試験トレントの内容は同じですが、クライアントごとに異なるバージョンが適しています、EXIN CDCS資格認定 専門の担当者が解決に役立ちます。
その様子で答えなんてわかったけど、それでも訊いてみたくなった、科学はこの社会的土壌の中で根付き、発芽し、成長することはできません、一方、CDCS試験の質問を使用すると、EXIN EPI Certified Data Centre Specialist試験の焦点が失われることを心配する必要はありません。
プロフェッショナルCDCS資格認定 & 資格試験のリーダー & 初段EXIN EXIN EPI Certified Data Centre Specialist
我々PassTestの開発するEXINのCDCSソフトはあなたに一番速い速度でEXINのCDCS試験のコツを把握させることができます、ここで、お勧めたいのは弊社のCDCS試験参考書です、有効で正確な内容。
我々のEXIN EPI Certified Data Centre Specialistトレーニング資CDCS料はPDF版、ソフト版とオンライン版が全部あり、お客様の需要に応じて提供されます。