CDCS Dumps – Pass Your Exin CDCS Certification Exam with Confidence
At Certs4Future, we provide you with the highest-quality CDCS dumps to ensure you are fully prepared for the certification exam. Here’s why our exam materials stand out:
Authentic Exam Dumps: Our CDCS exam dumps contain real, exam-specific questions and answers that you are likely to face on your exam.
Guaranteed Success: We are so confident in the quality of our materials that we offer a 100% pass guarantee. If you don’t pass the CDCS exam, we’ll provide a refund or free updated dumps.
Up-to-Date Content: Our CDCS dumps are continuously updated to reflect the latest exam changes and trends.
Detailed Explanations: Every question comes with an explanation to help you understand the reasoning behind the correct answers.
How to Use Our CDCS Dumps
Download the Dumps: After purchasing, you will receive instant access to download the CDCS exam dumps. You can study from any device, anywhere, anytime.
Start Practicing: Go through the practice questions and simulate the real exam environment. Track your progress and focus on areas that need improvement.
Take the Exam: After thorough preparation, take your CDCS exam with confidence, knowing that you’ve used the best possible resources.
Pass and Succeed: With our authentic CDCS dumps, you are guaranteed to pass the exam and earn your certification. If not, take advantage of our refund or free updated dumps.
Start Your CDCS Exam Preparation Today!
Don’t leave your certification success to chance! Get the authentic CDCS exam dumps from Certs4Future and start preparing today. With our expert-curated resources and pass guarantee, you'll be ready for the Exin CDCS exam in no time.
Related Exams
Exin CDCS Sample Question Answers
Question # 1
The logical overview of the data center looks as pictured. To what TIA-942 Rating is this design made
based on electrical only?
A. Rating - 4 B. Rating - 3 C. Rating - 2 D. Rating - 1
Answer: A
Explanation:
The electrical design shown in the diagrams represents a TIA-942 Rating-4 configuration. This design
includes full redundancy and fault tolerance, as demonstrated by the dual power distribution paths
from the utility supply to the critical loads. Each power distribution path is equipped with its own
UPS, ensuring that the ICT equipment and mechanical equipment have uninterrupted power in case
of any single point of failure.
Detailed
Explanation:
A Rating-4 data center requires two independent power paths that are fully redundant and capable
of supporting the load independently. In the diagrams:
There are dual feeds from the utility supply, each going through separate transfer switches and
power distribution paths.
Both paths have backup sources (+1) and serve critical components through separate UPS systems,
providing a completely redundant setup.
The design also includes redundant paths to the mechanical equipment and ICT equipment, which
further indicates the fault-tolerant characteristics of a Rating-4 infrastructure.
This setup allows for concurrent maintainability and ensures that no single failure in power
distribution or UPS can impact the data centers operation, which is characteristic of the highest
Tier/Rated-4 classification.
EPI Data Center Specialist References:
EPI guidelines confirm that TIA-942 Rating-4 requires full redundancy and fault tolerance for
electrical infrastructure, ensuring continuous operation even during maintenance o
Question # 2
You are allowed to use a calculator for this question. The total power consumption of the ICT
equipment in a rack is 6 kW. The equipment is traditional ICT equipment with a Delta-T of
approximately 11 °C / 20 °F. Calculate the approximate CFM required to cool the equipment in the
rack.
A. Approximately 1,500 CFM B. Approximately 1,000 CFM C. Approximately 500 CFM D. Approximately 160 CFM
Answer: B
Explanation:
To calculate the cooling airflow requirement for ICT equipment, you can use the formula:
CFM=Power (kW)×3160ΔT(°F)\text{CFM} = \frac{\text{Power (kW)} \times 3160}{\Delta T
(\text{°F})}CFM=ΔT(°F)Power (kW)×3160
For equipment consuming 6 kW with a Delta-T of 20°F:
This formula provides an estimate of the cubic feet per minute (CFM) of air required to cool the
equipment based on its power consumption and the temperature difference (Delta-T) between
intake and exhaust. The Delta-T represents the cooling effectiveness of the airflow.
EPI Data Center Specialist References:
EPI recommends using this calculation for determining airflow requirements in data centers,
ensuring that cooling systems are adequately sized to maintain equipment within safe temperature
limits.
Question # 3
What indicates the breaking capacity of a fuse or breaker?
A. Mechanical strength of the casing of a fuse or breaker. B. The maximum voltage, in case of an electrical surge, that the fuse or breaker can handle withoutbeing destroyed or causing an electric damaging arc. C. The current at which the device will trip. D. The current that a fuse or breaker is able to interrupt without being destroyed or causing anelectric damaging arc.
Answer: D
Explanation:
The breaking capacity of a fuse or breaker indicates the maximum current it can safely interrupt
without being damaged or creating a dangerous arc. This value is crucial for ensuring that the device
can handle fault conditions and prevent equipment damage or fire risks due to excessive current
flow.
Detailed
Explanation:
The breaking capacity, also known as the interrupting rating, ensures that the fuse or breaker can
safely handle fault currents up to a specified limit. Exceeding this capacity could result in the device
failing to interrupt the current, potentially causing hazardous conditions like electrical arcs.
EPI Data Center Specialist References:
EPI training underscores the importance of matching fuses and breakers with appropriate breaking
capacities for the anticipated fault levels in data centers to ensure reliable and safe operation.
Question # 4
The computer room has high levels of H2S gas contamination. What is the best option to resolve this
issue?
A. Vacuum the whole room using a HEPA/S-Class-based filter. B. Install air-scrubbers. C. Clean the room and racks with a damp/wet cloth. D. Provide more air changes per hour by adding more fresh air to the computer room.
Answer: B
Explanation:
High levels of H2S (hydrogen sulfide) gas contamination in a computer room are best addressed by
installing air-scrubbers. Air-scrubbers can effectively filter out contaminants, including corrosive
gases like H2S, ensuring clean air circulation and protecting sensitive IT equipment from potential
corrosion and damage.
Detailed
Explanation:
Air-scrubbers are designed to remove various airborne contaminants and are particularly useful in
environments where corrosive gases are present. These systems use filters or chemical reactions to
neutralize harmful substances, making them ideal for data centers that need to maintain high air
quality for equipment reliability.
EPI Data Center Specialist References
Question # 5
You are allowed to use a calculator for this question. A battery bank is rated at a total capacity of 600
Ah. Calculate how much charging current the rectifier should be able to supply as charging current.
A. 12 Amperes B. 30 Amperes C. 60 Amperes D. 80 Amperes
Answer: B
Explanation:
To determine the charging current for a battery bank, a general rule of thumb is that the charging
current should be 5% of the total battery capacity. For a battery rated at 600 Ah, this calculation
This ensures the battery is charged efficiently without overloading the rectifier or risking battery
damage.
Detailed
Explanation:
Battery charging current is typically set as a percentage of the battery's capacity to balance effective
charging with longevity and safety. A 5% charging rate is standard for lead-acid batteries, which
would be 30 Amperes for a 600 Ah battery bank.
EPI Data Center Specialist References:
EPI standards recommend calculating charging currents based on a percentage of the battery
capacity to ensure safety and efficiency, aligning with best practices for battery management in data
centers.
Question # 6
In order to save energy, you are going to install an automated system to switch off lights. What
should be taken into consideration when installing such a system?
A. Security guards should perform regular inspections verifying the system works. B. The system should not be based on motion detection as the lights might suddenly switch off while
staff is still at work. C. It is not advisable to use such a system since it will reduce the lifetime of LED lighting. D. At all times, the levels should allow for security cameras to function properly.
Answer: D
Explanation:
When installing an automated lighting system, especially in a security-sensitive area like a data
center, its essential to ensure that lighting levels support security camera functionality at all times.
Sufficient lighting is necessary for cameras to capture clear footage, ensuring continuous monitoring
and security regardless of occupancy.
Detailed
Explanation:
Automated lighting based on occupancy or time settings can reduce energy costs, but it must be
configured to maintain adequate illumination for surveillance. Security cameras require minimum
lighting levels to operate effectively, so lighting should be configured to avoid compromising security.
EPI Data Center Specialist References:
EPI emphasizes security and safety in data centers, advising that lighting systems should maintain
levels conducive to effective surveillance, ensuring operational security even when lights are
automatically controlled.
Question # 7
You are allowed to use a calculator for this question.A computer room has a net volume of approximately 2,500 m³ / 88,287 ft³.The temperature is 20 °C / 68 °F.The required design concentration is 7%.The S-Factor is 0.1359 (metric) / 1.885 (imperial).Calculate the amount of gas required for this computer room based on FM200. What is the correctweight?
A. Approximately 410 kg / 900 lbs B. Approximately 820 kg / 1,800 lbs C. Approximately 1,390 kg / 3,000 lbs D. Approximately 1,640 kg / 3,600 lbs
Answer: B
Explanation:
The amount of FM200 gas required can be calculated using the formula:
Weight of Gas=Net Volume×Design Concentration×S-Factor\text{Weight of Gas} = \text{Net Volume}
EPI instructs on using specific formulas and S-factors provided by manufacturers for each gas type,
ensuring that calculations reflect the correct concentration for the given room volume.
Question # 8
What should be considered when installing overhead data cabling?
A. To maintain minimum separation from power and ensure that the fire detection and suppressionsystems are not hindered. B. Copper data cabling should not be placed in metal cable trays. C. Optical fiber cabling should always be positioned on top of the copper cabling in the same cabletray to avoid damage to the sensitive optical fiber. D. All cabling should make sharp bends directly into the rack to avoid usage of additional space andblocking the airflow on top of the rack.
Answer: A
Explanation:
When installing overhead data cabling, its crucial to maintain minimum separation from power
cables to prevent electromagnetic interference. Additionally, cabling should be arranged so that it
does not obstruct fire detection and suppression systems, allowing for proper sensor function and
suppression agent dispersion in the event of a fire.
Detailed
Explanation:
Separation between power and data cabling minimizes the risk of interference and helps ensure
compliance with standards for signal integrity. Proper placement relative to fire suppression systems
ensures that any smoke or heat can be effectively detected, and suppression agents can be evenly
distributed without obstruction from cabling.
EPI Data Center Specialist References:
EPI guidelines emphasize maintaining adequate separation between power and data cables for
safety and performance and ensuring cabling does not interfere with essential safety systems in data
centers.
Question # 9
You are changing the design of the fire suppression system for your computer room from ahalocarbon fire suppression system into an inert-based fire suppression system. Could you use thesame formula to calculate the gas content for the gas?
A. No, there is a significant difference in the formula for the different types of fire suppression gases. B. Yes, as long as you take the difference between the net and gross volume into account. C. Yes, as long as you use the same units of measure, i.e., kg/m³ or lbs/ft³. D. Yes, as long as you change the 'S' factor of the formula to reflect the gas type used.
Answer: A
Explanation:
The formula used to calculate the gas content differs significantly between halocarbon and inertbased
fire suppression systems. Halocarbon systems function by absorbing heat, while inert systems
work by reducing oxygen levels. Due to these differences in fire suppression mechanisms, distinct
formulas are applied, factoring in the specific properties of each gas type and the required
concentration levels.
Detailed
Explanation:
Halocarbon systems like FM200 require a formula that accounts for the concentration needed for
cooling, while inert gases like nitrogen or argon need a formula that calculates the volume based on
oxygen displacement. As the design concentration and characteristics of these gases differ, its
essential to use the correct formula specific to the gas type.
EPI Data Center Specialist References:
EPI recommends consulting the specific design requirements and formulas provided by each gas
manufacturer when switching fire suppression systems to ensure the correct amount of gas is
deployed for effective fire suppression.
Question # 10
What is the main disadvantage of using a ToR (Top of Rack) design?
A. A single ToR (Top of Rack) switch is more expensive than an EoR (End of Row) switch. B. You need a separate rack to install all your ToR (Top of Rack) switches. C. There will be more switches to manage. D. A ToR (Top of Rack) switch has only optical interfaces.
Answer: C
Explanation:
A Top of Rack (ToR) design typically requires more switches because each rack has its own switch to
manage network connections, as opposed to End of Row (EoR) or centralized designs, which
consolidate switches. While ToR designs improve cabling efficiency and reduce latency, they also
increase the number of switches, thus raising management complexity and potentially increasing
capital and operational costs.
Detailed
Explanation:
In a ToR setup, each racks individual switch allows for quick access and streamlined cabling within
the rack. However, this setup means more devices to configure, monitor, and maintain, which can
increase administrative overhead and network management complexity.
EPI Data Center Specialist References:
EPI documentation notes that ToR designs can improve performance but also lead to increased
management needs due to the higher switch count, making them less ideal in environments where
simplified network management is prioritized.
Question # 11
What is the minimum requirement for the power feeds to the building for a Rated-3 data center
based on the ANSI/TIA-942 standard?
A. Two feeds coming from two different substations, one power company is not acceptable B. Two feeds coming from two different substations, one power company is acceptable C. Two feeds entering the data center building from one substation D. One feed from one substation split over two separated distribution boards in separate rooms
Answer: B
Explanation:
The minimum requirement for power feeds to a Rated-3 data center according to ANSI/TIA-942 is to
have two independent power feeds, which can come from two different substations provided by the
same power company. This ensures redundancy and concurrent maintainability, as each feed can
support the load independently during maintenance or failure of the other.
Detailed
Explanation:
The separation by two substations ensures resilience in case of a localized outage or substation
maintenance, aligning with Rated-3 requirements for uninterrupted operation. ANSI/TIA-942 permits
these feeds from a single utility provider as long as they are supplied from distinct substations.
EPI Data Center Specialist References:
EPI underscores the importance of dual power feeds from separate substations for Rated-3 facilities,
highlighting that the ability to draw from different substations aligns with redundancy requirements
for high availability.
Question # 12
A data center requires an audit to find out whether it conforms with ANSI/TIA-942 Rated-3(concurrently maintainable).Will the network architecture be part of this audit?
A. No, as concurrently maintainable only applies to electrical and mechanical (power and cooling). B. Yes, but only if the network administration does not comply with ANSI/TIA-606. C. Yes, amongst other aspects, the network architecture should be Rated-3 compliant with therequirements of ANSI/TIA-942. D. No, only the type of cabling used will be audited.
Answer: C
Explanation:
For a Rated-3 data center, network architecture is indeed a key component of the audit under
ANSI/TIA-942. This rating requires concurrent maintainability across all systems, including
telecommunications infrastructure. The network architecture must therefore meet specific
redundancy and reliability standards to ensure uninterrupted operations during maintenance or
failure of any single component.
Detailed
Explanation:
Rated-3 requirements extend beyond electrical and mechanical systems to include network
architecture. This ensures that telecommunications systems are also designed for concurrent
maintainability, thus contributing to overall uptime and resilience.
EPI Data Center Specialist References:
EPI endorses comprehensive assessments for Rated-3 facilities, emphasizing that network systems
must meet standards for redundancy and concurrent maintainability, which align with ANSI/TIA942s holistic approach to data center reliability.
