CDCS-001 : Certified Data Centre Specialist (CDCS) 2025 Exam

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CDCS-001
Certified Data Centre Specialist (CDCS) 2025
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stion: 868
ch of the following is a purpose of the voltage regulator in a standby rator?
maintain a constant output voltage control the speed of the engine filter the output power
ll of the above wer: A
anation: The primary purpose of the voltage regulator in a standby rator is to maintain a constant output voltage, ensuring that the power lied to the data center is within the required specifications.
Que
Whi gene
1. To
2. To
3. To
4. A
Ans Expl
gene supp
Question: 869
What is the primary purpose of a data center's Uninterruptible Power Supply (UPS) system?
1. To provide emergency backup power
2. To condition and regulate electrical power
3. To distribute power to IT equipment
4. To monitor and control power consumption
Answer: A
stion: 870
ch of the following is a key component of the switchgear and distribut m in a data center?
ircuit breakers anelboards usways
ll of the above wer: D
anation: The switchgear and distribution system in a data center inclu us key components, such as circuit breakers, panelboards, and buswa h work together to distribute power safely and efficiently throughout t
Explanation: The primary purpose of a data center's UPS system is to provide emergency backup power in the event of a utility power outage or disruption. The UPS system is designed to seamlessly take over power delivery to critical IT equipment until backup generators or other power sources can be activated.
Que
Whi ion
syste
1. C
2. P
3. B
4. A
Ans
Expl des
vario ys,
whic he
facility.
Question: 871
What is the minimum required Tier level for a data center under the ANSI/TIA-
1. Tier I
2. Tier II
3. Tier III
anation: The ANSI/TIA-942 standard defines four Tier levels for data ers, with Tier I being the minimum requirement. Tier I data centers ha e path for power and cooling distribution, with no redundant compone er Tier levels (II, III, IV) introduce more redundancy and fault toleran res. Therefore, the correct minimum required Tier level under the I/TIA-942 standard is Tier I.
stion: 872
ch of the following is a key component of a data center's disaster reco
edundant power supplies iometric access controls
ackup and off-site data storage
Tier IV Answer: A
Expl
cent ve a
singl nts.
High ce
featu ANS
Que
Whi very
plan?
1. R
2. B
3. B
4. Liquid cooling systems Answer: C
Explanation: Backup and off-site data storage is a key component of a data center's disaster recovery plan. This ensures that critical data and systems can be restored from a remote location in the event of a disaster, allowing the data
Question: 873
Which of the following is NOT a requirement for the emergency power system in an ANSI/TIA-942 Tier IV data center?
edundant generator sets with automatic failover
edicated fuel storage capacity for 72 hours of continuous operation utomatic transfer switches to ensure uninterruptible power supply eparate electrical rooms for generator sets and UPS systems
wer: D
anation: The ANSI/TIA-942 standard does not require that the generat nd UPS systems be housed in separate electrical rooms. However, it d mmend that these critical electrical components be physically separate ove reliability and reduce the risk of a single point of failure.
stion: 874
is the minimum recommended fire resistance rating for the walls unding a data center's critical equipment area?
our
R
D
A
S
Ans
Expl or
sets a oes
reco d to
impr
Que What surro
1. 1 h
2. 2 hours
3. 3 hours
4. 4 hours
Answer: B
Explanation: The ANSI/TIA-942 standard requires a minimum fire resistance rating of 2 hours for the walls surrounding a data center's critical equipment
Question: 875
Which of the following represents the electrical load of a data center?
he total power consumption of the facility he total cooling capacity required
he total capacity of the backup power system ll of the above
wer: A
anation: The electrical load of a data center refers to the total power umption of the facility, which includes the power required for IT pment, cooling, and other supporting systems.
stion: 876
ch mounting type is best suited for high-density server deployments in enter?
T
T
T
A
Ans Expl
cons equi
Que
Whi a
data c
1. Rack-mounted
2. Floor-standing
3. Wall-mounted
4. Ceiling-mounted Answer: A
Explanation: Rack-mounted server deployments are best suited for high-density computing environments in data centers, as they provide a compact and efficient way to organize and cool the critical computing equipment.
Question: 877
is the purpose of implementing a hot aisle/cold aisle layout in a data er?
improve physical security and access control
enhance the redundancy and fault tolerance of the IT infrastructure simplify cable management and airflow optimization
increase energy efficiency and reduce cooling costs wer: D
anation: The primary purpose of implementing a hot aisle/cold aisle la ata center is to increase energy efficiency and reduce cooling costs. B ting the hot exhaust air from the cool supply air, the HVAC system c ate more effectively and efficiently.
stion: 878
What cent
1. To
2. To
3. To
4. To
Ans
Expl yout
in a d y
isola an
oper
Que
What is the primary purpose of the grounding system in a data center?
1. Provide backup power
2. Dissipate electrical charges
3. Monitor power quality
4. Distribute power to racks
Answer: B
stion: 879
ch of the following is a key consideration when designing the cable agement system in a data center?
nsuring easy access and organization of cables
inimizing the risk of electromagnetic interference (EMI) roviding adequate space for future cable expansions
ll of the above
wer: D
anation: When designing the cable management system in a data cent onsiderations include ensuring easy access and organization of cables mizing the risk of electromagnetic interference (EMI), and providing uate space for future cable expansions. Effective cable management is al for maintaining the data center's operational efficiency, scalability, all reliability.
Explanation: The main purpose of the grounding system in a data center is to provide a safe path to dissipate and divert any unwanted electrical charges or static electricity, helping protect against potential equipment damage or safety hazards.
Que Whi man
1. E
2. M
3. P
4. A
Ans
Expl er,
key c ,
mini adeq
cruci and
over
Question: 880
Which of the following is not a recommended requirement for the monitoring and control system in an ANSI/TIA-942 data center?
1. Centralized building management system
2. Real-time monitoring of critical infrastructure
3. Automated notification of system failures
anation: The ANSI/TIA-942 standard recommends the following rements for the monitoring and control system in a data center: centra ing management system, real-time monitoring of critical infrastructur utomated notification of system failures.
stion: 881
ch of the following is not a common service level metric for data cent ge performance?
atency hroughput vailability ackup duration
wer: D
anation: Backup duration is not a common service level metric for dat
Onsite staffing for manual system control Answer: D
Expl
requi lized
build e,
and a
Que
Whi er
stora
1. L
2. T
3. A
4. B
Ans
Expl a
center storage performance, as it is more related to data protection and availability rather than storage performance.
Question: 882
Fill in the blank: The in a direct water cooling system for a data center is used to monitor and control the water flow, pressure, and temperature throughout the system.
1. Water treatment system
2. Heat exchanger
3. Power and control system
wer: C
anation: In a direct water cooling system for a data center, the power a ol system is responsible for monitoring and controlling the water flo ure, and temperature throughout the system, ensuring optimal cooling ormance and preventing any potential issues.
stion: 883
ch of the following is NOT a common power type provided to data ers?
tility grid power ackup generator power inetic energy storage
Water distribution system Ans
Expl nd
contr w,
press perf
Que
Whi cent
1. U
2. B
3. K
4. Solar power Answer: C
Explanation: Kinetic energy storage, such as flywheels, is not a common primary power type provided to data centers. The more common power types are utility grid power, backup generator power, and sometimes renewable
sources like solar power.
Question: 884
he expected maximum power consumption he availability of natural gas supply
he scalability and flexibility to accommodate future growth and chang he proximity to residential areas
wer: C
anation: Scalability and flexibility to accommodate future growth and ges are key considerations when designing a data center's network structure. This ensures that the network can adapt to the evolving nee ata center and its operations.
stion: 885
ch of the following is not a recommended best practice for data center ng?
Which of the following is a key consideration when designing a data center's network infrastructure?
1. T
2. T
3. T es
4. T
Ans Expl
chan
infra ds of
the d
Que Whi cabli
1. Use cable trays or ladders to manage cabling
2. Separate power and data/signal cables
3. Use cables with the minimum required length
4. Implement a centralized cabling system Answer: D
Explanation: Recommended data center cabling best practices include using cable trays/ladders, separating power and data/signal cables, and using cables with the minimum required length. A centralized cabling system is not a recommended best practice, as it can introduce single points of failure.
ch of the following is NOT considered an "other physical security met ata center?
encing ighting
urveillance cameras ntrusion detection systems
wer: D
anation: Intrusion detection systems are considered a physical security od, not an "other physical security method." Fencing, lighting, and eillance cameras are examples of "other physical security methods" th e used in a data center.
Question: 886
Whi hod"
in a d
1. F
2. L
3. S
4. I
Ans Expl
meth
surv at
can b
Question: 887
What is the purpose of the ASHRAE environmental guidelines for data centers?
1. To ensure energy efficiency in data center operations
2. To establish recommended temperature and humidity ranges for data center equipment
3. To provide guidelines for the design and construction of data centers
4. All of the above
Answer: B
bility and longevity.
stion: 888
ch of the following is not a requirement for the telecommunications nce room in an ANSI/TIA-942 data center?
inimum size of 100 square feet (9.3 square meters) edicated air conditioning system
edundant power and cooling systems nsite backup generator
wer: D
anation: The ANSI/TIA-942 standard specifies the following require he telecommunications entrance room in a data center: minimum size
Explanation: The ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers) environmental guidelines for data centers are primarily intended to establish recommended temperature and humidity ranges for data center equipment. These guidelines help ensure the optimal operating conditions for the data center's IT infrastructure and promote equipment
relia
Que
Whi entra
1. M
2. D
3. R
4. O
Ans
Expl ments
for t of
100 square feet (9.3 square meters), dedicated air conditioning system, and redundant power and cooling systems. However, it does not require an onsite backup generator in the telecommunications entrance room, which is the correct answer.

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