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CDCS Practice Questions

EXIN EPI Certified Data Centre Specialist

Last Update 3 days ago
Total Questions : 120

Dive into our fully updated and stable CDCS practice test platform, featuring all the latest EPI Data Centre exam questions added this week. Our preparation tool is more than just a Exin study aid; it's a strategic advantage.

Our free EPI Data Centre practice questions crafted to reflect the domains and difficulty of the actual exam. The detailed rationales explain the 'why' behind each answer, reinforcing key concepts about CDCS. Use this test to pinpoint which areas you need to focus your study on.

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Question # 11

A data center has its own power supply from the public utility and receives chilled water supply from the building owner.

What needs to be taken into consideration when calculating the PUE?

Options:

A.  

Nothing, as the chiller plant in the building also uses electrical power

B.  

You will need to take the value for COP of the chiller plant into consideration

C.  

You will need to take a weight factor of 0.4 for district chilled water into consideration

D.  

PUE calculations are not possible in shared buildings

Discussion 0
Question # 12

Which class of UPS is ideal for data centers?

Options:

A.  

VFD (Voltage and Frequency Dependent)

B.  

VI (Voltage Independent)

C.  

VFI (Voltage and Frequency Independent)

D.  

First class

Discussion 0
Question # 13

A battery bank has 800 Ah total capacity. How much charging current should the rectifier be able to supply?

Options:

A.  

40 A

B.  

60 A

C.  

80 A

D.  

160 A

Discussion 0
Question # 14

Is it allowed to make design changes during the implementation phase?

Options:

A.  

No, after a design freeze no further changes are allowed.

B.  

Any change is fine as long as it is within the scope of the project.

C.  

Yes, but only when time to implement is not exceeded.

D.  

Only when there is a strong business and/or technical justification.

Discussion 0
Question # 15

Maximum exposed area of fire-rated glass is 2 m², but the window is 5 m². What is the best option?

Options:

A.  

Replace with normal glass

B.  

Split into two equal parts with silicone

C.  

Split into two equal parts with aluminum frame

D.  

Split into smaller parts within 2 m² using fire-rated frames

Discussion 0
Question # 16

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.

Options:

A.  

12 Amperes

B.  

30 Amperes

C.  

60 Amperes

D.  

80 Amperes

Discussion 0
Question # 17

A data center requires an audit for ANSI/TIA-942 Rated-3 compliance. Will the network architecture be part of this audit?

Options:

A.  

No, as concurrent maintainability only applies to electrical and mechanical

B.  

No, only the type of cabling used will be audited

C.  

Yes, but only if network administration does not comply with ANSI/TIA-606

D.  

Yes, amongst other aspects the network architecture should be Rated-3 compliant with ANSI/TIA-942

Discussion 0
Question # 18

What is the main disadvantage of using a ToR (Top of Rack) design?

Options:

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.

Discussion 0
Question # 19

What is the effect of having a damper (in open position) construction in a raised-floor tile?

Options:

A.  

Dampers allow for a higher supply air temperature

B.  

Dampers increase the air volume by approximately 10%

C.  

Dampers reduce the air volume by approximately 10%

D.  

Dampers can be used when there is a high rate of temperature change in the computer room

Discussion 0
Question # 20

What is a disadvantage of hypoxic-based fire suppression?

Options:

A.  

Only usable in non-occupied areas

B.  

Only usable in rooms with sufficient air changes

C.  

Gas containers must be close to hazard

D.  

Only usable with positive pressure rooms

Discussion 0
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