최신 CDCS 무료덤프 - EXIN EPI Certified Data Centre Specialist

문제1

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.

A. No cause could be determined as the CFM/CMH of the air conditioning equipment is not stated

B. The raised floor pressure is too low and/or the raised floor tile % opening is not adequate

C. Dust inside the server causing issues with convection-based heat transfer

D. The exhaust temperature is exceeding the ASHRAE recommended values

정답: C

설명: (DumpTOP 회원만 볼 수 있음)

문제2

The data center has been in operation for about 1 year and 2 months. The dust levels in the computer room are relatively high.
What is the most likely root cause?

A. Low pressure in the computer room

B. The cleaning crew is not doing their work properly

C. Floorboards are most likely not fitted correctly

D. Every computer room has high dust levels due to constant high-speed air movement

정답: C

설명: (DumpTOP 회원만 볼 수 있음)

문제3

The 'maximum exposed area' of the fire-rated glass is defined by the supplier as 3 sqm/32 sqft. The window area is 4 sqm/43 sqft.
What would be the best option?

A. Split the window in two equal parts fitted together with transparent silicon glue.

B. Split the window in two equal parts using an aluminum frame.

C. Split the window into parts smaller than specified as the maximum exposed area and ensure fire-rated frames are used.

D. Do not use fire-rated glass due to the size limit and replace it with normal glass.

정답: C

설명: (DumpTOP 회원만 볼 수 있음)

문제4

Which formula is correct?

A. Phase-to-Neutral Voltage = Phase-to-Phase voltage * 1.732

B. Phase-to-Neutral Voltage = (Phase-to-Phase voltage * 1.732) / Phase-to-Neutral Voltage

C. Phase-to-Neutral Voltage = Phase-to-Phase voltage /1.732

D. Phase-to-Neutral Voltage = Phase-to-Neutral voltage * 1.732

정답: C

설명: (DumpTOP 회원만 볼 수 있음)

문제5

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. It is not advisable to use such a system since it will reduce the lifetime of LED lighting.

B. At all times, the levels should allow for security cameras to function properly.

C. The system should not be based on motion detection as the lights might suddenly switch off while staff is still at work.

D. Security guards should perform regular inspections verifying the system works.

정답: B

문제6

What should you consider when using raised floor tiles with air deflectors or louvers?

A. Tiles with air deflectors or louvers will reduce the cooling capacity of the tile.

B. Tiles with air deflectors or louvers can only be used to cool storage equipment.

C. Tiles with air deflectors or louvers do not allow for a flexible cooling solution.

D. Tiles with air deflectors or louvers can be very heavy.

정답: D

설명: (DumpTOP 회원만 볼 수 있음)

최신 CDCS 무료덤프 - EXIN EPI Certified Data Centre Specialist

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