최신 CDCS 무료덤프 - EXIN EPI Certified Data Centre Specialist

문제1

When installing a raised floor, can we use a spirit level bar to level the floor?

A. Yes, but spirit level bars can only be used in the vertical plane.

B. Yes, using a spirit level bar for raised floors higher than 40 cm is preferred.

C. Yes, spirit level bars can be used as long as their length is longer than 60 cm/2 ft (the size of a typical raised floor tile).

D. No, because using a spirit level bar, a measurement error will be transferred from pedestal to pedestal.

정답: D

설명: (DumpTOP 회원만 볼 수 있음)

문제2

Which formula is correct for a three-phase system?

A. Phase-to-Phase Voltage = 1 # (Phase-to-Neutral Voltage × 1.732)

B. Phase-to-Phase Voltage = 1 # (Phase-to-Neutral Voltage ÷ 1.732)

C. Phase-to-Phase Voltage = Phase-to-Neutral Voltage ÷ 1.732

D. Phase-to-Phase Voltage = Phase-to-Neutral Voltage × 1.732

정답: D

설명: (DumpTOP 회원만 볼 수 있음)

문제3

You want to make cooling more effective by setting cold aisle temperature to 4 °C (39 °F). Is this acceptable?

A. Yes, but only if cooling systems can maintain this continuously

B. No, intake air must be exactly 20 °C (68 °F)

C. No, 4 °C (39 °F) is below the allowable ASHRAE range

D. Yes, as long as dewpoint doesn't go below -9 °C (16 °F)

정답: C

설명: (DumpTOP 회원만 볼 수 있음)

문제4

The air intake of the mission-critical server at the top of the rack is measuring 25 °C/77 °F.
Is this acceptable?

A. Yes, this is allowed according to the standards and guidelines

B. No, the temperature needs to be 20 °C/68 °F

C. As long as it does not exceed the average server room temperature of 38 °C/100 °F

D. Depends on the ANSI/TIA-942 Rating the data center needs to comply with

정답: A

설명: (DumpTOP 회원만 볼 수 있음)

문제5

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)

문제6

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 H#O.
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)

문제7

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

A. Replace with normal glass

B. Split into two equal parts with silicone

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

D. Split into two equal parts with aluminum frame

정답: C

설명: (DumpTOP 회원만 볼 수 있음)

문제8

A computer room is fitted with a hypoxic-based fire suppression system. On what principle does it work?

A. It removes the heat from the fire

B. It removes the fuel from the fire

C. It lowers the oxygen levels in the room

D. It uses water as an extinguisher

정답: C

설명: (DumpTOP 회원만 볼 수 있음)

최신 CDCS 무료덤프 - EXIN EPI Certified Data Centre Specialist

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