CDCS無料問題集「EXIN EPI Certified Data Centre Specialist」

質問 1

A computer room with a raised floor has been designed with racks in a hot/cold aisle setup.
What should you recommend for the placement of down-flow air conditioners?

（A）Air conditioners perpendicular to (at the end of the row of) the Cold-Aisle

（B）Air conditioners should always be placed at both sides of each row of racks

（C）Air conditioner placement has no influence on cooling effectiveness and efficiency. Hence, they can be placed at any convenient location.

（D）Air conditioners perpendicular to (at the end of the row of) the Hot-Aisle

正解：A 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 2

What is the advantage or disadvantage of using MPO (Multi-fiber Push On)/pre-terminated fiber?

（A）It is a very flexible system as it can be used for both copper cables and optical fiber cables.

（B）There is no advantage, as it creates additional heat load in the data center.

（C）There is no advantage, as it cannot be used with OM4 optical fiber cables.

（D）It speeds up installation and provides an easy upgrade to transmission speeds up to 40 Gbit/s -100 Gbit/s.

正解：D 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 3

What is a significant difference between a halocarbon gas-based fire suppression system and an inert gas-based fire suppression system?

（A）Halocarbon gas works on the basis of heat removal and inert gas works on the basis of oxygen reduction.

（B）Inert gas has smaller-sized gas containers than halocarbon gas.

（C）Inert gas harms the environment and halocarbon gas does not.

（D）Halocarbon gas works on the basis of oxygen reduction and inert gas works on the basis of heat removal.

正解：A 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 4

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

（A）No, the temperature needs to be 20 °C/68 °F

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

（C）Yes, this is allowed according to the standards and guidelines

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

正解：C 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 5

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

（A）Tiles with air deflectors or louvers do not allow for a flexible cooling solution.

（B）Tiles with air deflectors or louvers will reduce the cooling capacity of the tile.

（C）Tiles with air deflectors or louvers can be very heavy.

（D）Tiles with air deflectors or louvers can only be used to cool storage equipment.

正解：C 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

質問 6

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

（B）No cause could be determined as the CFM/CMH of the air conditioning equipment is not stated

（C）The exhaust temperature is exceeding the ASHRAE recommended values

（D）Dust inside the server causing issues with convection-based heat transfer

正解：D 解答を投票する

解説: (JPNTest メンバーにのみ表示されます)

CDCS 無料問題集「EXIN EPI Certified Data Centre Specialist」

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