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質問 1：
What is the advantage or disadvantage of using MPO (Multi-fiber Push On)/pre-terminated fiber?
A. It speeds up installation and provides an easy upgrade to transmission speeds up to 40 Gbit/s -100 Gbit/s.
B. There is no advantage, as it cannot be used with OM4 optical fiber cables.
C. It is a very flexible system as it can be used for both copper cables and optical fiber cables.
D. There is no advantage, as it creates additional heat load in the data center.
正解：A
解説: (Pass4Test メンバーにのみ表示されます)
質問 2：
The electrical diagram of the data center shows the following UPS configuration and has a load of 80 kW.
What is the set-up in this data center?
A. 2(N+1)
B. (N+1)-(N+1)
C. N+N(+1)
D. 2+N+1
正解：A
解説: (Pass4Test メンバーにのみ表示されます)
質問 3：
The location of a data center is just above the Arctic Circle (North Pole). The outside air temperature is never above 21°C/70°F.
Taking energy efficiency as the highest priority, which cooling system should you recommend?
A. Standard air conditioning units, as spares might not be readily available
B. Airside economizer
C. Any cooling system can be efficient because the outside air temperature will not influence the temperature of the air intake of the ICT equipment
D. Waterside economizer
正解：B
解説: (Pass4Test メンバーにのみ表示されます)
質問 4：
A data center scores Rated-3 in mechanical, Rated-4 in electrical, and Rated-2 in architectural.
What is the overall Rating of this data center when the Rating is based on the ANSI/TIA-942?
A. Rated-4 since electrical is more important than mechanical and architectural
B. Rated-2 since that is the lowest rating received
C. Rated-4 since that is the highest rating received
D. Depends on the Rating scored in telecommunications
正解：B
解説: (Pass4Test メンバーにのみ表示されます)
質問 5：
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. Do not use fire-rated glass due to the size limit and replace it with normal glass.
B. Split the window in two equal parts fitted together with transparent silicon glue.
C. Split the window in two equal parts using an aluminum frame.
D. Split the window into parts smaller than specified as the maximum exposed area and ensure fire-rated frames are used.
正解：D
解説: (Pass4Test メンバーにのみ表示されます)
質問 6：
The UPS of a data center, with an ANSI/TIA-942 Rating-4, is installed with the rectifier connected to power feed A and the bypass/reserve line input connected to power feed B.
To which feed will the output of the UPS be synchronized?
A. Depends on the setting of the UPS, as the UPS can normally be set to either feed
B. Feed A
C. Feed B
D. The UPS will not synchronize to any of the feeds but use an internal clock to set the output voltage and frequency
正解：A
解説: (Pass4Test メンバーにのみ表示されます)
What is the advantage or disadvantage of using MPO (Multi-fiber Push On)/pre-terminated fiber?
A. It speeds up installation and provides an easy upgrade to transmission speeds up to 40 Gbit/s -100 Gbit/s.
B. There is no advantage, as it cannot be used with OM4 optical fiber cables.
C. It is a very flexible system as it can be used for both copper cables and optical fiber cables.
D. There is no advantage, as it creates additional heat load in the data center.
正解：A
解説: (Pass4Test メンバーにのみ表示されます)
質問 2：
The electrical diagram of the data center shows the following UPS configuration and has a load of 80 kW.
What is the set-up in this data center?
A. 2(N+1)
B. (N+1)-(N+1)
C. N+N(+1)
D. 2+N+1
正解：A
解説: (Pass4Test メンバーにのみ表示されます)
質問 3：
The location of a data center is just above the Arctic Circle (North Pole). The outside air temperature is never above 21°C/70°F.
Taking energy efficiency as the highest priority, which cooling system should you recommend?
A. Standard air conditioning units, as spares might not be readily available
B. Airside economizer
C. Any cooling system can be efficient because the outside air temperature will not influence the temperature of the air intake of the ICT equipment
D. Waterside economizer
正解：B
解説: (Pass4Test メンバーにのみ表示されます)
質問 4：
A data center scores Rated-3 in mechanical, Rated-4 in electrical, and Rated-2 in architectural.
What is the overall Rating of this data center when the Rating is based on the ANSI/TIA-942?
A. Rated-4 since electrical is more important than mechanical and architectural
B. Rated-2 since that is the lowest rating received
C. Rated-4 since that is the highest rating received
D. Depends on the Rating scored in telecommunications
正解：B
解説: (Pass4Test メンバーにのみ表示されます)
質問 5：
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. Do not use fire-rated glass due to the size limit and replace it with normal glass.
B. Split the window in two equal parts fitted together with transparent silicon glue.
C. Split the window in two equal parts using an aluminum frame.
D. Split the window into parts smaller than specified as the maximum exposed area and ensure fire-rated frames are used.
正解：D
解説: (Pass4Test メンバーにのみ表示されます)
質問 6：
The UPS of a data center, with an ANSI/TIA-942 Rating-4, is installed with the rectifier connected to power feed A and the bypass/reserve line input connected to power feed B.
To which feed will the output of the UPS be synchronized?
A. Depends on the setting of the UPS, as the UPS can normally be set to either feed
B. Feed A
C. Feed B
D. The UPS will not synchronize to any of the feeds but use an internal clock to set the output voltage and frequency
正解：A
解説: (Pass4Test メンバーにのみ表示されます)
Fukuda -
ゼロから丁寧に解説されていて解りやすい。この1冊に詰まっています。CDCS合格に必要な力を手に入れました。