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APC DU0-001 - Data Center University Associate Certification

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Total 324 questions

What are the three basic principles of identification from LEAST secure (1) to MOST secure (3)?

A.

(1) what you know, (2) what you have, (3) who you are

B.

(1) what you know, (2) who you are, (3) what you have

C.

(1) what you have, (2) who you are, (3) what you know

D.

(1) what you have, (2) what you know, (3) who you are

A UPS system consists of three modules in a parallel redundant configuration. Each module is rated to provide 200 kW of power. If the electrical load grows from 350 kW to 420 kW, what will happen?

A.

The UPS system will not provide any additional power beyond 400 kW.

B.

The UPS system will reach an overload state and switch to its static bypass.

C.

The UPS system's response will vary depending on the rate of electrical load growth.

D.

The UPS system will continue to support the load and become a capacity configuration.

Which method of heat transfer causes electromagnetic waves?

A.

Radiation

B.

Convection

C.

Conduction

D.

Evaporation

What defines a delta to wye transformer?

A.

Takes in three-phases and ground; outputs three-phases and ground

B.

Takes in three-phases, neutral, and ground; outputs three-phases and ground

C.

Takes in three-phases and ground; outputs three-phases, neutral, and ground

D.

Takes in three-phases, neutral, and ground; outputs three-phases, neutral, and ground

What is the actual vertical hole spacing (center-to-center) based on the EIA-310 standard for one mounting unit or U?

A.

25.40 mm (1 inch)

B.

50.80 mm (2 inches)

C.

38.10 mm (1.5 inches)

D.

44.45 mm (1.75 inches)

Which scenario illustrates a data center's agility?

A.

A data center is built out to final design capacity.

B.

A data center is designed with one hour of runtime.

C.

A data center is designed with interchangeable power distribution.

D.

A data center is configured with 50% AC power and 50% DC power in anticipation of loads.

What is the definition of reliability?

A.

The fraction of time a system is unable to perform its intended function.

B.

The likelihood that a system failure will occur for a specified time range.

C.

The ability of a system to perform its required functions for a specified period of time.

D.

The degree to which a system is accessible when required for use at an instant in time.

What describes the number of times AC current is switched back and forth over a period of 1 second?

A.

Voltage

B.

Frequency

C.

Amperage

D.

Power factor

Which statement correctly defines direct current (DC)?

A.

Only high voltage is used.

B.

Electricity flows in one direction only.

C.

The circuit does not have multiple paths.

D.

The circuit is directly attached to the power source.

Which method transfers heat by electromagnetic waves?

A.

Radiation

B.

Convection

C.

Conduction

D.

Evaporation