Data Center University Associate Certification (DU0-001) Practice Test

Questions # 61:

What percentage of electricity used to power IT equipment is typically converted into heat?

Options:

85%

90%

95%

99%

Questions # 62:

What is the main function of a UPS?

Options:

To provide battery back-up power to IT equipment

To regulate the voltage of power going to the racks

To distribute power from the transformer to the racks

To supply diesel-generated power when the utility is out

Questions # 63:

Which statement correctly defines direct current (DC)?

Options:

Only high voltage is used.

Electricity flows in one direction only.

The circuit does not have multiple paths.

The circuit is directly attached to the power source.

Questions # 64:

Which statement describes a three-phase power source?

Options:

Two voltage sine wave references consisting of two "hot" wires and a ground

One voltage sine wave reference consisting of a "hot" wire, a neutral wire, and a ground

Three voltage sine wave references consisting of one "hot" wire, one neutral wire, and a ground

Three voltage sine wave references consisting of three "hot" wires and accompanying neutral and a ground

Questions # 65:

What does GFCI mean?

Options:

Ground Fault Circuit Interrupter

General Facilities Cooling Index

Gaussian Filter Charge Indicator

Grounded Flaw Circuitry Installed

Questions # 66:

In which heat rejection system is the compressor located outside of the CRAC unit?

Options:

Chilled water systems

Water cooled systems

Glycol cooled systems

Air cooled self-contained systems

Questions # 67:

Which is an example of a row-oriented cooling architecture?

Options:

Each cooling unit works to cool the load through a raised floor plenum.

Each cooling unit is ceiling mounted and targets cool air to the cold aisles.

Each cooling unit works directly to cool the heat load of a specific equipment rack.

Each cooling unit is placed along the data center wall and cools the general air space.

Questions # 68:

A network-critical physical infrastructure (NCPI) Management strategy should incorporate what information at the rack level to ensure reliable IT equipment operation? (Choose two.)

Options:

Rack "U" space

Network switches

Individual branch circuits

Rack access to equipment

Questions # 69:

Which three fuels are used to power a generator? (Choose three.)

Options:

Glycol

Diesel

Gasoline

Methanol

Natural gas

Questions # 70:

What function do patch panels serve in a data center?

Options:

They convert Internet protocols (IP).

They convert copper signals into fiber optic light signals.

They serve as a demarcation point where ends of bulk cable converge.

They improve the data cable signal capacity from 100 Base-T to 10 Gigabyte Ethernet.

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