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Free APC DU0-001 Practice Exam with Questions & Answers | Set: 4

Questions 31

To maximize the effectiveness of data center supply air distribution, where should perforated tiles in a raised floor environment be placed?

Options:
A.

In the hot aisle only

B.

In the cold aisle only

C.

In equal amounts in both hot and cold aisles

D.

Primarily in the hot aisle with some on the perimeter of room

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Questions 32

Which two concepts does "NCPI agility" address? (Choose two.)

Options:
A.

Ability to virtualize

B.

Ability to oversize

C.

Ability to reconfigure

D.

Speed of deployment

Questions 33

Which management technique provides the ability to set and assign owner roles?

Options:
A.

Incident management

B.

Availability management

C.

Accountability management

D.

Owner resolution management

Questions 34

What is the primary purpose of data center physical security?

Options:
A.

To monitor activities of data center employees

B.

To set up proper firewalls and avoid hacking of computers

C.

To keep unauthorized people out of places they do not belong

D.

To research the background of individuals who visit the data center

Questions 35

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

Options:
A.

Glycol

B.

Diesel

C.

Gasoline

D.

Methanol

E.

Natural gas

Questions 36

What is the definition of reliability?

Options:
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.

Questions 37

What are three power distribution components found in data centers? (Choose three.)

Options:
A.

Ground loop

B.

Branch circuit

C.

Metered outlet strip

D.

Power distribution unit (PDU)

E.

Valve regulated lead acid (VRLA) battery

Questions 38

What is a function of a transformer in a line interactive UPS?

Options:
A.

To increase the power factor as the load increases

B.

To increase harmonics by stepping down the output

C.

To regulate output voltage as the input voltage varies

D.

To provide low impedance for switched mode power supplies

Questions 39

Which standard was written for the protection of computer or data processing equipment?

Options:
A.

NFPA 71

B.

NFPA 72

C.

NFPA 74

D.

NFPA 75

Questions 40

What is the advantage of a three-phase power source versus a single-phase power source?

Options:
A.

Three-phase power delivers balanced voltage across all three-phases.

B.

Three-phase power delivers up to three times the amount of power of a single-phase power source.

C.

Three-phase power cancels neutral harmonics on the 3rd, 5th, and 7th orders where Single-phase power does not.

D.

Three-phase power does not require a neutral; therefore, you can attain increased levels of efficiency over single-phase power.