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The power cable should be marked, at minimum, with which two pieces of information? (Choose two.)

A.

The source PDU

B.

The date installed

C.

The circuit breaker it is fed from

D.

The voltage capacity of the cable

What are the two features of enclosures that optimize adaptability when reconfiguring room layouts?

A.

Fan trays

B.

Perforated doors

C.

Field-reversible doors

D.

Quick-release side panels

Which statement describes a difference between fiber and copper cabling?

A.

Copper is generally less expensive than fiber for long runs.

B.

Copper is generally less expensive than fiber for short runs.

C.

Signals can be transmitted longer distances over copper than multi-mode fiber.

D.

Signals can be transmitted longer distances over copper than single-mode fiber.

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

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

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 three critical functions does grounding serve for a standby generator? (Choose three.)

A.

Prevents harmonics from affecting the IT load

B.

Provides a low-impedance electrical return path

C.

Prevents electrical shock during maintenance and/or repair

D.

Serves as a reference signal to the automatic transfer switch

E.

Ensures circuit breakers trip before electrical malfunctions develop into fires

Which method of heat transfer causes electromagnetic waves?

A.

Radiation

B.

Convection

C.

Conduction

D.

Evaporation

What are the four operating modes of CRAC units?

A.

Cooling, heating, saturation, humidification

B.

Cooling, heating, dehumidification, saturation

C.

Cooling, heating, humidification, dehumidification

D.

Cooling, humidification, dehumidification, saturation

Which external factor will affect the level of moisture in the data center?

A.

Outside temperature

B.

Outside barometric air pressure

C.

Outside air coming in to supplement cooling

D.

Chilled water being pumped down from the roof

What is a common concern when specifying the depth of a rack / enclosure?

A.

Seismic zone

B.

Server dimensions

C.

Available mounting units

D.

Ambient room temperature