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

Questions # 21:

What describes the ratio of watts to volt-amps?

Options:

Frequency

Power factor

Actual power

Apparent power

Questions # 22:

Seismic enclosures are designed to protect installed equipment from what hazards?

Options:

Earthquakes

Liquids

Dusty environments

Fire or excessive heat

Questions # 23:

To formulate proper cooling patterns in data centers, how should racks be arranged?

Options:

Alternating hot and cold aisles

Organizing individual rows by application

Placing hot spots in the corners of the room

Segmenting hot aisles in one room and cold aisles in another

Questions # 24:

Typical data centers function to what percent of their capacity?

Options:

10%

33%

66%

75%

Questions # 25:

What would be a comprehensive strategy for protecting the most critical racks of a data center?

Options:

Key access to the critical racks

Video camera pointed directly at critical racks

Iris scanner at the entrance to the data center

Nested security perimeters with racks at the innermost level

Questions # 26:

What is the purpose of the alternator as a primary component of a standby generator?

Options:

Starts the prime mover upon loss of utility power

Controls output voltage reference produced by the prime mover

Converts mechanical energy from the prime mover into electrical current

Maintains constant RPM of the prime mover under a variety of conditions by adjusting the fuel that feeds the prime mover

Questions # 27:

Which three key components make up a three-phase stationary power distribution unit? (Choose three.)

Options:

Rectifier

Panel board

Input transformer

Rack mount bracket

Input circuit breaker

Questions # 28:

Which type of application typically utilizes an enclosure wider than 600 mm?

Options:

Network cabling

Storage disk arrays

Rack-mounted UPS

Shelf-mounted tower servers

Questions # 29:

What is an advantage of ceiling mount systems?

Options:

They plug into wall outlets

They provide the highest capacity units

They rapidly redeploy to a different location

They do not take away from IT equipment space

Questions # 30:

What is the highest cost UPS configuration?

Options:

System + system

Parallel redundant

Isolated redundant

Distributed redundant

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