DU0-001 Online Practice Questions and Answers

What is an advantage of choosing a four-post open frame rack over a two-post open frame rack?

A. Lower cost

B. Smaller footprint

C. Easier assembly

D. Increased strength

Which UPS topology switches to batteries and turns on the inverter when the utility fails?

A. Rotary

B. Standby

C. Delta conversion

D. Double conversion

How many amps is a NEMA 5-30R receptacle rated to support?

A. 5 amps

B. 15 amps

C. 20 amps

D. 30 amps

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

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.

Click the Exhibit.

In the exhibit, which component is represented by the box with the arrow?

A. Alternator

B. Switchgear

C. Sub feed panel

D. Automatic transfer switch

Which two should be used as a basis for determining the UPS redundancy configuration? (Choose two.)

A. Voltage level

B. Cost of downtime

C. Availability requirements

D. Size of the electrical load

Your data center has a 75 kW load and is located in a building that would require long distances between the indoor and outdoor cooling units. There is no cooling tower available and reducing capital cost is a priority.

Which heat rejection method should be used?

A. Chilled water system

B. Water cooled system

C. Glycol cooled system

D. Air cooled split system

Which is the most common high speed data network found in data centers?

A. FDDI

B. Arcnet

C. Ethernet

D. Token ring

Which three are network topologies? (Choose three)

A. Star

B. Ring

C. Tree

D. Wheel

E. Pyramid

When developing a management strategy, how long do organizations typically focus on fully implementing each management process before moving on to the next?

A. One to three months

B. Three to six months

C. Six to nine months

D. Nine to twelve months