What is the highest cost UPS configuration?

A. System + system

B. Parallel redundant

C. Isolated redundant

D. Distributed redundant

What is the purpose of grounding?

A. To protect against electric shock

B. To step down 208 V power to 120 V power

C. To maintain the voltage during neutral wire bonding

D. To provide a path for the Ground Fault Interrupt (GFI) circuit

What is the main function of a UPS?

A. To provide battery back-up power to IT equipment

B. To regulate the voltage of power going to the racks

C. To distribute power from the transformer to the racks

D. To supply diesel-generated power when the utility is out

What is the primary difference between double conversion and delta conversion UPS systems?

A. Double conversion UPSs require a 1.3X generator oversizing. Delta conversion UPSs require a 3X generator oversizing.

B. Double conversion UPSs are practical in size ranges from 0 - 20 kW. Delta conversion UPSs are practical in size ranges of 20 kW to 1 MW.

C. In a double conversion UPS, 100% of the power is converted from AC to DC and then again from DC to AC. In a delta conversion UPS, only the difference between input and output power is converted.

D. In a double conversion UPS, the transformer has a special ferro-resonant capability, which provides limited voltage regulation and output waveform shaping. In a delta conversion UPS, a standard transformer is used.

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

Which two statements describe the parallel redundant UPS configuration? (Choose two.)

A. It uses older and outdated technology.

B. The parallel redundant UPS configuration is not scalable.

C. If one UPS module goes down, the other UPS module(s) assumes the load.

D. Both modules must be the same design, manufacturer, rating, technology, and configuration.

Which can cause a swell or surge to occur in the data center's electrical system?

A. UPS failure

B. CRAC unit startup

C. Transformer failure

D. Sudden load reduction

What are three benefits of rack-oriented cooling architecture? (Choose three.)

A. It reduces CRAC fan power required.

B. It utilizes the entire rated CRAC capacity.

C. It eliminates the need for humidity control.

D. It is easy to deploy for high density applications.

E. It reduces the number of air conditioning devices.

Which suppression system is most common in existing data centers?"

A. Water sprinkler system

B. Halon total flooding system

C. Carbon dioxide total flooding system

D. Water mist mercury switch sensor system

A data center manager wants to purchase a reliable UPS and specifies an MTBF of one million hours. What are two reasons this specification is flawed? (Choose two.)

A. Assumptions are not stated.

B. No definition of failure is provided.

C. Manufacturers do not provide MTBF.

D. MTBF is not a measure of reliability.