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

Questions # 41:

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.)

Options:

Assumptions are not stated.

No definition of failure is provided.

Manufacturers do not provide MTBF.

MTBF is not a measure of reliability.

Questions # 42:

What are two circuit breaker types found in a building or data center? (Choose two.)

Options:

Thermal

Magnetic

Fast-acting

Photovoltaic

Questions # 43:

Hot aisle containment systems serve which primary function?

Options:

They enclose the top and bottom of racks to balance hot and cold air.

They enclose the rear of racks to ensure mixing of hot and cold air.

They enclose the front of racks to ensure reliable supply air delivery.

They enclose the rear of racks to prevent mixing of hot and cold air.

Questions # 44:

A planning challenge for data center managers is to find an NCPI solution that allows incremental purchases of necessary resources on short time frames.

Which type of NCPI management is concerned with this challenge?

Options:

Change management

Incident management

Capacity management

Availability management

Questions # 45:

Which statement is correct about using Halon as a fire suppression agent in data centers?

Options:

It is lethal to humans.

It damages the ozone layer.

It is corrosive to computer equipment.

It is conductive and may cause computer faults.

Questions # 46:

What is the primary purpose of data center physical security?

Options:

To monitor activities of data center employees

To set up proper firewalls and avoid hacking of computers

To keep unauthorized people out of places they do not belong

To research the background of individuals who visit the data center

Questions # 47:

Which benefit is provided when air distribution methods return the warmest air to the CRAC units?

Options:

Decreased heat load in the data center

Increased capacity of the cooling system

Maximized mixing of supply and return air

Elimination of resistance created by underfloor cables

Questions # 48:

What is the primary security disadvantage of a bar code card?

Options:

High cost

Easily damaged

Easy to counterfeit

Does not have a picture

Questions # 49:

In which heat rejection system is the condenser located outside of the CRAC unit?

Options:

Water cooled system

Glycol cooled system

Air cooled DX system

Air cooled self-contained system

Questions # 50:

Why are dry chemical fire extinguishers a poor practice for data center fire protection?

Options:

They set off smoke alarms.

They are corrosive to IT equipment.

They cause condensation on equipment.

They are ineffective against electrical fires.

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