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Question # 4

Which management technique provides the ability to set and assign owner roles?

A.

Incident management

B.

Availability management

C.

Accountability management

D.

Owner resolution management

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Question # 5

What is the most common direction of airflow through a rack mount blade server assembly?

A.

Side to side

B.

Front to back

C.

Back to front

D.

Bottom to top

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Question # 6

What describes the ratio of watts to volt-amps?

A.

Frequency

B.

Power factor

C.

Actual power

D.

Apparent power

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Question # 7

Which approach is used to redundantly power IT servers?

A.

Dual power whips

B.

Dual cord, dual power supply

C.

Both 120 V and 208 V circuits

D.

Both solid and stranded copper cables

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Question # 8

Click the Exhibit button.

In the exhibit, which type of power problem is illustrated?

A.

DC offset

B.

Overvoltage

C.

Undervoltage

D.

Harmonic distortion

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Question # 9

Which is an example of a rack-oriented cooling architecture?

A.

A cooling unit is located in the ceiling plenum to cool the data center racks.

B.

A cooling unit is located within the rack itself to cool the contents of that rack.

C.

A cooling unit utilizes perforated raised floor tiles to deliver cool air to the rack.

D.

A cooling unit is located along the perimeter wall of the data center to cool a specific zone of racks.

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Question # 10

When is frequency variation a more likely occurrence?

A.

When using new UPS technology

B.

When using older UPS technology

C.

When a generator is heavily loaded

D.

When using three-phase power distribution

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Question # 11

What is a function of a transformer in a line interactive UPS?

A.

To increase the power factor as the load increases

B.

To increase harmonics by stepping down the output

C.

To regulate output voltage as the input voltage varies

D.

To provide low impedance for switched mode power supplies

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Question # 12

MTBF is presented in which form?

A.

Hours

B.

Percent

C.

Distance

D.

Currency

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Question # 13

The rear of an IT equipment rack is fitted with a duct that is connected to a drop ceiling plenum; the plenum is connected by a duct to the perimeter CRAC unit. The CRAC unit discharges air into a raised floor. The IT equipment rack is located above a hole in the raised floor which allows conditioned air to enter the rack.

This is an example of which type of air distribution system?

A.

Flooded supply, fully ducted return

B.

Locally ducted supply, flooded return

C.

Flooded supply, locally ducted return

D.

Fully ducted supply, fully ducted return

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Question # 14

Which three timeframes are included in MTTR? (Choose three.)

A.

The time to repair the system

B.

The time to diagnose a failure

C.

The time to assess the financial impact

D.

The time to write the failure resolution report

E.

The time to get the service technician onsite

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Question # 15

What represents a direct cost of downtime when an outage occurs in the data center?

A.

Brand perception is damaged.

B.

Revenue streams are slowed or stopped.

C.

Data center personnel need to be retrained.

D.

Software needs to be upgraded to latest versions.

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Question # 16

Click the Exhibit button.

Which type of power problem is shown in the exhibit?

A.

DC offset

B.

Interruption

C.

Undervoltage

D.

Harmonic distortion

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Question # 17

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

A.

Decreased heat load in the data center

B.

Increased capacity of the cooling system

C.

Maximized mixing of supply and return air

D.

Elimination of resistance created by underfloor cables

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Question # 18

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

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Question # 19

What does the term "short cycling" mean?

A.

The fire suppression system clean agents are running low and have not been recycled.

B.

Cool air from the CRAC bypasses the IT equipment and flows directly into the CRAC return air duct.

C.

The raised floor is obstructed with excess cables and cool air is not getting through the vented floor tiles.

D.

The UPS supplies less runtime than anticipated because of overall wear and tear on the internal batteries.

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Question # 20

What are the three elements of the fire triangle? (Choose three.)

A.

Fuel

B.

Heat

C.

Smoke

D.

Oxygen

E.

Nitrogen

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Question # 21

Which fire class involves live electrical equipment?

A.

Class A

B.

Class B

C.

Class C

D.

Class D

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Question # 22

How do blanking panels improve cooling within an enclosure?

A.

By increasing the mixture of hot and cold air

B.

By increasing air intake through vented doors

C.

By directing exhaust heat into IT equipment intakes

D.

By limiting the recirculation of air into IT equipment

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Question # 23

What is the most cost effective UPS configuration for a company that operates 8 hours a day, 5 days a week and requires redundancy?

A.

Capacity

B.

System + system

C.

Parallel redundant

D.

Distributed redundant

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Question # 24

Which specific incident management challenge does the system-level view of the relationship between interconnected components help identify?

A.

Incident urgency

B.

Resolution owner

C.

Problem location

D.

Proper corrective action

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Question # 25

What are three elements of the network-critical physical infrastructure (NCPI)? (Choose three.)

A.

Racks

B.

Power

C.

Cooling

D.

Storage

E.

Servers

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Question # 26

Click the Exhibit button.

Which air distribution method is displayed in the exhibit?

A.

Flooded supply, flooded return

B.

Flooded supply, fully ducted return

C.

Flooded supply, locally ducted return

D.

Locally ducted supply, flooded return

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Question # 27

Which solution would remedy a power interruption?

A.

UPS

B.

Power line conditioner

C.

Power factor corrected power supply

D.

Transient voltage surge suppressor (TVSS)

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Question # 28

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.

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Question # 29

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

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Question # 30

What are three advantages of biometric access control? (Choose three.)

A.

Cannot be lost

B.

Inexpensive to deploy

C.

Difficult to fool the sensor

D.

Cannot be shared with others

E.

Always correctly identifies the user

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Question # 31

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

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Question # 32

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.

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Question # 33

What characteristic is common to all cooling architectures?

A.

Deployable with on a raised floor

B.

Top or bottom airflow configuration

C.

Cooling equipment occupies white space

D.

Easily adaptable with changes in infrastructure

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Question # 34

What is the critical element of a conventional starter motor in a generator?

A.

Battery

B.

Starter cables

C.

Engine block heater

D.

Automatic charging system

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Question # 35

What is the largest cause of downtime in data centers?

A.

Sabotage

B.

Human error

C.

Natural disasters

D.

Equipment failure

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Question # 36

Which method will allow IT and Facilities to monitor every aspect of the data center?

A.

Enterprise management system (EMS) only

B.

Network-critical physical infrastructure (NCPI) only

C.

EMS and building management systems (BMS) through an NCPI element manager

D.

Enterprise management system (EMS) and building management systems (BMS) with integrated backbone

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Question # 37

Which temperature range is optimal for the proper function of a data center?

A.

62-65F (17-18C)

B.

72-75F (22-24C)

C.

82-85F (28-29C)

D.

92-95F (33-35C)

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Question # 38

What are three functions of a data center fire protection system? (Choose three.)

A.

Detect the presence of a fire

B.

Automatically opens all fire doors

C.

Suppress the fire and limit any damage

D.

Communicate the threat of fire to occupants and authorities

E.

Automatically activate the emergency power off (EPO) button

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Question # 39

Which cooling architecture attempts to eliminate hot spots within the data center by utilizing large volumes of air mixing throughout the space?

A.

Row

B.

Rack

C.

Room

D.

Ceiling

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Question # 40

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

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Question # 41

Which method of physical security offers superior protection?

A.

Smart card

B.

Biometric scan

C.

Video surveillance

D.

Combination of methods

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Question # 42

What is the minimum number of UPS modules used in a distributed redundant configuration?

A.

One

B.

Two

C.

Four

D.

Three

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Question # 43

What are two reasons for choosing enclosures with square holes and cage nuts? (Choose two.)

A.

Eases repair of mounting rails

B.

Eases installation

C.

Eases bolt alignment

D.

Eases enclosure stabilization

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Question # 44

What is the unit of measurement of the electrical current moving through a circuit?

A.

Volt

B.

Amp

C.

Ohm

D.

Frequency

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Question # 45

What are the three stages of combustion? (Choose three.)

A.

Incipient

B.

Back draft

C.

Thermal flux

D.

Intense heat

E.

Visible smoke

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Question # 46

Click the Exhibit button.

This picture illustrates which type of cooling architecture?

A.

Hybrid

B.

Row

C.

Rack

D.

Room

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Question # 47

Click the Exhibit button.

What does the exhibit represent?

A.

UPS control panel

B.

Pneumatic door opener

C.

Emergency power off (EPO) button

D.

Fire suppression de-activation (FSD) button

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Question # 48

Which two types of cables would you expect to see used in a network backbone?(Choose two.)

A.

Power cables

B.

Fiber optic cables

C.

Category 5/5e/6a cables

D.

Audio / video cables

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