BICSI DCDC Certification Actual Exam
Study Questions with Correct Answers
1. Air quality, particulate contamination, ventilation and thermal guidelines -
ANSWER ASHRAE
2. Bonding - ANSWER The permanent joining of metallic parts to form an
electrically conductive path.
3. Primary side - ANSWER The high-voltage side of the power service
transformer, the electrical power service line side of a UPS or PDU, the
480V side of the static switch.
4. Psychological barrier - ANSWER A type of barrier that discourages
unauthorized access by its presence alone.
5. RPP location - ANSWER Downstream.
6. True or False: an RPP has circuit breakers - ANSWER True
7. Switchgear - ANSWER A more elaborate switchboard used to isolate
electrical equipment. Uses a segregated, insulated case and often contains
monitoring and controls.
8. Typical power range for switchgear - ANSWER Ranges 800A to 5000A.
9. Trunking - ANSWER Combining, multiplexing frames.
,10.Static UPS - ANSWER Non-moving, solid state components.
11.ATS - ANSWER Automatic Transfer Switch. A transfer switch that
automatically transfers load conductor connections from one source to
another.
12.ATS characteristics - ANSWER Self-acting. Make-before-break,
maintained.
13.Transfer switch (non-automatic) - ANSWER Manual.
14.Rotary UPS - ANSWER A UPS in which the batteries (energy source) drive
a motor (mover) which turns an alternator (power source), rather than being
solid state.
15.X-O bond - ANSWER Point in an electrical system where a 'separately
derived ground' is generated. Creates a 4th neutral conductor.
16.Building Commissioning - ANSWER Design Intent.
17.Core layer - ANSWER High-speed switching backbone.
18.Closed transition - ANSWER Circuit is 'maintained' or 'make before break'.
19.Distribution layer - ANSWER Between the core and access layer.
,20.DCIE - ANSWER Data Center Infrastructure Efficiency, it is the reciprocal
of PUE.
21.Formula for DCIE - ANSWER IT equipment power/Total Facility power X
100%.
22.Enclosure to prevent EMI - ANSWER A Faraday cage.
23.Fault tolerant system - ANSWER A concurrently maintainable system that
is beefed-up to where redundancy is not lost during failure or maintenance.
24.LDP - ANSWER Local distribution point.
25.Common bonding network - ANSWER Refers to ALL grounding systems
in a building.
26.Mesh Bonding Network (Mesh-BN) - ANSWER Refers just to that portion
connecting the low-voltage equipment.
27.Open transition - ANSWER A 'break-before-make' change of state transfer
where the electrical circuit is not maintained through the transfer.
28.Power strips - ANSWER To allow multiple devices to plug into the power
system in a rack or cabinet.
29.Reliability - ANSWER The probability that a component or system will
perform as intended over a given time period.
, 30.X-O bond definition - ANSWER Separate ground generated downstream.
31.MTTR - ANSWER Mean Time To Repair.
32.MTBF - ANSWER Mean Time Before Failure.
33.Dual entrance/dual pathway service feed location - ANSWER In dedicated
spaces that are separate from one another, yet close to the electrical
distribution spaces they serve.
34.Outdoor generators installation - ANSWER Should be installed within
shelters.
35.which is preferred between Indoor and Outdoor generators - ANSWER
Indoors
36.Generator exhaust location - ANSWER DOWNSTREAM of building air
intakes.
37.Running hours required of a generator/fuel system at full load - ANSWER 8
to 96 hours.
38.Design multiplier for an RPP - ANSWER N X 2.0 to 3.0.
39.Multiplier Calculation: UPS and UPS critical distribution - ANSWER N X
1.25.
Study Questions with Correct Answers
1. Air quality, particulate contamination, ventilation and thermal guidelines -
ANSWER ASHRAE
2. Bonding - ANSWER The permanent joining of metallic parts to form an
electrically conductive path.
3. Primary side - ANSWER The high-voltage side of the power service
transformer, the electrical power service line side of a UPS or PDU, the
480V side of the static switch.
4. Psychological barrier - ANSWER A type of barrier that discourages
unauthorized access by its presence alone.
5. RPP location - ANSWER Downstream.
6. True or False: an RPP has circuit breakers - ANSWER True
7. Switchgear - ANSWER A more elaborate switchboard used to isolate
electrical equipment. Uses a segregated, insulated case and often contains
monitoring and controls.
8. Typical power range for switchgear - ANSWER Ranges 800A to 5000A.
9. Trunking - ANSWER Combining, multiplexing frames.
,10.Static UPS - ANSWER Non-moving, solid state components.
11.ATS - ANSWER Automatic Transfer Switch. A transfer switch that
automatically transfers load conductor connections from one source to
another.
12.ATS characteristics - ANSWER Self-acting. Make-before-break,
maintained.
13.Transfer switch (non-automatic) - ANSWER Manual.
14.Rotary UPS - ANSWER A UPS in which the batteries (energy source) drive
a motor (mover) which turns an alternator (power source), rather than being
solid state.
15.X-O bond - ANSWER Point in an electrical system where a 'separately
derived ground' is generated. Creates a 4th neutral conductor.
16.Building Commissioning - ANSWER Design Intent.
17.Core layer - ANSWER High-speed switching backbone.
18.Closed transition - ANSWER Circuit is 'maintained' or 'make before break'.
19.Distribution layer - ANSWER Between the core and access layer.
,20.DCIE - ANSWER Data Center Infrastructure Efficiency, it is the reciprocal
of PUE.
21.Formula for DCIE - ANSWER IT equipment power/Total Facility power X
100%.
22.Enclosure to prevent EMI - ANSWER A Faraday cage.
23.Fault tolerant system - ANSWER A concurrently maintainable system that
is beefed-up to where redundancy is not lost during failure or maintenance.
24.LDP - ANSWER Local distribution point.
25.Common bonding network - ANSWER Refers to ALL grounding systems
in a building.
26.Mesh Bonding Network (Mesh-BN) - ANSWER Refers just to that portion
connecting the low-voltage equipment.
27.Open transition - ANSWER A 'break-before-make' change of state transfer
where the electrical circuit is not maintained through the transfer.
28.Power strips - ANSWER To allow multiple devices to plug into the power
system in a rack or cabinet.
29.Reliability - ANSWER The probability that a component or system will
perform as intended over a given time period.
, 30.X-O bond definition - ANSWER Separate ground generated downstream.
31.MTTR - ANSWER Mean Time To Repair.
32.MTBF - ANSWER Mean Time Before Failure.
33.Dual entrance/dual pathway service feed location - ANSWER In dedicated
spaces that are separate from one another, yet close to the electrical
distribution spaces they serve.
34.Outdoor generators installation - ANSWER Should be installed within
shelters.
35.which is preferred between Indoor and Outdoor generators - ANSWER
Indoors
36.Generator exhaust location - ANSWER DOWNSTREAM of building air
intakes.
37.Running hours required of a generator/fuel system at full load - ANSWER 8
to 96 hours.
38.Design multiplier for an RPP - ANSWER N X 2.0 to 3.0.
39.Multiplier Calculation: UPS and UPS critical distribution - ANSWER N X
1.25.
