SCTE - Broadband TelecomCenter Specialist
(BTCS) - Facilities section Questions with 100%
Verified Correct Answers
Recommended
The conditions are narrower, and represent the target conditions at which the hardware
environment should be maintained for optimal reliability and performance.
Allowable Specifications
Specifications are generally quite varied and define the maximum limit that the hardware
should never exceed. Example, may accommodate warm temperatures, but that may not be
best for the hardware to achieve the most reliable operation.
Humidity and temperature
What two metrics is the HVAC system trying to control in a facility?
Conductive anodic filament (CAF) Formation
is a well-studied phenomenon driven by chemical, humidity, voltage, and mechanical means.
Letent heat of fusion
The amount of heat to melt ice.
Cold Liquid HVAC
HVAC system is helpful in hot desert climates--taking air that needs to be cooled into the
HVAC unit intake. The intake air goes through stages before it is sent to the data center.
Downflow Method
, The most common airflow path used by CRAC units, a combination of return air entering the
top of the unit and supply air being discharged from the bottom of the unit.
Discharged Air
air typically empties into a raised floor plenum below the electronic equipment racks. The air
supply pressurizes the raised floor plenum and then exits through cold tiles, which are
perforated floor tiles located next to the rack-mounted equipment.
Up-flow Method
The cold supply air from the unit can be discharged through the bottom, the front, or through
the top. The warmer return air can also be configured to enter the CRAC unit from the front,
the rear, or the top
Direct Expansion
What is the most common air conditioning system used in HVAC?
Infrastructure right-sizing
Matches growth with the capacity to optimize the investment.
N+2
If a HVAC system is built where there is one main system and two backup systems it would
fall into which redundancy class?
Power usage effectiveness (PUE)
The ratio of the total amount of power that might be used by the headend or hub, to the power
required for the critical or IT equipment--includes power used for lighting, cooling systems,
power distribution.
PUE
(BTCS) - Facilities section Questions with 100%
Verified Correct Answers
Recommended
The conditions are narrower, and represent the target conditions at which the hardware
environment should be maintained for optimal reliability and performance.
Allowable Specifications
Specifications are generally quite varied and define the maximum limit that the hardware
should never exceed. Example, may accommodate warm temperatures, but that may not be
best for the hardware to achieve the most reliable operation.
Humidity and temperature
What two metrics is the HVAC system trying to control in a facility?
Conductive anodic filament (CAF) Formation
is a well-studied phenomenon driven by chemical, humidity, voltage, and mechanical means.
Letent heat of fusion
The amount of heat to melt ice.
Cold Liquid HVAC
HVAC system is helpful in hot desert climates--taking air that needs to be cooled into the
HVAC unit intake. The intake air goes through stages before it is sent to the data center.
Downflow Method
, The most common airflow path used by CRAC units, a combination of return air entering the
top of the unit and supply air being discharged from the bottom of the unit.
Discharged Air
air typically empties into a raised floor plenum below the electronic equipment racks. The air
supply pressurizes the raised floor plenum and then exits through cold tiles, which are
perforated floor tiles located next to the rack-mounted equipment.
Up-flow Method
The cold supply air from the unit can be discharged through the bottom, the front, or through
the top. The warmer return air can also be configured to enter the CRAC unit from the front,
the rear, or the top
Direct Expansion
What is the most common air conditioning system used in HVAC?
Infrastructure right-sizing
Matches growth with the capacity to optimize the investment.
N+2
If a HVAC system is built where there is one main system and two backup systems it would
fall into which redundancy class?
Power usage effectiveness (PUE)
The ratio of the total amount of power that might be used by the headend or hub, to the power
required for the critical or IT equipment--includes power used for lighting, cooling systems,
power distribution.
PUE
