CDCP Energy Efficiency and Sustainability 2

Question 1

According to ASHRAE A2 thermal guidelines, what is the maximum recommended server inlet temperature?

Accepted Answer

35°C (95°F)

Answer

27°C (80.6°F)

Answer

40°C (104°F)

Answer

45°C (113°F)

Question 2

What does 'free cooling' in data centers primarily refer to?

Accepted Answer

Using outdoor ambient air or water to reject heat without mechanical refrigeration

Answer

Cooling systems that operate without any electricity

Answer

Cooling capacity provided at no cost by the utility company

Answer

Recycling server waste heat to cool adjacent equipment

Question 3

What does ERE (Energy Reuse Effectiveness) measure in a data center?

Accepted Answer

Net energy consumed minus reused energy, divided by IT equipment energy

Answer

The efficiency of UPS battery energy storage systems

Answer

The percentage of renewable energy used by the facility

Answer

The ratio of energy produced on-site to energy purchased from the grid

Question 4

What is the primary efficiency benefit of implementing hot aisle/cold aisle containment?

Accepted Answer

Preventing hot exhaust and cold supply air from mixing, improving cooling efficiency

Answer

Reducing the total number of servers required

Answer

Increasing rack density beyond standard configurations

Answer

Eliminating the need for raised floor plenum systems entirely

Question 5

What is Carbon Usage Effectiveness (CUE) primarily used to measure in data centers?

Accepted Answer

Total CO2 emissions caused by a data center divided by IT equipment energy consumed

Answer

The efficiency of carbon filter systems in air handling units

Answer

Carbon credits earned through renewable energy certificate purchases

Answer

The frequency of carbon-based UPS brush replacement

Question 6

LEED certification for green data center buildings is issued by which organization?

Accepted Answer

U.S. Green Building Council (USGBC)

Answer

The Green Grid

Answer

ASHRAE

Answer

Uptime Institute

Question 7

Which renewable energy procurement method allows a data center to claim renewable energy use without generating power on-site?

Accepted Answer

Purchasing Renewable Energy Certificates (RECs)

Answer

Installing solar photovoltaic panels on the facility roof

Answer

Deploying on-site wind turbines

Answer

Using grid power exclusively during off-peak hours