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| Section | Objectives |
|---|---|
| Data Centre Energy Efficiency | - Methods to enhance overall energy performance - Energy efficiency metrics |
| Standards and Rating Level Definitions | - Tier classification standards - Rating levels history and definitions |
| Fire Suppression | - Gas volume requirements calculation - Fire suppression systems options - System installation verification procedures |
| Advanced Cooling | - Psychrometric chart - Floor plan set-up - ASHRAE recommendations - Types of cooling systems - Heat dissipation - Cooling definitions - Equipment airflow |
| Advanced Power | - Flywheel - Electrical protection devices - Hydrogen fuel cells - Battery bank terminology - Generator components - Required UPS specifications - Battery testing - Battery charging - Fuel storage and calculation - UPS parallel configuration - Sizing of protective components - Parallelling battery banks - Earth Leakage protection - Calculating battery banks - Power cabling and PDU requirements - Generator parallelling - Types of generators - Harmonic filters - Battery case selection - Surge protection |
| Data Centre Design/Life Cycle Overview | - Phases of the data centre life cycle |
| Advanced Electro Magnetic Fields | - Calculation of EMF attenuation factors - Sources of EMF - Single and three phase radiation - Safe distance guidance - Measuring EMF |
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問題 #50
How many approaches are there to remove unwanted heat from an IT environment?
答案：C
解題說明：
There are five common approaches to removing unwanted heat from an IT environment:
* Air conditioning: using mechanical cooling to remove heat from the air.
* Air economization: using outside air to cool the IT environment when the temperature is cooler than the desired temperature inside the data center.
* Liquid cooling: using a liquid coolant to absorb and remove heat from IT equipment.
* Evaporative cooling: using water evaporation to cool the air.
* Immersion cooling: submerging IT equipment in a liquid coolant to remove heat.
問題 #51
Which type of circuit breaker uses an electromagnetic coil to trip the switch when the current exceeds safe limits?
答案：B
問題 #52
Which one of the following uses sensors such as laser beams or touch sensor?
答案：B
解題說明：
Explanation
Alarms are physical security devices that use sensors such as laser beams or touch sensors to detect movement or intrusion. These devices are used to alert the user of any unauthorized activity in the area. Alarms can also be used in combination with CCTV cameras to provide a comprehensive security system.
問題 #53
True or False: Human error is a major cause of data center downtime
答案：B
解題說明：
Human error is a major cause of data center downtime. Human mistakes are one of the top causes of data center outages, accounting for around one-third of all downtime incidents. Common causes of human error in data centers include misconfiguration, inadequate maintenance, and improper security practices. To reduce the risk of human error, it is important to ensure that data center staff receive proper training, have adequate access control measures in place, and are familiar with best practices for data center operations.
問題 #54
____________ is a systematic variation of the voltage wave form or a series of random voltage changes of small dimensions.
答案：C
解題說明：
Explanation
Voltage fluctuation is a systematic variation of the voltage waveform or a series of random voltage changes of small dimensions that occur over a period of time. Voltage fluctuation can be caused by a variety of factors, such as changes in demand, changes in the power system, faults on the power system, or the switching of large loads.
問題 #55
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