Question No : 1
Which one of the following is an advantage of Glycol Cooled System?

• A.No additional cost is required
• B.No maintenance of glycol
• C.Glycol pipes can run long distances and can service several CRAC units
• D.Can be used in big data centers

Show Answers

Answer:
Explanation:
Glycol cooled systems are advantageous because they are efficient and can service large data centers with multiple racks. Furthermore, glycol pipes can run long distances, allowing a single system to service several CRAC units. This eliminates the need for multiple systems, resulting in cost savings and reduced maintenance.

Question No : 2
___________ protects electrical equipment from damage caused by overload or short circuit.

• A.Circuit breaker
• B.Volt switch
• C.IEC cable
• D.Server

Show Answers

Answer:
Explanation:
A circuit breaker is a device that protects electrical equipment from damage caused by overload or short circuit. It does this by automatically disconnecting the power supply when it detects a surge or drop in voltage, preventing the equipment from being damaged.

Question No : 3
Which one of the following controls the voltage produced at the output of the alternator?

• A.Voltage Meter
• B.Voltage Stabilizer
• C.Voltage Regulator
• D.Voltage Backup Device

Show Answers

Answer:
Explanation:
A voltage regulator controls the voltage produced at the output of the alternator. It's a device that maintains the output voltage of an alternating current (AC) power source within a safe range. The voltage regulator compares the actual output voltage to the desired voltage level and adjusts the voltage accordingly.
Voltage Meter, Voltage Stabilizer, and Voltage Backup Device are not devices that control the voltage produced at the output of the alternator. They are different types of equipment and have different functions.
A voltage meter is a device used to measure the voltage in an electrical circuit. A voltage stabilizer is an electronic device that maintains a constant voltage level. A voltage backup device is a device that provides temporary backup power in case of an electrical outage.

Question No : 4
Which mounted system is used to cool small IT environments?

• A.Air Mounted System
• B.Chilled Mounted System
• C.Ceiling Mounted System
• D.Floor Mounted System

Show Answers

Answer:
Explanation:
An air mounted system is often used to cool small IT environments. This type of cooling system is typically mounted on the wall or ceiling and works by blowing cool air into the room to lower the temperature. Air mounted systems are compact, easy to install and maintain, and can be a cost-effective solution for small spaces.

Question No : 5
Which type of power can be a source available to the data center that takes over the function of supplying when utility power is unavailable?

• A.Standby
• B.Passive
• C.Active
• D.Alternate

Show Answers

Answer:
Explanation:
Standby power, also known as backup power, is a type of power that can be a source available to the data center that takes over the function of supplying when utility power is unavailable. Standby power systems are designed to provide power to critical loads in the event of a power outage, and can include generators, uninterruptible power supplies (UPS), and batteries. Standby power systems can be used to provide power to the data center for a short period of time, such as a few hours or days, until utility power is restored.
Passive, Active and Alternate are not specific type of power sources used in data center.
They are terms used in different context and have different meaning.

Question No : 6
Which one of the following Volt Configurations support commercial environments and data centers?

• A.Single phase 120V and 240V
• B.Single phase 240V
• C.3-phase 280V
• D.Single phase 120V

Show Answers

Answer:

Question No : 7
Which one of the following uses sensors such as laser beams or touch sensor?

• A.CCTV
• B.Server
• C.Alarms
• D.Backup device

Show Answers

Answer:
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.

Question No : 8
The distance that a signal's energy can travel in the time it takes for one cycle to occur is called the signal's:

• A.amplitude
• B.frequency
• C.wavelength
• D.period

Show Answers

Answer:
Explanation:
Wavelength is a measure of the distance that a signal's energy can travel in the time it takes for one cycle of the signal to occur. It is calculated by dividing the speed of light by the frequency of the signal. Wavelength is generally expressed in meters (m)