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CDCP EXAMINATION 2022- ĐỀ 02

Authored by Ly Hung Lai

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CDCP EXAMINATION 2022- ĐỀ 02
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40 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

98- What is the recommended maximum load imbalance between the three-phase electrical supply?

Approx 0% - 5%
Approx 5% - 10%
Approx 10% - 15%
Approx 15% - 20%

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

99- What is the recommended way to reduce Common Mode Noise (CMN) in the data center?

Install an isolation transformer
Install a true online double conversion UPS
Install the UPS as far as possible away from the ICT equipment
Use PDU's with form factor-4b Type 7

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

103- What is one of the most important questions when starting a data centre build project?

In which country is the data centre going to be built
How many project leaders will manage the project
Which standard will be applied to design the data centre
What is the cost of down time?

4.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

106- What factor do not influence the lifespan of SLA/VRLA batteries?

Ripple voltage/current
Enviroment temperature
Number of discharges and level of each discharge
UPS output power (kW)

5.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

107- What is an advantage and/or disadvantage of using a Glycol based air conditioner?

One condenser could connect to multiple air-conditioner untils inside the computer room
One air-conditioner until could connect to multiple condensers
Air-conditioner to condenser distance is limit to 18 meter / 59 feet
Air-conditioner to condenser distance must be at least 18 meter / 59 feet

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

110- What is the requirement or preference for shielded or unshielded network copper cabling?

The standards and equipment manufacturers have no preference
The standard recommend shielded, equipment manufactures have no preference
The equipment manufactures recommended shielded, standards have no preference
The standards and equipment manufactures both prefer shielded

7.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

111- What is the advantage/ disadvantage of Novec-1230?

It is a clear gas upon discharge
It allows the gas containers (tanks) to be installed far from the haszard area where the gas will be released
It needs to be refilled at the factory
It is a high-pressure gas, therefore nozzles must be mounted with two brackets

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