Question 1

The pipes of a VESDA smoke detection system are installed at the air intake of the air conditioner inside the computer room. Is this a good practice from an early smoke detection point of view?

Options :

A : It depends on the type of gas-based fire suppression which will be installed.

B : Yes, as this reduces the amount of piping to be installed in the data center, as all air will go through the air conditioner.

C : No, the piping should be installed at the air exhaust of the air conditioner, as there can also be a fire inside the air conditioner itself.

D : No, it will give a longer reaction time for the smoke detection system and there might also be bypass airflow.

Answer: D

Question 2

A data center scores Rated-3 in mechanical, Rated-4 in electrical, and Rated-2 in architectural. What is the overall Rating of this data center when the Rating is based on the ANSI/TIA-942?

Options :

A : Rated-2 since that is the lowest rating received

B : Rated-4 since that is the highest rating received

C : Rated-4 since electrical is more important than mechanical and architectural

D : Depends on the Rating scored in telecommunications

Answer: A

Question 3

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?

Options :

A : Standby

B : Passive

C : Active

D : Alternate

Answer: A

Question 4

You have three UPS systems connected in parallel. The UPS systems have an imbalance in the load sharing of approximately 20%. What should you recommend?

Options :

A : Review the cable lengths of each UPS to the common busbar

B : Nothing, there is no reason for any concern

C : Review the common mode noise levels within the computer room

D : Review the harmonics levels within the computer room

Answer: A

Question 5

In order to save energy, you are going to install an automated system to switch off lights. What should be taken into consideration when installing such a system?

Options :

A : Security guards should perform regular inspections verifying the system works.

B : The system should not be based on motion detection as the lights might suddenly switch off while staff is still at work.

C : It is not advisable to use such a system since it will reduce the lifetime of LED lighting.

D : At all times, the levels should allow for security cameras to function properly.

Answer: D

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