CDCS 무료 덤프문제 온라인 액세스

Can you install a raised floor tight to the perimeter of the room?

• A.No, but this applies only to raised floors with a height of over 90 cm (3 ft)
• B.Yes, a raised floor needs to be installed tight to the perimeter to prevent air leakage
• C.No, to avoid damage to the raised floor due to building and hygrothermal movement
• D.Yes, but only if the data center is located in Zone 0 with no or little seismic activity

A data center is located in an area where the demand for power is higher than the utility power company is able to deliver. This results in frequent power outages and, therefore, power shedding (scheduled/controlled power shutdown for areas) is frequently applied. The mains power is more than 650 hours/year not available.
What type of generators should be installed?

• A.Continuous generators should be installed; no N+1 configuration is needed as the generators will run all the time
• B.Standby generators should be installed in at least an N+1 configuration
• C.Continuous generators should be installed, at least in an N+1 configuration
• D.A combination of standby-, prime-, and continuous-generators, as the duration of the power outage is unpredictable. The total available capacity of the generators should be at least 500% of the data center load

You are working with a customer who requires a guarantee that THDi levels coming from the UPS should not exceed more than 3% THDi. Furthermore, he wants to run a power-efficient data center. The UPS has a 6- Pulse SCR/Thyristor based rectifier. The current load on the UPS is approximately 80%. The customer indicates they are not expecting any changes on the ICT infrastructure for the next 3 years.
What should you recommend?

• A.Nothing, the UPS will be able to take care of the right levels of THDi
• B.Install an isolation transformer rated at K13 or K20
• C.Install an active harmonic filter on the UPS
• D.Install a passive harmonic filter on the UPS

The computer room has high levels of H2S gas contamination. What is the best option to resolve this issue?

• A.Vacuum the whole room using a HEPA/S-Class-based filter.
• B.Install air-scrubbers.
• C.Provide more air changes per hour by adding more fresh air to the computer room.
• D.Clean the room and racks with a damp/wet cloth.

A new facility requires electrical distribution of 100A to be installed in the computer room, 1 m (3 ft) above sensitive IT equipment. What type of system minimizes EMF impact?

• A.Install single-phase power cabling
• B.Install three-phase power cabling based on a combined cable (e.g., XLPE)
• C.Install bus bar trunking
• D.Install three-phase power cabling based on three individual core wires