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Exam : APC PB0-200
Title : APC NCPI Design
1. If a company requests that its UPS output power be distributed to the racks through an isolation transformer, what are they trying to do?
A. decrease the cable size to the load
B. increase the efficiency of the system
C. increase availability throughout the data center
D. prevent electrical noise from locking up the servers
Answer: D
2. What are two reasons why a fully rated UPS (output kW = output kVA) is more compatible with today’s IT loads than an 80%-rated UPS (output kW = output kVA at a 0.8 power factor)? (Choose two.)
A. 80%-rated UPSs are more efficient.
B. Today’s IT loads are power-factor corrected.
C. Fully-rated UPSs have superior output voltage control.
D. Fully-rated UPSs make it less likely to undersize the UPS.
E. Today’s IT loads lock up when powered by an 80%-rated UPS.
Answer: BD
3. How do you achieve full system redundancy in a precision air conditioning system?
A. install multiple air conditioning systems in an N+1 configuration
B. install a properly-sized DX air cooled unit with chilled water back-up
C. install a properly-sized air conditioning unit with redundant compressors
D. install Building System cooling (comfort cooling) with an air conditioning unit in standby
Answer: A
4. Click the Calculator button. A medium-size data center has been retrofitted and the new IT equipment requires 39kW at a power factor 0.90. The existing UPS system is 40kVA. Which two actions should you take? (Choose two.)
A. keep the actual UPS system: 40kVA means 40kW
B. replace the diesel generator to cover the extra load
C. replace the actual UPS system with a minimum 45kVA
D. check the entire UPS installation to make sure it is able to support the new load
Answer: CD
5. What is a common application for 2-post racks?
A. telecom
B. server room
C. remote office
D. IT data center
Answer: A
6. An IT manager wants one hour of UPS runtime on a Voice over IP (VoIP) solution that will be located in a small wiring closet. To get the full hour of runtime and continuous operation, what else must be in place?
A. The closet must have sufficient cooling for that period.
B. Shutdown software should be loaded on the VoIP server.
C. The UPS must be oversized in wattage to provide this runtime.
D. The equipment must be installed in a full enclosure for proper security.
Answer: A
7. What is the most accurate way to determine the capacity of an existing standby generator?
A. ask the facility manager
B. calculate 30% over the UPS capacity
C. look at the generator name plate in the genset room
D. calculate capacity based on the load the generator is powering
Answer: C
8. A site requires redundant power feeds to single-corded servers. What is a possible redundant configuration?
A. two single-module UPSs feeding one rack-mount Automatic Transfer Switch and one outlet strip per rack
B. two single-module UPSs each feeding dual-panel distribution boards, which in turn feed two outlet strips per rack
C. two single-module UPSs each feeding two outlet strips per rack; plugging half the servers in one strip and the other half in another strip
D. two single-module UPSs each fed from separately derived utility sources; sources that come from one of two independent utility substations
Answer: A
