CompTIA Server+ SK0-005 Practice Question
A technician is preparing a 42-U four-post cabinet that will be installed in a raised-floor data-center row that uses a hot-aisle/cold-aisle arrangement. The rack must hold two 4-U, 95 kg rack-mount UPS units, sixteen 2-U servers that move air front-to-back, and one 1-U network switch. Which rack layout BEST follows industry guidelines for cooling efficiency and safety?
Install both UPS units in the lowest 8 U, mount every server so its intake faces the cold aisle directly above the UPS, and place the switch in the top-front U positions.
Mount the UPS units in the center of the rack to balance weight, alternate server orientation every 2 U, and place the switch at the top rear of the cabinet.
Put the UPS units at the top rear of the rack, install the switch at the bottom front, and mount all servers below the UPS with their exhaust facing the cold aisle.
Start with servers in the lowest positions, mount the UPS units directly above them, and install the switch halfway up the rack to shorten Ethernet runs.