?Match each correct item with the statement below. 

A. ?In a chassis, the path along which air from a cool air source is conducted, past equipment to cool it, and then out of the rack. Typically, air moves from front to back.
B. Electrical power flow on a circuit that continually switches direction.
C. The portion of an Ethernet network in which collisions could occur if two nodes transmit data at the same time.?
D. The flow of electrical power at a steady rate in only one direction.?
E. The field in a frame responsible for ensuring that data carried by the frame arrives intact. It uses an algorithm, such as CRC, to accomplish this verification.?
F. A device that converts DC electrical energy to AC electrical energy. Better inverters will also condition thepower, which helps protect sensitive electronic equipment from power fluctuations. ?
G. A specialized storage device or group of storage devices that provides centralized fault-tolerant data storage for a network.?
H. ?A device that changes the form of electrical energy in some way. Four common types are inverter, rectifier,transformer, and voltage regulator.
I. ?The industry-standard unit for measuring rack height. Standard racks are 42U tall-about 6 feet.
J. ?A device that maintains a constant voltage level for either AC or DC electrical energy.

A. ?airflow
B. alternating current (AC)?
C. ?collision domain
D. direct current (DC)?
E. ?FCS (frame check sequence)
F. inverter?
G. ?NAS (Network attached storage)
H. power converter?
I. ?rack unit (RU)
J. voltage regulator