Chapter 2 Flashcards
stands for electrostatic discharge, a sudden discharge of built-up static electricity between two different surfaces with different charge levels
ESD
stands for electromagnetic interference, a disturbance affecting transmission media that use electrical signals. The disturbance is caused by electromagnetic field variations
EMI
a situation where voltage drops below 80 percent of the normal voltage over a period of time
brownout
a significant increase in voltage above the normal voltage of a power line over a short period of time
power surge
stands for uninterruptible power supply, a supplemental power resource that helps maintain the power requirements by providing a secondary, consistent level of electrical power to a device
UPS
stands for material safety and data sheet, a fact sheet to provide information about material identification, fire hazards, and first-aid requirements. It also provides protective measures for the safe handling and storage of materials and spill, leak, and disposal procedures.
MSDS
a two-part tool that is typically used to identify an individual wire in a circuit. The toner part is connected to a cable at one end and generates a tone that travels inside the cable. The probe part traces the cable. When the probe is in close to the cable to which the toner is attached, the tone can be heard in the probe
tone generator and probe
a detailed list of problems and repairs that is maintained by a technician or by a support desk system. The list should include the date, problems identified, actions to correct the problems, replacement parts, and customer information. The records would allow a technician to determine what work has been performed in the past on a specific computer.
history of repairs
a conductor that connects the wrist of a technician to the device that the technician is working on. When static electricity (ESD) builds up in the body, the connection made by the wrist strap to the device balances the electrical charge by channeling the electricity through the wire that connects the strap.
antistatic wrist strap
a mat that is slightly conductive so as to help eliminate static electricity (ESD). It does this by drawing static electricity away from a component and transferring it safely from equipment to a grounding point.
antistatic mat
a device that can be used to check whether the power supply of a device is working properly
power supply tester
a device that can be used to check the condition of a data cable, including wiring shorts, faults, or wires that are connected to the wrong pins
cable tester
a measuring instrument that can be used to measure AC/DC voltage, electric current, and other electrical characteristics in an electrical circuit
multimeter
a utility in later Windows operating systems to manage storage devices installed or connected to a computer. The tasks that the utility can perform include initializing disks, creating partitions, and formatting partitions.
disk management
a utility in later Windows operating systems. The utility scans the critical files of the OS and replaces files that are corrupt
system file checker
