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Lesson 3: Maintaining and Protecting Hardware REPUBLIC OF NICARAGUA
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Key TermsAfter you study the terms and their definitions here, you can complete the online Crossword Puzzle for Lesson 3. · Firewall: A combination of hardware and software that creates a buffer between an internal network and the Internet to prevent unauthorized access. · Hackers: Expert computer users who invade someone else’s computer, either for personal gain or just for the satisfaction of being able to do it. · Modem: Communications hardware device that facilitates the transmission of data. · Parallel ports: Computer ports that can transmit data eight bits at a time; usually used by a printer. · Plug and play: Technology that allows a hardware component to be attached to a computer so that it is automatically configured by the operating system, without user intervention. · Serial ports: Computer ports that can transmit data one bit at a time; often used by a modem or a mouse. · Surge protectors: Devices that protect electronic equipment from variations in electric current. · Troubleshooting: Analyzing problems to correct faults in the system. · Uninterruptible power source (UPS): A battery power source that provides electric current during a power outage. · Universal serial bus (USB): Standard for computer ports that support data transfer rates of up to 12 million bits per second. · Virus: A computer program that is written to cause corruption of data.
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