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57 Cards in this Set
- Front
- Back
LAN
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Local Area Network
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NIC
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Network Interface Card
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DSL
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Digital Signal Line
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A connectoin to the Internet can be broken down into the following components:
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Physical connection
Logical connection Applications |
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Protocol
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Protocol is a formal description of a set of rules and conventions that govern how devices on a network communicate.
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TCP/IP
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TCP/IP is the primary protocol used on the Internet.
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Application
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Applications interpret the data and display the information in an understandable format.
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Web browser
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A web browser displays HTML as a web page.
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FTP
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File Transfer Protocol
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File Transfer Protocol
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File Transfer Protocol is used to download files and programs from the Internet.
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Transistor
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A transistor is a device that amplifies a signal or opens and closes a circuit. Mircoprocessors can have millions of transistors.
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Integrated circuit (IC)
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An integrated circuit is a device made of semiconductor material. It contains many transistors and performs a specific task.
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Resistor
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A resistor is a device that is made of material that opposes the flow of electric current.
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Capacitor
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A capacitor is an electronic component that stores energy in the form of an electrostatic field. It consists of two conducting metal plates separated by an insulating material.
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Connector
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A connector is a port or interface that a cable plug into. Examples include serial, parallel, USB, and disk drive interfaces.
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Light emitting diode (LED)
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A light emitting diode is a semiconductor device that emits light when a current passes through it. These are commonly used as indicator lights.
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Backplane
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a backplane is a large circuit board that contains sockets for expansion cards.
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Memory chips
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RAM chips on memory cards plug into the motherboard.
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Network interface card (NIC)
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A network interface card is an expansion board that provides a network communication connection to and from a PC.
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Video Card
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A video card is a board that plugs into a PC to give it display capabilities. Video cards typically include onboard microprocessors and additional memory to speed up and enhance graphics display.
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Sound Card
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A sound card is an expansion board that handles all sound functions.
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Parallel port
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A parallel port is an interface that can transfer more than 1 bit at a time. It connects external devices, such as printers.
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Serial port
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A serial port is an interface used for serial communication in which only 1 bit is transmitted at a time.
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Mouse port
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A mouse port is designed for connecting a mouse to a PC
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Keyboard port
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A keyboard port is designed to connect a keyboard to a PC.
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Power cord
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A power cord connects an electrical device to an electrical outlet to provide power to the device.
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Universal Serial Bus port (USB)
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A universal serial bus port interface lets peripheral devices such sa mice, modems, keyboards, scanners, and printers be plugged in and unplugged without resetting the system.
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Printed circuit board (PCB)
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A printed circuit board is a thin plate on which chips (integrated circuits) and other electronic components are placed.
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CD-ROM Drive
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A CD-ROM drive is an optical drive that can read information from a CD-ROM. THis can also be a CD-RW (compact disk read-write) drive or a DVD (digital video disk) drive or a combination of all three in one drive.
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Central processing unit (CPU)
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The central processing unit is the "brain" of the computer,where most of the calculations take place.
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Floppy disk drive
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The floppy disk drive is a device that can read and write to floppy disks.
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Hard disk drive
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A hard disk drive is a device that reads and writes data on a hard disk.
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Microprocessor
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A microprocessor is a silicon chip that contains a CPU.
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Motherboard
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A motherboard is the computer's main circuit board. The motherboard is crucial because it is the computer's nerve center.
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Bus
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A bus is a collection of circuits through which data is transmitted from one part of a computer to another. The bus connects al lthe internal ocmputer components to the CPU.
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ISA bus
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Industry-Standard Architecture bus
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PCI bus
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Peripheral component interconnect bus
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Random-access memory (RAM)
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Random-access memory is also known as read-write memory. RAM is the main working aread, or temporary storage, used by the CPU for most processing and operations. RAM requires electrical power to maintain data storage.
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Read-only memory (ROM)
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Read-only memory is a type of computer memory in which data has been prerecorded and can only be read. A version of ROM known as EEPROM (electronically erasable programmable read-only memory) can be written to. It is also called Flash memory or firmware.
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Expansion slot
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An expansion slot is an opening in a computer usually on the motherboard.
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System unit
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A system unit is the main component of the PC system. It includes the case, chassis, power supply, microprocessors, main memory, bus, expansion cards, disk drives, and ports.
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Power supply
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The power supply component supplies power to a computer by taking alternating current (AC) and converting it to 5 to 12 volts direct current (DC) to power the computer.
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Personal Computer Memory Card International Association card slots
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PCMCIA card slots are used in laptop computers.
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IRQ
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Interrupt Request
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Interrupt Request
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An Interrupt Request is a signal that informs the CPU that an event needing its attention has occurred.
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When selecting a NIC for a network, consider the following:
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Type of network
Type of medium Type of system bus |
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Modem
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A modem is an electronic device that is used for computer communications through telphone lines.
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PSTN
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Public Switched Telephone Network
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DMA
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Direct Memory Address
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Direct Memory Address
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DMA transfers data from RAM to a device without going through the CPU>
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DNS
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Domain Name System
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DHCP
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Dynamic Host Configuration Protocol
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PING
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Packet Internet Groper
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ICMP
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Internet Control Message Protocol
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HTML
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Hypertext Markup Language
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Hyperlinks
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Hyperlinks are computer-program commands that point to other HTML files on a web server or other places in the same documents, which provide shortcuts to other web pages and files.
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Troubleshooting Internet Connection Problems
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Step 1 Define the problem.
Step 2 Gather the facts. Step 3 Consider the possibility. Step 4 Create an action plan Step 5 Implement the plan. Step 6 Observe the results |