Exam (elaborations)
COMPUTER CONCEPTS EXAM FULLY EXPOUNDED -19
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COMPUTER CONCEPTS EXAM FULLY EXPOUNDED -19
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COMPUTER CONCEPTS EXAM FULLY EXPOUNDED #1932 bit processor - correct answer Type of addressing used by PC's as of 2011. Allows for addressing of up to 4 GB of main memory
64 bit processor (max memory) - correct answer Home basic-8GB
Home premium-16GB
Professional-192GB
Accounting software - correct answer Software that helps companies record and report their financial transactions.
Adware - correct answer A software program that delivers advertising content in a manner that is unexpected and unwanted by the user.
Analog signal - correct answer a wavy signal. A modem converts the computers digital signal into an analog signals that can be transmitted over dial up internet connections and can transverse ordinary phone lines.
Anti-spyware software - correct answer Scans for know spyware programs and removes
them from the system.
Anti-virus software - correct answer Software that identifies the presence of a virus and is capable of removing or quarantining the virus.
Application software - correct answer The set of programs on a computer that helps a user carry out tasks such as word processing, sending e-mail, balancing a budget, creating presentations, editing photos, taking an online course, and playing games.
Architecture - correct answer (computer science) the structure and organization of a computer's hardware or system software
ASCII - correct answer American standard Code for Information Interchange, The American Standard Code for Information Interchange. It is a mapping that takes common characters in American English and maps them to number so that they can be represented on a computer. For example, "A" maps to the decimal number 65 or the byte 01000001.
BD-R - correct answer (Blu-ray disc recordable) A Blu-ray disc that can be recorded on one time.
BD-RE - correct answer BD-RE (Blu-ray Disc Rewritable) can be erased and re-
recorded multiple times.
BIOS - correct answer A coded program that is executed when the computer system is first turned on the provides low-level access to the hard disk, video, and keyboard. Binary digit - correct answer The means by which computers represent data; also called
bits. It is either a zero or a one. (ECC7) or 1=on, 0-off
Bits per second - correct answer A unit or measurement describing the number of bits of
data transmitted electronically in one second. Bps
Bluetooth - correct answer A wireless standard for using radio waves to communicate between devices. Class 3 Bluetooth devices (the most common) communicate at distances up to one meter.
Blu-ray - correct answer Blu-ray is an optical disc format such as CD and DVD. It was developed for recording and playing back high-definition (HD) video and for storing large amounts of data. While a CD can hold 700 MB of data and a basic DVD can hold 4.7 GB of data, a single Blu-ray disc can hold up to 25 GB of data.
Boot process - correct answer Sequence of events that occurs between the time you turn on a computer and the time that it becomes ready to accept commands. Simply the
act of turning your computer on.
Broadband connection - correct answer An Internet connection such as DSL or cable modem that offers higher bandwidth, and therefore faster transmission speed, than standard modem connections.
Byte - correct answer a sequence of 8 bits (enough to represent one character of alphanumeric data) processed as a single unit of information
Cable - correct answer A bundle of wires covered by rubber or plastic along which an electric current can pass, such as attach a peripheral device to a computer port.
Cache memory - correct answer Small blocks of memory, located directly on and next to
the central processing unit (CPU) chip, that act as holding places for recently or frequently used instructions or data that the CPU accesses the most. When these instructions or data are stored in cache memory, the CPU can more quickly retrieve them than if it had to access the instructions or data from random access memory (RAM).
Card - correct answer a removable printed circuit board that adds some feature to a computer, and is inserted into a slot on the motherboard to expand the motherboards capabilities
CD - correct answer Stands for "Compact Disc." cds are circular discs that are 4.75 in (12 cm) in diameter. The data on a CD is stored as small notches on the disc and is read by a laser from an optical drive. Cds can hold up to 700 MB of data or 80 minutes of audio. CD-R - correct answer Stands for "Compact Disc Recordable." CD-R discs are blank cds that can record data written by a CD burner. The word "recordable" is used because
CD-Rs are often used to record audio, which can be played back by most CD players. However, many other kinds of data can also be written to a CD-R, so the discs are also referred to as "writable cds." The data burned onto a CD-R disc is permanent, meaning it can not be altered or erased like the data on a hard drive. Typically, once a CD has been burned, it will not be able to record any more data.
CD-ROM - correct answer Stands for "Compact Disc Read-Only Memory." A CD-ROM is a CD that can be read by a computer with an optical drive. The "ROM" part of the term means the data on the disc is "read-only," or cannot altered or erased.
CD-RW - correct answer A CD that allows data to be erased and written again several times. Used to store files and folders.
Cell - correct answer the space formed by the intersection of a row and a column; the basic unit of a worksheet
Central processing unit - correct answer The CPU is mounted on the motherboard and executes commands from a computer's hardware and software; the principal computer chip that contains several processing components, which determines the computer's operating speed; the "brain" of a computer
Channel - correct answer the means by which a message is communicated such as a coaxial cable over which a message is went in data communications
Character-based display - correct answer A monitor display that divides the screen into a grid of rectangles, one for each typed character.
Characters per second - correct answer CPS, speed measurement for dot matrix printers
Chip - correct answer An integrated circuit embedded in semiconductor material.
Circuit - correct answer an electrical device that provides a path for electrical current to flow
Circuit board - correct answer A flat piece of insulating material inside a computer, on which electrical components are mounted.
Client - correct answer (computer science) any computer that is hooked up to a computer network
Client/server network - correct answer A network in which dedicated computers called servers store data and provide print services or other capabilities to computers running the appropriate client service or services.
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