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A group of information on a computer than can be software programs or data. |
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A suffix at the end of a computer file name that indicates the encoding (file format) of the file's contents. |
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hypertext mark-up language |
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A system of interlinked hypertext documents connected via the Internet. |
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True or False: You should always credit the source for proper fair use practices. |
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True of False: Whenever possible, ask the owner of the copywright for permission. |
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Up to 10% of the work but no more than 30 seconds of music of lyrics from an individual work. |
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The permissable amount of use for music, lyrics, and music videos. |
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No more than five images from one artist or photographer, and no more than 10% or 15 images, whichever is less, from a collection. |
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The permissable amount of use for illustrations and photographs. |
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Up to 10% or 2500 fields or cell entries, whichever is less. No more than two copies can be made of a project. |
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The acceptable amount of use for numerical data. |
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Using neutral rather than subjective, exaggerated, or boastful language. |
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The percentage of users than scan web pages. |
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Reading on the web is __% slower than reading on paper. |
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Content should have __% of the word count when compared to paper. |
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One good method of writing for the web is to avoid placing your conclusion at the beginning of your page. |
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Using humor with caution, using outbound hypertext links, nice graphics, and good writing. |
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Increases credibility on a web page. |
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WANs (wide area networks) |
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These make up the internet. |
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The internet is a collection of point-to-point channels. |
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Packets do not visit a sequence of computers (hops) before they reach their destination. |
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A network where computers are geographically close. |
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Name a method of connecting to the internet. |
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Connection via a campus or enterprise network. |
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Name a method of connecting to the internet.
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IP (internet protocol) address |
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A series of four numbers seperated by dots, where the numbers range from 0-255. |
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Each TCP/IP packet is dependent on other packets. |
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The internet becomes less effective with every additional device added. |
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Computers programmed to send files to browsers running on other devices connected to the internet. These computers and their files comprise the world-wide web. |
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Most interactions over the internet use the client/server protocol. |
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A key aspect of the client/server relationship is that only a single service request and response are involved. |
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The Internet is primarily a synchronous communication system. |
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A related group of networked computers. |
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Translates the human readable names into the four-number IP addresses. |
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Authoritative Name Server |
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Server that keeps the complete list of IP addresses and corresponding domain names for all name servers and computers in its domain. |
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Computers change their client/server roles all the time. Sometimes they are computers, sometimes they are servers. |
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Internet Corporation for Assigned Names and Numbers. |
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Universal Resource Locator |
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Web crawler and Query processor. |
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The two main parts of a search engine. |
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Visits sites on the internet, discovering pages and building an index to the web's contents based on keywords. |
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Looks up user-submitted keywords in the index and reports back which web pages the crawler has found containing those words. Can find pages even if not crawled based on keywords from linked pages. |
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Computer (pre-1940 definition) |
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A person who performs calculations. |
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Computer (modern definition) |
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A programmable electronic device that can store, retrieve, and process data. |
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Programs are stored on computers for later use. |
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First-Generation Computers |
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vaccuum tubes, difficult to program, only used machine language. |
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Second-Generation Computers |
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Used transistors instead of vaccuum tubes, could work with business tabulating machines. |
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Third-Generation Computers |
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Used integrated circuits, timesharing, first mini-computers. |
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Fourth-Generation Computers
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First use of GUI (graphical user interface), LANs (local area networks), the Internet (WANs). |
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Palo-Alto Research Center (PARC) |
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Responsible for mouse control, icons, on-screen fonts, and pull-down menus. |
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The observation that, over the history of computing hardware, the number of transistors in a dense integrated circuit doubles approximately every two years. |
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The value of a telecommunications network is proportional to the square of the number of connected users of the system (n2). |
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The most fundamental form of information is the prescence or absence of a physical phenomenon. |
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Base 2 (0 or 1), where the basic unit is called a bit, and and 8 bits are grouped together to form a byte. |
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Memory inside a computer is arranged in a long sequence of bits. |
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Instruction fetch, instruction decode, data fetch/operand fetch, instruction execution, return result/store result. |
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5 basic parts of a computer |
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Memory, control unit, arithmetic/logic unit (ALU), input unit, output unit. |
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Stores the program running and the data on which the program operates. |
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Programmers use a sequence of memory locations together, ignoring the fact that they all have different addresses. |
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Arithmetic/Logic Unit (ALU) |
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Performs the math, generally does the work during the instruction execute steo of the cycle. |
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Input and Output Unit (I/O) |
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The wires and circuits through which information moves into and out of a computer. |
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Computers can perform an infinite amount of instructions. |
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Measures the rate of the Fetch/Execute (F/E) cycle. |
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Alternative form of machine language using letters and normal numbers so people can understand it. |
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Most modern software is written in high-level notation, which is then compiled (translated) into assembly language, which is then assembled into binary. |
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Contain basic operations that are necessary for effective use of the computer, but are not built into the hardware. Performs booting, memory management, device mangament, file management, and management of internet connections. |
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Enables a computer to perform certain tasks and gives a computer versatility. |
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Programs essential to efficient functioning of the computer. |
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Helps users carry out specific tasks |
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Allows a programmer to write English-like instructions. |
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Directs computer hardware, application programs, and user. |
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Duties of an Operating System |
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Manages programs, manages memory, deals with I/O devices, and interacts with the user. |
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The worst operating systems make use of virtual memory, where the hard drive is acts as an extention to the main memory (RAM). |
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Basic Input Output System |
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The United States has a basic set of privacy protections that apply across the life cycle of consumers' data. |
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Keep track of your browsing habits. |
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Global Unique Identifier (GUID) |
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Can send data back to a company when you visit a site, is concealed from view. |
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There is no workplace privacy. |
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A branch of philosophy concerned with determining what is right or wrong, especially in the context of moral dilemas. |
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All computer software has bugs. |
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A general term used to refer to a variety of forms of hostile or intrusive software. |
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Malware is the same as defective software. |
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The process of requesting, preserving, producing, extracting, reviewing, publishing, and managing electronically stored information with the intent of using it in regulatory, civil, and criminal environments. |
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Trained computer forensics people never boot from the original hard drive, connect to the original harddrive without using hardwire write protection, take a quick peek at the data, use the original media in analysis, or use software that is not court-approved. |
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When I delete a file, that files is automatically wiped from my hard drive. |
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Hidden data within a computer file that can provide further information about the file. |
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Special type of cryptography that makes prescence of data undetectable. It encrypts the original plaintext information into a digital image or sound file. |
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A hexadecimal number that represents a set of electronic data, and is a sort of digital DNA or digital fingerprint created by a forensic investigator. Even if a just a single bit is changed in the data, this results in a new hash value. |
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