英语计算机科学与技术练习题

The place values for the binary number system are _C_____A、1000,100,10,1B、10,8,6,4,2C、32,16,8,4,2,1D、100,10,1,0Binary digits are also called __B____.A、 CapacitorsB、BitsC、RAMD、BytesThe _D____ system has only two digits: 0 and 10A、biennialB、octalC、decimalD、binaryA(n) ___B______ is an Internet-based computer that accepts requests from browsers.A、Web clientB、Web pageC、Web siteD、Web serverThe ___C___ provides a calculator-style keypad for efficiently entering numbers.A、Function keyB、Editing keysC、Numeric keypadD、Typing keysTo clear a screen saver, you would_ B______.A、 Move the mouseB、Press any key and Move the mouseC、Press any keyD、Turn the computer offTo turn on a desktop computer, you need to press the ____B_____.A、Power button for the monitorB、Power button for the system unit or Power button for the monitorC、None of themD、Power button for the system unitTo access shared data on other workstations, you can use My Computer to access sharedresources under the ____D_____ folderA、Network and Internet ConnectionsB、 My DocumentsC、 FavoritesD、 My Network PlacesWhich of the following is considered a good tip to use when selecting a secure password? _____C____A、Use a password using only lettersB、Use a word out of the dictionary and spell it backwards.C、Use a password that is eight characters or moreD、Use part of your user ID so you can remember your password more easily__B_____ mode is a limited version of Windows that allows you to use your mouse, monitor,and keyboard, but no other peripheral devices.A、RecoveryB、SafeC、RebootD、Backup_B______ tests are typically used to gauge(测量) microprocessor performance.A、PlaybackB、SyntheticC、InspectionD、Application-basedA(n) ___B____ is one screenful of data or its equivalent storage space.A、BenchmarkB、FrameC、Frame rateD、VideoYou can measure processor speed, disk access speed, 3D graphics capabilities,and more using a(n)__A_______.A、Benchmark test(标准检查)B、Frame rate testC、Bandwidth test(带宽检查)D、RAM test__C________ is a communications system used to transport an interlinked connection ofinformation from computers that store it, to clients who want to view it.A、MosaicB、NetscapeC、The InternetD、The WebThe binary digits 0 and 1 can correspond to the "on " and "off" states of__A____when data is held in memory.A、Capacitors(电容)B、TonesC、Magnetic particlesD、Carrier wavesTechnologies used to equip devices with location awareness include__D____A、RFIDB、GPSC、Cellular netwrkD、All of themA personal computer display system consists of ___D___.A、 A scannerB、A graphics cardC、 display deviceD、Display device and A graphics cardBoth open source and _B______ can be copied an unlimited number of times, distributed forfree, sold, and modified.A、public domain softwareB、freewareC、sharewareD、demowareIf you are interested in the speed of your computer in accessing Web pages and e-mail, you should run __B____.A、A RAM testB、A bandwidth testC、A processor testD、A disk test"Physical Memory"（物理内存）refers to _A____.A、RAMB、The number of DIMM（双线内存模块） modulesC、CMOSD、Hard disk spaceThere are three types of storage technologies commonly used for personal computers_C______,optical, and solid state.A、Fiber opticB、ElectronicC、MagneticD、Random access_C_____ supplies an accessory program called Calculator that can be used to convertdecimal to binary and binary to decimal.A、MemoryB、The binary number systemC、The Windows operating systemD、All of themWhich of the following protocols is responsible for addressing packets so that they can?be routed to their destinations ?____A____A、IPB、TCPC、FTPD、POPDuring the Windows ＂boot process＂the computer ___B____A、Loads the operating systemB、All of the answerC、Checks its circuitryD、Looks for connections to peripheral devicesThe __C____ key deletes one character to the left of the ＂insertion point＂thatmarks your place on the screen.A、DeleteB、EnterC、BackspaceD、AltFast frame rates are important for displaying ____B___.A、Desktop iconsB、Smooth video and animationsC、Large databasesD、All of themThe __D____ key deletes characters to the right of the ＂insertion point＂that marksyour place on the screen.A、BackspaceB、EnterC、AltD、DeleteWhen a computer is in ＂sleep＂mode it__A_____.A、Conserves power by not turning the monitor or disk drivesB、All of themC、Is downloading your e-mailD、Has been turned off incorrectlyIf you want to rename a file that you are currently editing in Microsoft Word, which isthe best command to use? __A_____A、Save AsB、Save and close the file. Rename it using your file management utilitiesC、SaveD、None of themMicroprocessors work with two kinds of numbers, _____D__ and _______, so it is importantfor a processor benchmark to measure processing speed for both types of numbers.A、Long, shortB、Finite, infiniteC、Binary, decimalD、Integer, floating pointThe __B____ key captures the image on the screen and stores it in memory.A、EscB、 PrtScC、PauseD、WindowsThe binary 0 and 1 can correspond to the negatively and positively charged magnetic particles that _D_____.A、Represent data when it is transmittedB、Are produced by a printerC、Hold data in RAMD、Store data on diskUse paper and pencil to convert the binary number 00001011 to its decimal equivalent.You answer is __D___.A、10B、8C、9D、11In a(n)__D____number system, such as the binary number system or the decimal number system,the value of a digit is determined by its position in relation to other digits.A、Non-zeroB、ComputerC、CarryD、PositionalComputer games can be used as a benchmark test because they ____C___.A、Are fun to playB、Include a synthetic benchmark test for integer mathC、Measure and display frame ratesD、Access your computer’s hard disk a lotThe term_B______refers to the specifications of the components that are installedin a computer system.A、RAMACB、System configuration(系统结构)C、System graphics memorD、Access specificationsA(n) _C_____ operating system provides communications and routing services that allowcomputers to share data, programs, and peripheral devices.A、desktopB、multiuserC、serverD、multitaskingThe Windows desktop contains small pictures called__B______, which represent hardwaredevices, programs, and data files.A、SunburstsB、IconsC、MiceD、PicsBy pressing the key combination _____B__, you can close a program that hasstopped responding.A、Del, Enter, SpacebarB、Ctrl, Alt, DelC、Shift, Alt, EnterD、Tab, Ctrl, AltWhen you counting in binary, the next number after 101 is _C____.A、102B、1100C、110D、1011HTTP is a protocol that works with ____A______ to get Web resources to your desktop.A、TCP and IPB、IPC、TCPD、HTMLThe _B_____ provides a calculator-style keypad for efficiently entering numbers.A、Function keysB、Numeric keypadC、Typing keysD、Editing keysThe typing keys on a computer keyboard include the __D____.A、Letters of the alphabetB、Number/symbol keys near the top row of the keyboardC、Punctuation keysD、All of the answerThe typing keys on a computer keyboard include the __D____.A、Letters of the alphabetB、Number/symbol keys near the top row of the keyboardC、Punctuation keysD、All of the answerThe typing keys on a computer keyboard include the _D_____.A、Letters of the alphabetB、Number/symbol keys near the top row of the keyboardC、Punctuation keysD、All of the answerThe typing keys on a computer keyboard include the __D____.A、Letters of the alphabetB、Number/symbol keys near the top row of the keyboardC、Punctuation keysD、All of the answerWhich of the following is responsible for allocating specific areas of memory for each program running on your computer? __B_____A、None of the aboveB、The operating systemC、RAMD、The microprocessorMost cultures use the decimal number system because__C___.A、The binary number system is too complicatedB、Egyptian kings outlawed all other number systemsC、People started counting on ten fingersD、Roman numerals are not politically correctOn PCs, executable programs are stored in files with a(n) ___D____ extension.A、.docB、.bmpC、 .dllD、.exeUse paper and pencil to convert the binary number 11100 to its decimal equivalent.You answer is __B_____.A、27B、28C、26D、29Which of the following cannot be done through the "Save As" dialog box? ___C___A、Scan a file for virusesB、Create a new fileC、None of the answerD、Delete a fileAll of the following are peripheral devices EXCEPT a(n) ___B______.A、MonitorB、System unitC、PrinterD、Scanner___A____ software is an example of utility software.A、SecurityB、Desktop publishingC、PublishingD、Graphics___C____ software is an example of utility software.A、SecurityB、Desktop publishingC、PublishingD、GraphicsThe reset button performs a(n) ____D____by reinitiating(重启) your Windows desktop withoutactually turning the computer off and then turning it on again.A、Hard boot（硬启动）B、Shut downC、RestartD、Soft boot（软启动）Which of the following describes an interface that uses menus and icons that you canmanipulate by pointing and clicking with a mouse? ___B____A、All of themB、A graphical user interfaceC、A network interfaceD、A command-line interfaceUse paper and pencil to convert the binary number 11111 to its decimal equivalent.You answer is _C______.A、26B、469C、31D、29。