【正文】 erates in both the physical layer and the ( ) layer of the OSI model.收藏A. Transport LayerB. datalinkC. Network LayerD. Physical Layer回答錯誤!正確答案： B In the following devices, which is NOT included in the list of the core ponents of modern puters __________收藏A. MicroprocessorB. RAMC. ChipD. Transistor (晶體管)回答錯誤!正確答案： DData ＿＿＿＿＿＿＿＿ can reduce the amount of data sent or stored by partially eliminating inherent redundancy.收藏A. pressionB. pilationC. conversionD. configuration回答錯誤!正確答案： A primary memory which is stored on chips located ____.收藏A. on the CPUB. outsideC. on the motherboardD. inside the processor回答錯誤!正確答案： C The data, when they are not encrypted, are called ( ).收藏A. contextB. ciphertextC. plaintextD. hypertext回答錯誤!正確答案： C The infamous “Michelangelo” ( ) strikes thousands of puters every year on March 6th.收藏A. crackerB. hackerC. virusD. disease回答錯誤!正確答案： CWhich of the following has been outdated among wired LAN technology? __________收藏A. The unshielded twisted pairB. The shielded twisted pairC. The coaxial cableD. The fiber optic回答錯誤!正確答案： C The data, when they are not encrypted, are called ＿＿＿＿＿＿＿＿.收藏A. ciphertextB. plaintextC. contextD. hypertext回答錯誤!正確答案： B The prisoners’ request ( ) more and better food is now consideration.收藏A. for, underB. for, intoC. for, onD. for, in回答錯誤!正確答案： A He doesn’t mind ( ) her birthday party.收藏A. being not invited toB. not to be invited toC. not inviting toD. not being invited to回答錯誤!正確答案： A ( ) refers to the parts of the puter that you can see and touch.收藏A. SoftwareB. HardwareC. HardshipD. Instruction回答錯誤!正確答案： B The most monly used tool in the design phase is the ＿＿＿＿＿＿＿＿.收藏A. objectrelationship chartB. topology chartC. structure chartD. flowcharts回答錯誤!正確答案： C Whereas the decimal system is based on 10, the ＿＿＿＿＿＿＿＿ system is based on 2. There are only two digits in the latter system, 0 and 1.收藏A. byteB. bilateralC. bitD. binary回答錯誤!正確答案： D Small as it is, a personal puter can perform the same program instructions as ( ).收藏A. printersB. human beingsC. larger putersD. typewriter回答錯誤!正確答案： C what does neural network mean?收藏A. 神經(jīng)網(wǎng)絡B. 自然網(wǎng)絡C. 社會網(wǎng)絡D. 精神網(wǎng)回答錯誤!正確答案： A A(n) ( ) is a connecting device that only regenerates the signal.收藏A. routerB. switchC. repeaterD. hu~B回答錯誤!正確答案： C J2EE is a singlelanguage platform。 calls from/to objects in other languages are possible through ( ), but this kind of support is not a ubiquitous part of the platform.收藏A. CLRB. CORB~AC. IISD. OMG回答錯誤!正確答案： B One of the differences between C and Java is that Java runs on any platform with a Java Virtual ＿＿＿＿＿＿＿＿＿＿＿＿＿＿ while C only runs in Windows for the foreseeable future.收藏A. MachineB. HardwareC. ProgramD. Software回答錯誤!正確答案： AThe distinction between the two terms gateway and ( ) is disappearing. They are now used interchangeably.收藏A. swtichB. gatewayC. hu~BD. router回答錯誤!正確答案： D Whereas the decimal system is based on 10, the ( ) system is based on 2. There are only two digits in the latter system, 0 and 1.收藏A. bitB. binaryC. byteD. bilateral回答錯誤!正確答案： B ＿＿＿＿＿ is built around hypertext and hypermedia.收藏A. DNSB. HTTPC. The WebD. FTP回答錯誤!正確答案： C Emerce do business through _________.收藏A. Internet and EDIB. facetoface meetingC. wirephotoD. puter回答錯誤!正確答案： A Chemical energy, ( ) from fuel or other matters, can be transformed into heat energy.收藏A. not considered thatB. whetherC. if or notD. no matter how回答錯誤!正確答案： B Which of the following items need not have unique values in the referencing relation? __________收藏A. Primary keyB. Surrogate keyC. Foreign keyD. Composite key回答錯誤!正確答案： C _________ uses mands that are easier for programmers to understand than are machine language mands.收藏A. Highlevel languageB. Assembly languageC. C++ languageD. C language回答錯誤!正確答案： B ( ) is built around hypertext and hypermedia.收藏A. The WebB. HTTPC. DNSD. FTP回答錯誤!正確答案： AIn the system development process, ＿＿＿＿＿＿＿＿ and pseudocode are tools used by programmers in the implementation phase.收藏A. objectrelationship chartB. flowchartsC. toplogic chartD. structure chart回答錯誤!正確答案： B There are ____ separate products that form the Windows 2000。收藏A. twoB. only oneC. fourD. three回答錯誤!正確答案： C“Multimedia” means that _________ .收藏A. it can do all above at the same time.B. it can play musicC. it can rotate a threedimensional model.D. it can show a graph.回答錯誤!正確答案： A _________ is a storage location inside the processor.收藏A. A registerB. MemoryC. ControlD. ALU回答錯誤!正確答案： A ＿＿＿＿＿＿＿＿＿＿, such as the SQL Server and Oracle providers, typically offer performance improvements due, in part, to the fact that there is one less layer of abstraction.收藏A. Native providersB. Bridge providers回答錯誤!正確答案： A The basic units of a puter system are as follows: _________收藏A. CPU, memory and diskB. CPU, memory and ALUC. CPU, input and output unitD. CPU, memory and I/O system回答錯誤!正確答案： D A(n) ＿＿＿＿＿＿＿＿ is usually a puter installed with the necessary software and allows two networks, each with a pletely different set of protocols, to municate.收藏A. switchB. hubC. routerD. gateway回答錯誤!正確答案： D Visual Basic has ( )versions.收藏A. fourB. twoC. threeD. one回答錯誤!正確答案： C A virus is a ( ) .收藏A. beastB. bad manC. puterD. program回答錯誤!正確答案： D Worm spread itself except by .收藏A. HardwareB. program