The main purpose of computer and computer thinking artificial intelligence is to replace the human brain with computers. Option: B Trojan horse program is a non-infectious virus disguised as genuine software option: A The main feature of the second generation computer is that all transistors are used, and the operation speed reaches several hundred thousand times per second. Choose: B The most fundamental content of computational thinking, that is, its essence is abstraction and automation. Optional: A Sensing and identification technologies include encoding, compression and encryption of information. Computer software is embodied in programs and files and protected by copyright law. But the ideas embodied in software are not protected by copyright law. A information is the signal and message transmitted by all human survival activities and natural existence. Grid computing is a distributed computing. The hardware feature of the third generation computer is that discrete transistor elements are replaced by small and medium-sized integrated circuits. The programming language of the first generation computer is machine language and assembly language expressed by binary code. A: In the final analysis, computational thinking is computer programming. Computational thinking is an idea, not an artifact. Cloud computing is the product of the integration of traditional computer and network technology, which means that computing power can also be circulated as a commodity through the Internet. Computational thinking is the way people think like computers. Optional: B minicomputer has two characteristics: one is multiprocessor structure and multilevel storage system, and the other is simplified instruction system. A The application of LSI is the basic feature of the fourth generation computer. Malware is Trojans, worms and viruses that deliberately perform malicious tasks on computer systems. Information processing and reproduction technologies include character recognition, voice recognition and image recognition. Option: B The identification of computer virus is undertaken by the Information Network Security Supervision Department of the Ministry of Public Security. A Information technology (IT) refers to all technologies that can expand people's information functions. Optional: A computer system and calculation principle In order to improve the running speed and execution efficiency of computers, pipeline control technology is introduced into modern computer systems, so that the components responsible for fetching, analyzing and executing instructions work in series. Option: B The set of all instructions that the computer can recognize is called the instruction system of the computer. Option A: The operating system is the most important system software, and its function is to manage, schedule and allocate all the resources of the computer system. A refresh frequency is the technical index of CRT display, which refers to the speed of screen update. The higher the refresh frequency, the less screen flicker. Optional: AASCII code adopts 7-bit binary code, which can represent 26 English letters (uppercase and lowercase), 42 common symbols and 34 control characters. Optional: Assembly language is characterized by its binary composition, which can be directly interpreted and executed by CPU. Optional: B main frequency refers to the clock frequency or working frequency of CPU and chipset. Option B: Compared with internal memory, external memory has the characteristics of large capacity, slow speed, high cost and persistent storage. Choice: The desktop compatible machine of B microcomputer is to choose various components and configure your own computer according to your own needs. Option A: Computational complexity refers to the change of storage space needed to solve the problem with the increase of the scale of the problem. Option: b At present, there are two commonly used hard disk interfaces for microcomputers: IDE and SATA. In which IDE is a serial interface and SATA is a parallel interface. Optional: b Visible entities such as electronic components, mechanical devices and circuits that make up a computer system are called hardware of the computer system. Option: A The digital processing process of audio signal and video signal is sampling → quantization → coding. Choice: BCache mainly solves the matching problem between the high speed of CPU and the low speed of RAM. Optional: A The external memory of microcomputer refers to auxiliary memory such as floppy disk, hard disk, CD-ROM, mobile storage device, etc. Choose: a judge that LINUX used by the operating system and XP operating disk system is a time-sharing operating system. Choice: A To format the USB flash drive, right-click the "My Computer" icon on the desktop and select the format command. Option: b Restarting the computer means clearing all the information in the memory and re-calling the Windows operating system into the memory. Optional: Clipboard is a temporary storage area in memory, which can realize data transmission and * * * sharing between applications in Windows environment. Selection: The symbol "/"cannot be used in the file name. Opening a dialog box is to start an application. Option: B. Files deleted from the recycle bin cannot be recovered without the help of other software. Option: Deleting files with del key is physical deletion rather than logical deletion. Select: b Hide the speakers on the right side of the taskbar to open the "Sound and Audio Devices" dialog box in the control panel, and uncheck the "Put the volume icon in the taskbar" check box. Selection: A: When searching for files, you can search by extension. A we can't know the usage of CPU. Optional: AWindowsXP operating system is a single-user single-task operating system. Option: b Install the printer, not only by connecting the data cable of the printer to the computer, but also by installing the printer driver. Option: Logging off the computer has exactly the same effect as restarting the computer. B computer networks and internet application packet switching networks are also called X.25 networks. A search engine is an application. WAN is a broadcast network. A: B distributed processing is one of the characteristics of computer networks. Network card is the basic hardware of network communication, and the computer is connected with the network communication line through it. The basic requirements of network security are confidentiality, integrity, availability, controllability and non-repudiation of information. AGoogle is a typical directory search engine. B asymmetric key cryptosystem has also become a public key cryptosystem, that is, encryption and decryption use two different keys. People usually call the computer network with standardized architecture the third generation computer network. AYahoo is a typical directory search engine. Optional: Gateways, also known as protocol converters, are devices connected to different types of LANs. Optional: Hypertext files in AWWW are written in Hypertext Markup Language. Optional: Digital signature, also known as electronic signature, is a way to sign and confirm the information transmitted on the network. Internet is a network of computer networks. Symmetric key cryptosystem is also called conventional key cryptosystem, that is, encryption and decryption use two different keys. Choice: b Public information processing The collection of various paragraphs or font formats is called styles, and Word has built-in styles of various words or paragraphs. Users can only use built-in styles, and cannot create new styles themselves. Exact answer: The B placeholder indicates the specific area where the position information of the object is inserted, and it is the preset frame in the layout. Options: bFind and Replace can not only find and replace many identical words in the text, but also find and replace formatted text, conduct complex search with unprinted characters and wildcards, and conduct intelligent search and replacement. Optional: The essence of the sinking of the initial letter A is to convert the selected initial letter in a paragraph into a graph. Selection: a In Excel, before classifying and summarizing the data list, the fields that are the basis of classification must be sorted. Selection: A The function of the "New Slide" command in the "Insert" menu is to insert a new slide after the current slide; The function of the Slide Copy command on the Insert menu is to insert a slide exactly the same as the current slide before the current slide. B in Word2003, when adjusting the character spacing, you can adjust the spacing between Chinese and English, Chinese and numbers, and English and numbers. Optional: Section A is the typesetting unit of Word. You can set different page formats and text formats for each section, and you can typeset by section. By default, the whole document is a section, and the document can be divided into several sections as needed. Public information is usually expressed in various forms, such as text, sound, graphics, images and videos. Selection: When the formula is moved or copied, the absolute reference will change according to the relative position of the reference cell. Selection: You can set the validity of the input data before inputting the data into the cells of the Excel worksheet to prevent illegal data from being input. Option: Mail merge requires two files, one is the main file and the other is the data source file. Selection: filtering refers to the centralized display of qualified records in the worksheet and the deletion of unqualified records, so as to narrow the search scope and improve the operation speed. Choice: b You can change and set the appearance of slides by setting the layout, using the master, choosing the color scheme and applying the design template. Options: a. With the automatic checking function, Word will mark spelling errors with green wavy lines and grammatical errors with red wavy lines when inputting text, which is convenient for correcting the errors in input. Option: b The frequency range of basic voice of multimedia technology is mainly concentrated in the range of 100 Hz ~ 10 kHz. Sound is determined by two basic parameters: frequency and amplitude. The higher the frequency, the louder the sound. Optional: The data compression rate of BMP3 can reach above 20: 1. Option: b Audio special effects often achieve special sound effects by adjusting the power intensity, time delay and aliasing balance of the left and right channels of the audio waveform. Optional: AMIDI file saves waveform data of music played by MIDI device. Optional: the BCMYK color model represents various colors by mixing four basic colors in different proportions. Option: b When editing a picture in Photoshop, the best way to avoid color loss is to edit the image in Lab mode and then print it in CMYK mode. Digital audio is characterized by large dynamic range, easy editing and special effects processing, but poor anti-interference ability. The research of content-based retrieval technology is an important field of multimedia technology research. Option: A When the analog signal is digitized, the sampling frequency should be more than twice the frequency of the signal itself. Video is a dynamic image, and animation is also composed of dynamic images. There is no essential difference between the two. BFlash is especially suitable for network animation, because it uses vector mode to save animation files and streaming technology. The compression and decompression technology of multimedia data has always been the key technology that must be solved in multimedia technology. Option: a In the process of audio and video digitization, the quantization process is essentially a lossy compression coding process, which will inevitably bring information loss. Optional: A. The integration of multimedia technology refers to the integration of various products by the hardware devices that constitute the multimedia application system. Selection: b Web page design basis ... is a mark used to set font, size, color, etc. Containing text. Optional: ACSS technology can control layout elements (such as tables), fonts, colors, backgrounds, link effects and other graphic effects in web pages more accurately. A You can't upload websites directly in Dreamweaver8.0, but you must upload them with FTP software. Selection: BCSS style can only be used for one page, not for other pages. Select: b uses layout mode to lay out the page, which actually creates layout tables and layout cells before adding content. Selection: a Click the link on the navigation bar to jump to the corresponding page for browsing. Optional: The frame structure can achieve the purpose of displaying multiple web pages in a browser window. Optional: A: In web pages, HTML tags are used to make scrolling subtitles. Optional: The markup code of BHTML language is interpreted by the Web browser. Optional: Define the table title in a pair of tags. Optional: AWeb browser itself can interpret audio and video files. Optional: b When designing a webpage with frames, a structure containing n frames will generate n webpages. Optional: The function of ... b The tag code in HTML language is to inform the browser that the file contains HTML tag code. B The only common image formats on the Internet are GIF, JPEG and DWG. Option: b A collection of multiple page files, pictures and other information contained in a website is called a website. Option: a