The first part of the computer foundation
1. Microelectronics technology is a key technology in the field of information technology, with integrated circuits as the core. The following statement about integrated circuits is _ _ _ _ _ _.
The semiconductor material used in modern integrated circuits is mainly gallium arsenide, but it can also be gallium arsenide.
B. Integration refers to the number of electronic components contained in an integrated circuit, which can be divided into SSI, MSI, VLSI, etc.
C Moore's law points out that the integration degree of a single integrated circuit doubles in 18~24 months on average.
D China's second-generation ID cards are embedded with integrated circuit chips, which can realize electronic anti-counterfeiting and digital management functions.
2. Data transmission rate is one of the most important performance indicators in data communication. Gb/s is one of the measurement units of data transmission rate, and its correct meaning is _ _ _ _ _ _ _ _.
A. Megabits per second B. Megabits per second C. Megabits per second D. Megabits per second
3. The so-called "sign-changing operation" refers to changing an integer into another integer with the same absolute value but opposite sign. Assuming that the 8-bit integer x represented by the complement is100101,the result of sign change operation is _ _ _ _ _ _ _.
A.0 1 10 10 10 b . 00 10 10 1 c . 1 1 10 10 10d . 0 1 100
4. The following statement about PC motherboard is _ _ _ _ _.
There is no standard for the physical size of a motherboard, and each manufacturer can define it by himself.
B. The motherboard contains a chipset, which is the backbone of PC component interconnection and communication.
C. The motherboard includes BIOS and CMOS chips, the former is ROM memory and the latter is RAM memory.
D Motherboard contains CPU slots (or slots), memory card slots and other types of slots.
5. Of the following statements about the central processing unit (CPU) and memory of a PC, the correct one is _ _ _ _ _ _.
A. The CPU used for PC is Pentium series chips produced by Intel, and the CPU produced by other manufacturers is not compatible with it.
B. At present, there are dual-core microprocessors (such as Core 2 Duo), but there are no quad-core microprocessors.
C Generally speaking, the access speed of DRAM memory is slower than that of SRAM memory.
Generally speaking, there is only one DRAM or SRAM chip on a memory stick.
6. Among the following statements about PC I/O bus and I/O interface, the wrong one is _ _ _ _ _ _.
A. At present, a bus controller for coordinating and managing bus operations in a PC is included in a chipset on a motherboard.
The most important performance of B bus is data transmission rate, usually MB/s.
The data transmission rate of c SATA interface is usually lower than USB 2.0.
D the USB connector has four pins, one of which can output +5V power.
7. Among the following statements about I/O devices commonly used in PCs, the wrong one is _ _ _ _ _ _ _.
A. At present, desktop keyboards usually have more than 100 keys, and notebook keyboards have more than 80 keys.
B At present, the popular mouse is photoelectric mouse, and the interface with the host is PS/2 and USB.
The aspect ratio of C widescreen LCD is 16:9 or 16: 10.
D printing speed is an important performance index of a printer, and the speed unit is usually dpi.
8. The following statement about PC auxiliary memory is _ _ _ _ _.
A. At present, the disks of hard disks are mostly 3.5, 2.5 or 1.8 inches, and a hard disk can have one or more disks.
B At present, some USB flash drives can simulate floppy drives and hard disks to start the operating system.
C. At present, optical disk storage is mainly divided into three types: CD, DVD and BD, all of which are read and written by infrared laser.
D. At present, the speed of CD-ROM drive is usually expressed by how many times the speed. The data rate of 50 times the speed is about 7.5 MB/s..
9. The following statement about computer software is _ _ _ _ _.
A. Software generally refers to programs and their related data and documents.
B. Considering the use of software, software can be divided into system software and application software. The main system software includes operating system, language processing system and database system.
C. Considering the rights and interests of software, software can be divided into commercial software, proprietary software and free software, both of which are free software without copyright.
D.Linux is a kind of system software and free software.
10. Up to now, several versions of Windows series operating systems have been released. Among the following versions, the latest version of Windows is _ _ _ _ _ _ _ _.
A.Windows 7 b . Windows Me c . Windows XP d . Windows Vista
1 1. Among the following statements about the functions of the current Windows operating system, _ _ _ _ _ _ is wrong.
A. The system supports multi-task processing through the "time slice" rotation strategy.
B. The system uses spooling technology for storage management.
C. buffer technology is introduced into equipment management to reduce the waiting time of I/O operation.
The system supports Pnp function and carries out power management according to ACPI standard.
12. If the IP address of a host in the Internet is 20.25.30.8 and the subnet mask is 255.255.255.0, the host number of the host is _ _ _ _ _ _ _.
A.20 B. 25 C. 30 D. 8
13. The data to be transmitted in the local area network must be composed of several data frames in advance, and the format of each data frame is shown in the following figure:
Source computer
MAC address target computer MAC address control information payload
(transmitting data)?
The last part of the picture above "?" It means _ _ _ _ _ _ _.
A. protocol information B. check information C. redundancy information D. end mark
14. At present, there are many ways for network users to access the Internet, such as ADSL and HFC. The network used when accessing the Internet through HFC is _ _ _ _ _ _ _.
A. Cable telephone network B. Cable television network C. Wireless local area network D. Mobile telephone network
15. Among the following network protocols, _ _ _ _ _ _ _ is directly related to e-mail transmission.
A.FTP b SMTP c TELNET d NNTP
16. Of the following statements about words and computer word processing, _ _ _ _ _ _ _ is wrong.
A. Western characters mainly use the ASCII character set, and the basic ASCII character set * * * has 256 characters.
B The earliest Chinese character set adopted is GB23 12, which contains more than 6,000 Chinese characters and more than 600 non-Chinese characters.
C, no matter what method is adopted to input Chinese characters, when Chinese characters are saved in the computer, the unified internal code of Chinese characters is adopted.
D The representation of simple text and rich format character information is the same, but the difference lies in the representation of format information.
17. The color description method used in color images is called color model (i.e. color space). Among the following four color models, the color inkjet printer uses _ _ _ _ _ _ _.
A.RGB B. HSB C. YUV D. CMYK
18. The file extension is used to mark the type of file, and users should know the file extension as much as possible. Among the following files, the file that belongs to digital sound is _ _ _ _ _ _ _.
A.ABC。 RM B. ABC。 WMA ABC。 WKV D. ABC。 Single white female
19. The waterfall model of information system software development includes several stages, such as system planning, system analysis, system design, system implementation and system maintenance. Among the following tasks, _ _ _ _ _ _ belongs to the system implementation stage.
A. Problem definition B. Feasibility study C. System test D. Drawing E-R diagram
20. Among the following statements about Microsoft Word 2003 and Microsoft Excel 2003, _ _ _ _ _ _ is wrong.
A. when editing a document with Word software, you can save the document as a file in TXT, doc, RTF and MHT formats.
B when editing a document with Word software, you can count the number of characters in the selected text.
C In Excel software, you can open (import) files (data) in TXT, DBF and HTML formats.
D.Excel files can be set with passwords for opening permissions, but passwords for modifying permissions cannot be set separately.
The first part of the computer basic reference answer
2B 3D 4A 5C 6C 7D 8C 9C 10A
1 1B 12D 13B 14B 15B 16A 17D 18B 19C 20D
20 10 spring
The first part of the computer basic knowledge
1. In the following description of communication technology, the error is 1. D
Any communication system has three basic components: source, channel and destination.
B. In order to realize long-distance information transmission, carrier technology is adopted in both analog communication and digital communication.
C. In order to reduce the cost of transmitting information, multiplexing technology is widely used in communication.
One of the main performance parameters of digital communication system is channel bandwidth, which refers to the number of bits transmitted per unit time when data is actually transmitted.
2. In the following statements about integrated circuits and their applications, 2 is wrong. B
A the manufacturing process of integrated circuits is numerous, complicated and technically difficult.
B polished silicon wafers are called wafers, and each wafer can be made into a qualified integrated circuit chip at most.
C.IC cards are divided into contact IC cards and contactless IC cards, which are usually called radio frequency cards or induction cards.
D. integrated circuits are widely used. At present, there are integrated circuit chips in the second-generation resident ID cards in China.
3. In the following statements about digital technology, 3 is wrong. C
A digital technology uses finite states (such as "0" and "1") to represent, process, store and transmit information.
In B logical algebra, the result of logical addition (∨) and logical multiplication (∧) of 1 is the same.
Any decimal number can be accurately converted into an equivalent binary number.
In PC, positive integers are usually represented by the original code, and negative integers are represented by the complement code.
4. Among the following statements about PC host, 4 is wrong. B
A.BIOS and CMOS memory are installed on the motherboard, and ordinary users generally cannot replace them themselves.
B. Because the physical dimensions of PC motherboards are not standardized, motherboards of different PCs cannot be interchanged.
C. Chipset is the backbone of PC component interconnection and communication, and generally consists of two VLSI chips.
D the chipset determines the maximum memory capacity and speed that can be installed on the motherboard, and the types of memory chips that can be used.
5. Among the following four Intel microprocessor products, five are dual-core products. A
A. Core 2 dual-core processor B. Pentium Pro C. Pentium III D. Pentium 4
6. Among the following four kinds of PC main memory, 6 is commonly used at present. D
A.EDO DRAM B. SDRAM C. RDRAM D. DDR SDRAM
7. Of the following statements about I/O interfaces commonly used in PCs, 7 is wrong. C
A. At present, VGA interface is mostly used for the interface between graphics card and monitor.
B USB interface and PS/2 interface that can be used to connect the mouse are all serial transmission modes.
C. The USB interface connector has four pins, of which the 1 pin can obtain the+1.5V power provided by the host.
D.IEEE- 1394B interface is also a common high-speed interface for PC.
8. The following statement about PC external memory is wrong: 8. B
Because of the slow data access speed and small capacity, floppy disk storage has been gradually eliminated.
B. All hard disks are composed of two or more disks, and the number of disks in the hard disk is twice as many as the number of disks.
C at present, some USB flash drives can simulate floppy disks and hard disks to start the operating system.
D. At present, the common combined optical drive ("Kangbao") has both DVD read-only optical drive function and CD burner function.
9. Of the following statements about the storage capacity of optical disks, 9 is wrong. D
A. The storage capacity of 80 mm CD is about 200 megabytes.
B. 120mm optical disc has a storage capacity of about 600 megabytes.
The storage capacity of c single-sided single-layer 120mm DVD is about 4.7GB.
D the storage capacity of single-sided single-layer 120mm Blu-ray disc is about 17GB.
10. In the following statements about Windows series operating systems and their functions, the error is 10. D
A.A. Windows operating system supports the execution of multiple tasks in the system in a concurrent multitasking manner.
B.Windows XP is divided into multiple versions, which can be used for different computers and different applications.
C. Compared with Windows XP, Windows Vista has made many improvements, but it requires higher hardware operating environment.
D Hard disk and CD use the same file system, that is, FAT file system.
1 1. Among the following common application software, 1 1 cannot set a password for the edited document. D
A. Microsoft Word B. Microsoft Excel
C.Microsoft PowerPoint d . Microsoft front page
12. Among the following statements about WLAN, 12 is wrong. B
A. In a wireless LAN, the wireless access point is actually a wireless switch, and the indoor coverage distance can reach tens of meters.
B. At present, the protocols that WLAN can use are Wi-Fi and Bluetooth, and the data transmission rate of the latter is higher than that of the former.
C. If a computer is labeled with Intel Centrino, it should have an integrated wireless network card.
D There are many kinds of wireless network cards, such as PCI wireless network cards and USB wireless network cards.
13.IP addresses are classified into five categories: A, B, C, D and E. Among the following four IP addresses, 13 belongs to the category C address.
A. 1. 1 10.24 . 2 b . 202. 1 19.23 . 12 c . 130.24 . 35.68d . 26. 10.35 . 48
14. There are many local area networks and wide area networks with different structures connected to each other on the Internet. The basis of their communication and coordination is that they all adopt 14. B
A.ATM protocol B. TCP/IP protocol C. X.25 protocol D. NET BIOS protocol
15. Among the following statements about surfing the Internet, 15 is wrong. C
A. When using telephone dial-up access, the data transmission rate can only reach tens of kbps.
B. When ADSL access is adopted, the downlink data transmission rate of the network is usually higher than the uplink data transmission rate.
C. When using ADSL access, only ADSL modem is needed, and no network card is needed.
D. When using cable TV access, multiple end users will enjoy the bandwidth of the connecting line.
16. The following statement about the character set and its encoding is wrong: 16. A
A. The coding standard of Chinese characters used in Taiwan Province Province is mainly GBK, which contains a large number of traditional Chinese characters.
The number of Chinese characters included in B. B. GB 18030 standard exceeds 20,000, which is supported by Windows XP operating system.
Unicode character set contains a large number of simplified Chinese characters and traditional Chinese characters.
D.GB23 12 is the first Chinese character coding standard promulgated in China, and its character set also includes Russian and Greek letters.
17. If the size of an image is 1024×768 and the color depth is 16 bits, the data volume of the image is about 17 without data compression. B
A.768 kb b . 1.5 MB c . 3MB d . 12.3 MB
18. In the following four digital sound files, 18 cannot contain human voices. C
A. Central A.WMA
19. In the following statements about digital video, the error is 19. C
A. The color TV signal adopted in China is PAL system with a frame rate of 25 frames per second.
B. When using the camera to obtain video information, you don't need to use a special graphics card.
C.MPEG standard is usually used for data compression of digital video. For example, DVD is compressed according to MPEG-4 standard.
Three-dimensional computer animation is a kind of synthetic video, which is the basis of developing animation industry.
20. The following are several common classification methods of e-commerce. If e-commerce is divided into B-C, B-B and other types, the classification is 20. A
A. Classification of both parties to the transaction
B. Classification by type of network used
C. Classification by nature of commodities traded
D. Classification by size of commodities traded
20 10 spring test paper answers
The first part of the computer basic knowledge
1.D2。 B3。 C4 explosive. b5。 A six. D7。 c8。 B9。 d 10。 D
1 1.d 12。 b 13。 b 14。 b 15。 c 16。 a 17。 b 18。 c 19。 C20。 A
The first part of the computer basic knowledge (autumn 2009)
1. The following statement about personal mobile communication is 1.
A. 1 generation personal mobile communication (1G for short) adopts digital communication technology.
B. The communication technology adopted by GSM mobile phones widely used at present belongs to the second generation mobile communication technology (2G for short).
The third generation mobile communication technology (3G for short) combines wireless communication, Internet and multimedia communication.
D.3G has many international technical standards, including 3G technical standards independently formulated by China.
2. Of the following statements about integrated circuits, 2 is correct.
A. The semiconductor materials used in modern integrated circuits are all silicon.
B. All integrated circuits are digital integrated circuits.
C Moore's law holds that the integration of a single integrated circuit doubles every year on average.
D. Intel's microprocessor product, Core 2 Duo, has tens of millions of integrated electronic components.
3. The octal number equivalent to hexadecimal number AB is 3.
A.253 b . 254 c . 17 1d . 172
4. Of the following statements about PC CPU, 4 is wrong.
A.CPU contains dozens or even hundreds of registers for temporarily storing data, instructions and control information.
The CPU of all PCs has the same instruction system, so PCs can use the same software.
C A computer contains at least 1 CPU, and can also contain 2, 4, 8 or even more CPUs.
D. Intel is a major international company that develops and produces CPU, and China can also produce CPU.
5. Of the following statements about components on the PC motherboard, 5 is wrong.
A. The A.BIOS is stored in the flash memory on the motherboard, and its contents usually do not change after shutdown.
B. The power-on password set by the user is stored in CMOS, and the battery on the main board will continue to supply power to CMOS after shutdown.
C. Start the CMOS setup program to reset the data in CMOS, which is an indispensable part of BIOS.
D the network card is usually integrated on the motherboard, and its function is realized by an independent IC on the motherboard, which has nothing to do with the chipset.
6. From the hierarchical structure of PC memory, the fastest access speed among the following memories is 6.
A. cache B. RAM and rom C. register D. hard disk and u disk
7. Among the following four common PC I/O interfaces, the highest data transmission rate is 7.
A.PS/2 b . SATA c . IEEE- 1394 b d . USB 2.0
8. Of the following statements about I/O operation, I/O bus and I/O interface, 8 is wrong.
A. The task of input-output operation is to transfer information between input-output devices and designated memory areas.
B.I/O bus can only transmit data signals, but not control signals and address signals.
C Different types of I/O interfaces usually have different plugs/sockets, corresponding communication rules and electrical characteristics.
D the data transmission rate of parallel bus is not necessarily higher than that of serial bus.
9. In the following statement about PC I/O equipment, the wrong one is 9.
A. the imaging chip of a digital camera can be a CCD device or a CMOS chip. At present, CCD devices are mostly used.
B. The resolution of flat scanner is usually much higher than that of film scanner and drum scanner.
C The aspect ratio of a common widescreen LCD is 16:9 (or 16: 10).
D at present, banks, supermarkets and other commercial departments generally use needle printers to print passbooks and bills.
10. Among the following statements about computer software, 10 is wrong.
Programming language processing system and database management system are classified as system software.
B * * * * Enjoy software is a kind of copyright software, which allows users to try it for free before purchasing.
C machine language and assembly language are related to specific computer types and depend on CPU.
D. At present, PCs can only use Windows series operating systems, and UNIX and Linux operating systems cannot be used.
1 1. In the following commonly used PC software, you can directly save the edited document (content) as a picture type (such as JPEG file type).
A. Microsoft Word B. Microsoft Excel
C.Microsoft PowerPoint d . Microsoft front page
12. Among the following statements about Ethernet (local area network), 12 is wrong.
In * * * private Ethernet, only one pair of computers are allowed to communicate at any time.
In switched Ethernet, every computer has the same bandwidth, and its bandwidth is only determined by the switch.
C Whether it is * * * shared Ethernet or switched Ethernet, all computers in the network should be equipped with Ethernet cards.
D Whether it is * * * shared Ethernet or switched Ethernet, their data frames and MAC address formats are the same.
13. Every host connected to the Internet has an IP address. The following IP addresses cannot be used as 13.
A.2 1 1 . 256 . 49 . 68 b . 2 1 . 18 . 33 . 48 c . 120 . 34 . 0 . 18d . 37 . 25 1 . 68 . 0
14. In order to connect heterogeneous computer networks with each other, the network device that must be used is 14.
A. Modem B. Ethernet hub C. Ethernet switch D. Router
15. Among the following network protocols, the protocol related to sending e-mail is 15.
A.FTP C. SMTP D. TELNET
16. The following statement about the character set and its encoding is wrong: 16.
A. The basic ASCII character set * * * has 128 characters, and each character is encoded by 7 binary codes.
B. The GB2312 character set contains more than 6,000 Chinese characters, and each character is usually encoded by two bytes in the machine.
The characters in the C.GBK character set are also encoded with double bytes, which contains some traditional Chinese characters.
All characters in the D. GB 18030 character set are encoded in 4 bytes, so the code space of this character set is very large.
17. At present, the file type commonly used to save photos taken by digital cameras is 17.
A.BMP b GIF c JPEG d TIF
18.MP3 is a compression coding file format of digital waveform sound, and its compression coding standard belongs to 18.
A.mpeg-1b.mpeg-2 c.mpeg-4 d.dolby AC-3
19. The animation made by Flash software of Macromedia Company is vector graphics, and the file extension is usually 19 when it is saved as an animation file.
A.AVI D. MPG
20. In computer applications, CAD and CAM are typical information systems. They belong to 20.
A. management business system B. assistive technology system C. information retrieval system D. information analysis system
Intermediate Computer Basic Answers (Fall 2009 (1~20))
1.a2。 D3。 a4。 b5。 D6。 C7。 b8。 B9。 b 10。 D
1 1.c 12。 b 13。 a 14。 d 15。 c 16。 d 17。 c 18。 a 19。 b20。 B