大连理工大学14春《专业英语（计算机英语）》在线测试

大工14春《专业英语（计算机英语）》在线测试3
试卷总分：100 奥鹏学习网（aopeng123.cn) 发布
判断题
单选题
一、判断题（共 10 道试题，共 20 分。）
V
1. An online payment is a monetary transcation from the customer to the vendor over the Internet by credit card, digital cash, e-wallets, and smart cards.( )
A. 错误
B. 正确
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2. A leased line is a line rented from a telephone company for the exclusive use of a customer to access Internet.( )
A. 错误
B. 正确
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3. To access the Web, users require a Web browser ,which is the software program used to access the World Wide Web.（ ）
A. 错误
B. 正确
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4. A Domain Name System is an Internet service that translates domain names to or from IP addresses.( )
A. 错误
B. 正确
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5. Electronic Commerce means buying and selling products and services online via the Internet.( )
A. 错误
B. 正确
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6. EDI is a set of computer interchange standards for business documents such as invoices, bills, and purchase orders.( )
A. 错误
B. 正确
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7. FTP is the messages, usually text, send from one person to another via the Internet.（ ）
A. 错误
B. 正确
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8. To protect data, you need to implement a data backup and recovery plan.（ ）
A. 错误
B. 正确
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9. Program flowchart is an outline of the logic of the program you will write.（ ）
A. 错误
B. 正确
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10. A file is a collection of relation fields.（ ）
A. 错误
B. 正确
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大工14春《专业英语（计算机英语）》在线测试3
试卷总分：100 奥鹏学习网（aopeng123.cn) 发布
判断题
单选题
二、单选题（共 20 道试题，共 80 分。）
V
1. （ ） (Motion Picture Experts Group) standards are the main algorithms used to compress videos.Due to the fact that movies contain both images and sound, it can compress both audio and video.
A. JPEG
B. MPEG
C. MIDI
D. none of the above
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2. ( ) is a way of transferring files over the Internet from one computer to another.
A. Internet
B. FTP
C. E-mail
D. ISP
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3. （ ） stores data in tables that consist of rows and columns. Each row has a primary key and each column has a unique name.
A. Relational Database
B. Data Integrity
C. Data Dictionary
D. Data Warehouse
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4. ( ) is a protocol that lets a user log in to a remote computer and use programs and data that the remote owner has made available, just as if it were their own computer.
A. FTP
B. WWW
C. Telnet
D. NSFNET
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5. ( ), the process of changing plaintext data into enciphered text through an algorithm.
A. Decrypt
B. Encryption
C. Authenticate
D. Hacker
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6. A （ ） is a line rented from a telephone company for the exclusive use of a customer to access Internet.
A. leased line
B. online payment
C. credit card
D. ISP
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7. （ ） shorts for Waveform. It is the audio file format of Microsoft, and it is the waveform sound file format in Windows defined by Microsoft. It is the most common file format of digital sound derived from sampling.
A. MIDI
B. WAV
C. RA
D. Audio
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8. ( ), executable code that, when run by someone, infects other executable code in a computer.
A. Computer Security
B. Digital signatures
C. Computer virus
D. none of the above
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9. （ ）, which stands for Motion Picture Experts Group (MPEG) Layer 3, is rapidly becoming the standard for music transmission via Internet.
A. MP3
B. MP4
C. JPEG
D. AVI
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10. ( ), referring to a person who breaks into computer systems for the challenge or steal computer resources or corrupt a computers data.
A. Hacker
B. Password
C. DES
D. Authenticate
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11. （ ） is a person who is responsible for authorizing access to the database, for coordinating and monitoring its use, and for acquiring software and hardware resources as needed.
A. Database Management Administrator
B. Data Integrity
C. Data Dictionary
D. Data Warehouse
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12. ( ) ,conversion of either encoded or enciphered text into plaintext.
A. Decrypt
B. Encryption
C. Authenticate
D. Hacker
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13. （ ） (Joint Photographic Experts Group), standard for compressing continuous-tone still pictures. It does not handle black-and-white images, nor does it handle motion picture compression.
A. JPEG
B. MPEG
C. MIDI
D. none of the above
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14. （ ） is a computer technology that creates three dimensional real illusion in an artificial world.
A. Vector image
B. Bitmap
C. JPEG
D. Virtual Reality
此题选: D 满分：4 分
15. ( ), a secret code assigned to a user which is known by the computer system. Knowledge of the password associated with the user ID is considered proof of authorization.
A. Hacker
B. Password
C. DES
D. Authenticate
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16. ( ) is the messages, usually text, send from one person to another via the Internet.
A. TCP/IP
B. Telnet
C. FTP
D. E-mail
此题选: D 满分：4 分
17. （ ）:In encryption, a two-key system in which the key used to lock data is made public, so everyone can "lock".A second private key is used to unlock or decrypt.
A. Asymmetric key
B. Symmetric key
C. Coputer virus
D. Digital signatures
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18. （ ）, in networking, to establish the validity of a user or an object.
A. Authenticate
B. Decrypt
C. Encryption
D. Firewall
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19. （ ）(Pravate Key),in encryption, one key is used to both lock and unlock data. Compare with public key.
A. Asymmetric key
B. Symmetric key
C. Coputer virus
D. Digital signatures
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20. （ ）, the process of compressing a file such that,after being compressed and decompressed, it matches its original format bit for bit.
A. Lossy compression
B. Lossless compression
C. Bitmap
D. Vector image
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