计算机专业英语第13章,《计算机专业英语》第13章在线测试

《计算机专业英语》第13章在线测试

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《计算机专业英语》第 13 章在线测试剩余时间：59:53 答题须知：1、本卷满分 20 分。 2、答完题后，请一定要单击下面的“交卷”按钮交卷，否则无法记录本试卷的成绩。 3、在交卷之前，不要刷新本网页，否则你的答题结果将会被清空。 第一题、单项选择题(每题 1 分，5 道题共 5 分) 1、Confidentiality of the message is not enough in a secure communication; ＿＿＿＿＿＿＿＿ is also needed. The receiver ne eds to be sure of the sender’s identity. A、encryptionB、authorization C、authenticationD、encapsulation 2、The data, when they are not encrypted, are called ＿＿＿＿＿＿＿＿. A、plaintextB、ciphertext C、hypertextD、context 3、A virus is a ＿＿＿＿＿＿＿＿＿ . A、beastB、computer C、bad manD、program 4、Many viruses go resident in the memory like a ( ). A、.exe fileB、.com file C、tsr programD、data file 5、Now, about ( ) different viruses account for all the viruses that actually spread in the wild. A、30B、150 C、1800D、3000 第二题、多项选择题(每题 2 分，5 道题共 10 分) 1、Viruses all have two phases to their eｘecution, the ( ) and the ( ). A、infection phase B、del＿ete phase C、attack phase D、creaｔe phase 2、( ) maybe a certain cause that some viruses infect upon. A、a day B、a time C、an external event on your PC D、a counter within the virus 3、Many viruses do harmful things such as ( ). A、deleting files B、simulating typos C、slowing your PC down D、changing random data on your disk 4、If a virus simply reproduce and have no cause for an attack phase, but it will still ( ) without your permission. A、stealing storage B、pilfer CPU cycles C、del＿ete files D、play music 5、Some viruses, with no attack phase, often damage the programs or disks they infect because they ( ). A、have bugs in them B、contain poor quality code C、steal storage D、show messages on your screen 第三题、判断题(每题 1 分，5 道题共 5 分) 1、Computer security is a branch of technology known as information security as applied to computers. 正确错误 2、Michelangelo is a file sector. 正确错误 3、Computer virus is remote from us. 正确错误 4、Computer virus may affect the your phisical health . 正确错误 5、The author thinks that understanding how an attacker approaches your computer system can help you protect it 正确错误 交卷 关 键 词： 计算机专业英语 计算机专业 英语 13 在线 测试

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