搜题
王老师:19139051760(拨打)
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第1题

( ) A (an) _______ is a destructive program which fills a computer system with self-replicating information, clogging（堵塞
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第2题

( ) All data transmitted over the Internet _______ small units of information called packets. A.is used for B.is added
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第3题

( ) People who gain unauthorized access to a computer system for malicious purposes are called A.crackers B.hackers C
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第4题

( ) The largest category of computer criminals is . A.hackers B.programmers C.employees D.employers
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