[多选题] Many viruses do harmful things such as().

1、[多选题]Security is usually enforced through().

• A、auditing
• B、encryption
• C、access control
• D、data storing
• E、data retrieving

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2、[多选题]According to the physical size of computers we can classify the computers into

• A、minicomputer
• B、microcompute
• C、mainframe
• D、supercomputer

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3、[多选题]()is a type of eｘecutable file.

• A、EXE file
• B、COM file
• C、JPG file
• D、TXT file

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4、[多选题]Newer ideas in computing such as()have radically altered the traditional concepts that once determined program form and function

• A、distributed computing
• B、software engineering
• C、artificial intelligence
• D、parallel computing
• E、data mining

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5、[多选题]Information stored in semiconductor RAM is

• A、volatile
• B、permanent
• C、non volatile
• D、non permanent

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