[单选题] The history of programming languages can be traced back almost t o the invention of the()computer in th 1940s.

1、[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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2、[多选题]The equipment().

• A、transfers the number of bits in parallel
• B、manipulates digital information internally in word units
• C、transfers the number of bits in serial form
• D、manipulates digital information internally in serial form

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3、[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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4、[多选题]Instruction format in RISC has

• A、many kinds
• B、one or a few kinds
• C、one kind
• D、a few kinds

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5、[多选题]which is the threat to computer security in the following choices?

• A、Computer Criminals
• B、Computer Crime
• C、earthquake
• D、Human Errors

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