【题目】 【翻译】信息过滤

1、[单选题]The data, when they are not encrypted, are called ________.

• A、plaintext
• B、ciphertext
• C、hypertext
• D、context

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2、[单选题]The larger the number of pixels in an image, and the lager the number of available gray scale levels, the better the ____ of the image.

• A、resolution
• B、identification
• C、recognition
• D、shade

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3、[单选题]Data ______ can reduce the amount of data sent or stored by partially eliminating inherent redundancy.

• A、compression
• B、conversion
• C、configuration
• D、compilation

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4、[单选题]A ______ copy is a copy of a current file made in order to protect against loss or damage.

• A、hard
• B、backup
• C、soft
• D、file

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5、[单选题]The infamous “Michelangelo” ____ strikes thousands of computers every year on March 6.

• A、cracker
• B、hacker
• C、virus
• D、disease

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