[主观题] 【翻译】对称密钥密码系统

1、[单选题]Whereas the decimal system is based on 10, the ________ system is based on 2. There are only two digits in the latter system, 0 and 1.

• A、bilateral
• B、binary
• C、byte
• D、bit

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2、[单选题]Confidentiality of the message is not enough in a secure communication; ________ is also needed. The receiver needs to be sure of the sender’s identity.

• A、encryption
• B、authorization
• C、authentication
• D、encapsulation

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3、[单选题]The abbreviation FPGA stands for Field ________Gate Array.

• A、Program
• B、Programmable
• C、Programming
• D、Programmer

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4、[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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5、[主观题]【翻译】 电子资金转帐

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