[单选题] We’ll go to Paris for our holiday,()it isn’too expensive.

1、[多选题]Viruses can delay their attack for().

• A、months
• B、weeks
• C、days
• D、years

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2、[多选题]The Application layer in TCP/IP Model is correspond to＿＿＿＿＿＿＿＿in OSI Model

• A、Network Layer
• B、Session Layer
• C、Application Layer
• D、Presentation Layer
• E、Transport Layer

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3、[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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4、[多选题]In order to increase our computer’s performance we need to

• A、have a much larger main memory
• B、have a L2 cache
• C、buy a L2 cache
• D、buy a L1 cache

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5、[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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