[单选题] Which of the following components can be used to attach peripheral devices to the motherboard as plug-in cards or via cables?

1、[多选题]With middleware we can

• A、allow computations to communicate with one another
• B、keep computations largely isolated from undesirable interactions
• C、run programs on a centralized computer system only
• D、run programs on different computer system

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2、[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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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]Information stored in semiconductor RAM is

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

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5、[多选题]The three desiderata of memory system are

• A、closely approximated today
• B、Less approximated tomorrow
• C、exclusive
• D、independent

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