[单选题] Which of the following description is WRONG about Wi-Fi?

1、[单选题]Electronic commerce may be defined as the entire set of processes that suport()activities on a(n)()and involve information analysis.

• A、society,human
• B、personal,society
• C、commercial,network

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2、[多选题]Active Directory can help you().

• A、manage every resource with a single logon
• B、build a complex international network
• C、get off the limits of down level networks
• D、deliver complete enterprise security by itself

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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]The two most common types of scanners are()and()

• A、hand-held scanners
• B、handler scanners
• C、flatbed scanners
• D、auto scanners

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5、[多选题]Information stored in semiconductor RAM is

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

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