第64題： 某項(xiàng)目承包者設(shè)計該項(xiàng)目有0.5的概率獲利200000美元。0.3的概率虧損50000美元，還有0.2的概率維持平衡。該項(xiàng)目的期望值貨幣的價值為（ ）美元。
A、20000
B、85000
C、50000
D、180000
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第65題： 數(shù)字簽名技術(shù)屬于信息系統(tǒng)安全管理中保證信息（）技術(shù)。
A、保密性
B、可用性
C、完整性
D、可靠性
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第66題： （ ）不屬于知識產(chǎn)權(quán)的基本特征是。
A、時間性
B、地域性
C、專有性
D、實(shí)用性
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第68題： （  ）The capability provided to the consumer is to use provider’s applications running on a cloud infrasture. The applications are accessible from various client devices through either a thin client inface, such as a web browser(e.g.,erb-based E- mail),or aprogram interface.
A、laaS     
B、PaaS   
C、saaS    
D、DaaS答案解析與討論：www.conferencecallsmadeeasy.com/st/3267811210.html

第69題： （  ）refers to the application of the internet and other information technology in conventional industries .It is an incomplete equation where various internet(mobile internet,cloud computing,big data or internet of things) can be added to other fileds, fostering new industries and business development.
A、 internet plus
B、industry 4.0
C、big data
D、cloud computing
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第70題： For any information system to serve its purpose, the information must be(  )when it is needeD
A、integral
B、available
C、irreplaceable
D、confidential
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