第70題： 關于信息系統(tǒng)崗位人員安全管理的描述，不正確的是（）。
A、業(yè)務應用操作人員不能由系統(tǒng)管理員兼任
B、業(yè)務開發(fā)人員不能兼任系統(tǒng)管理員
C、系統(tǒng)管理員可以兼任數(shù)據(jù)庫管理員
D、關鍵崗位人員處理重要事務或操作時，應保持二人同時在場
答案解析與討論：www.shc2b.com/st/4107524114.html

第71題： Big data can be described by four characteristics: Volume,Variety, locity and Veracity.（）refers to the quantity of generated and stored data.
A、Volume
B、Variety
C、Velocity
D、Veracity
答案解析與討論：www.shc2b.com/st/4107630.html

第72題： is the extension of internet connectivity into physical devices and everyday objects.Embedded with electronics,internet connectivity and other forms of hardware (such as sensors), these devices can communicate and interact with others over the Internet ,and they can be remotely monitored and controlled.
A、Cloud Computing
B、Internet of things
C、Block Chain
D、Artificial Intelligence
答案解析與討論：www.shc2b.com/st/4107710057.html

第74題： ()is a process of developing a detailed description of the project and product
A、collect requirements
B、Definition scope
C、validate scope
D、Control range
答案解析與討論：www.shc2b.com/st/410791250.html

第75題： （）is a process of monitoring the status of the project to update the project costs and manage changes ti the cost baseline.
A、Plan Cost Management
B、Estimate Costs
C、Determine Budget
D、Control costs
答案解析與討論：www.shc2b.com/st/4108014764.html