第71题： 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
答案解析与讨论：www.cnitpm.com/st/4107630.html

第72题： 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
答案解析与讨论：www.cnitpm.com/st/4107710057.html

第73题： is a process of developing a document that formally authorizes the existence of a project and provides the project manager with the authority to apply organizational resources to project activities.
A、 Develop Project Charter
B、Manage Project Knowledge
C、Monitor and Control Project work
D、Close project
答案解析与讨论：www.cnitpm.com/st/4107824333.html

第75题： （）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
答案解析与讨论：www.cnitpm.com/st/4108014764.html