● The connection between two networks to form an internet is handled by a machine known as a__(71)__.
 

（71）A．bridge   

B．client 

C．router   

D．switch

● One tool that is useful during both analysis and design is the__(72)__，which is a pictorial representation of the items of information(entities) within the system and the relationships between these pieces of information.
 

（72）A．data dictionary    

B．dataflow diagram

C．use case diagram

D．entity-relationship diagram

●

（）is one of the techniques used for estimating activity durations.

（73）A．Analogous Estimating

B．Precedence Diagramming Method (PDM)

C．Dependency Determination 

D．Schedule network Templates

● Project Time Management includes the processes required to manage timely completion of the project， these processes interact with each other. __(74)__is following the process- Estimate Activity Durations.
 

（74）A．Develop Schedule  

B．Estimate Activity Resources

C．Define Activities

D．Sequence Activities

● __(75)__is not the tool name for quality controlling used in the figure below.
 

（75）A．Cause and Effect Diagrams  

B．Ishikawa Diagrams

C．Fishbone Diagrams 

D．Scatter Diagram