An external scanning system is to communicate with our video rental system to se
ID: 3831024 • Letter: A
Question
An external scanning system is to communicate with our video rental system to send us the bar code information from the videos that are scanned. Which of the following should this system use to communicate with our system?
a. a control class
b. an interface
a boundary class
d. an entity class
Which of the following is an entity class?
a. OrderWindow
b. PlaceOrder
c. Customer
d. OrderControl
"Martin and you are working on a video rental system. Martin has identified Video, Customer, and Payment as classes. What type of classes are these?"
Control as they coordinate activities across use casesb.
b. Entity as they model persistent data
SuperClasses
d. Boundary as they are the point of contact for users to our system
Messages in sequence diagram become
a. Methods in classes in the class diagram
b. Use cases in use case diagram
c. Attributes in classes in the class diagram
d. Actors in use case diagram
Which sequence is better?
a. Actor-entity-control-boundary
b. Actor-boundary-control-entity
Actor-entity-boundary-control
d. Actor-control-entity-boundary
a. a control class
b. an interface
c.a boundary class
d. an entity class
Which of the following is an entity class?
a. OrderWindow
b. PlaceOrder
c. Customer
d. OrderControl
"Martin and you are working on a video rental system. Martin has identified Video, Customer, and Payment as classes. What type of classes are these?"
a.Control as they coordinate activities across use casesb.
b. Entity as they model persistent data
c.SuperClasses
d. Boundary as they are the point of contact for users to our system
Messages in sequence diagram become
a. Methods in classes in the class diagram
b. Use cases in use case diagram
c. Attributes in classes in the class diagram
d. Actors in use case diagram
Which sequence is better?
a. Actor-entity-control-boundary
b. Actor-boundary-control-entity
c.Actor-entity-boundary-control
d. Actor-control-entity-boundary
Explanation / Answer
1. boundary class - A boundary class can be used here for this interaction. Scanner class can send in the barcodes as inputs to our system.
2. Customer is an entity class or a POJO class in terms of java that can hold the information about the current bean object holding persistent data.
3 Entity class - as they save persistent object
4.Methods in classes in the class diagram
5.Actor-entity-boundary-control
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