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Vendor: IBM
Exam Code: C2140-637
Exam Name: Requirements Management with Use Cases (Part 2)

Given: Consider the following set of initial user requests from a telephone company about a new customer service system: * The telephone company customer service system shall be able to record and answer questions about telephone installations. * When a customer requests a new telephone, the service representative shall record the customer’s name, address, assigned phone installer, and a projected time of the installation. * At the end of each day, the technicians shall record their work. * Start time shall include the year, month, day, hour, and minute. What is the most appropriate classification name for one of the actors in these system requirements?

A.    User
B.    Calendar
C.    Customer
D.    Installer

Answer: D

What type of relationship exists between use cases and actors?

A.    Arrow association
B.    Extends association
C.    Communicates association
D.    Generalization association

Answer: C

What does the basic flow of events in a use case describe?

A.    Typical use of the system by its actors
B.    Interactions between the use case and other use cases
C.    Least complicated interactions between the system and the actors
D.    Choices an actor makes while interacting with the system

Answer: A

Which of the following are properties of a use case? (Select all that apply.)

A.    Name
B.    Design constraints
C.    Special requirements
D.    Supplementary specifications
E.    Flow of events
F.    Preconditions

Answer: ACEF

What does a use-case diagram show?

A.    Software requirements
B.    Flow of events
C.    User interface screen layouts
D.    What the system is supposed to do

Answer: D

What does a supplementary specification include?

A.    Non-functional requirements associated with the entire system
B.    Non-functional requirements associated with a particular use case
C.    <<include>> and <<extend>> relationships associated with a particular use case
D.    Use-case diagram for the entire system

Answer: A

What question helps identify the actors in software requirements?

A.    Who will be using the system?
B.    What subsystems will be in the system?
C.    Who will be paying for the system?
D.    Who will be designing the system?

Answer: A

What question identifies use cases in software requirements?

A.    What goal will actors achieve by using the system?
B.    What do users need to know when they use the system?
C.    Why is data being stored in the system?
D.    What subsystems are in the software?

Answer: A

What is an actor?

A.    Role a tester plays when testing the system
B.    Role a person or thing plays when interacting with the system
C.    Anyone who has a vested interest in the outcome of the system
D.    Anyone who will purchase the system

Answer: B

Which of the following may result from a functional decomposition of use cases? (Select all that apply.)

A.    Requirements become fragmented and lose their context
B.    Brief descriptions are very long
C.    Requirements become untestable
D.    Use cases do not achieve clear goals for the actors

Answer: AD

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