hoffer_msad7_tif_07c
Modern Systems Analysis & Design, 7e (Hoffer)
Chapter 7 Appendix: Object-Oriented Analysis and Design: Sequence Diagrams
1) Sequence diagrams show the static structure of data and the operations that act on the data. Answer: FALSE
Diff: 2 Page Ref: 241
2) Sequence diagrams represent dynamic models of interactions between objects.
Answer: TRUE
Diff: 2 Page Ref: 241
3) Sequence diagrams represent dynamic models of how objects change their states in response to events.
Answer: FALSE
Diff: 3 Page Ref: 241
4) Sequence is a type of interaction diagrams.
Answer: TRUE
Diff: 2 Page Ref: 240
5) A sequence diagram depicts the interactions among objects during a certain period of time. Answer: TRUE
Diff: 2 Page Ref: 241
6) A simple message is a message in which the sender does not have to wait for the recipient to handle the message.
Answer: FALSE
Diff: 2 Page Ref: 242
7) On a sequence diagram, a synchronous message is shown as a half arrowhead.
Answer: FALSE
Diff: 2 Page Ref: 242
8) Objects communicate with one another by sending messages.
Answer: TRUE
Diff: 2 Page Ref: 242
9) Which of the following represent dynamic models of interactions between objects?
A) use cases
B) class diagrams
C) state diagrams
D) sequence diagrams
Answer: D
Diff: 2 Page Ref: 241
10) Types of interaction diagrams include:
A) state diagrams
B) sequence diagrams
C) data flow diagrams
D) component diagrams
Answer: B
Diff: 3 Page Ref: 240
11) Which of the following depicts the interactions among objects during a certain period of time?
A) class diagrams
B) data flow diagrams
C) sequence diagrams
D) collaboration diagrams
Answer: C
Diff: 2 Page Ref: 241
12) Which of the following shows the time period during which an object performs an operation, either directly or through a call to some subordinate operation?
A) asynchronous message
B) activation
C) critical path
D) simple message
Answer: B
Diff: 2 Page Ref: 242
13) A message that transfers control from the sender to the recipient without describing the details of the communication best describes:
A) predetermined message
B) implicit message
C) simple message
D) flag
Answer: C
Diff: 2 Page Ref: 242
14) A message in which the sender does not have to wait for the recipient to handle the message best describes:
A) synchronous message
B) simple message
C) asynchronous message
D) half-duplex message
Answer: C
Diff: 2 Page Ref: 242
15) A type of message in which the caller has to wait for the receiving object to finish executing the called operation before it can resume execution itself is a(n):
A) synchronous message
B) simple message
C) asynchronous message
D) half-duplex message
Answer: A
Diff: 2 Page Ref: 242
16) On a sequence diagram, the destruction of an object is shown as a:
A) wavy line
B) large X
C) transverse tick mark
D) filled in circle
Answer: B
Diff: 2 Page Ref: 243
17) When an operation calls upon another operation within the same object, this is known as:
A) a recursive join
B) a nested operation
C) self-delegation
D) a nested state
Answer: C
Diff: 2 Page Ref: 243
18) Sequence diagrams can be presented in:
A) instance or generic form
B) logical or physical form
C) sequential or nonsequential form
D) specific or nonspecific form
Answer: A
Diff: 2 Page Ref: 244
19) In UML, a ________ represents dynamic models of interactions between objects. Answer: sequence diagram
Diff: 2 Page Ref: 241
20) ________ is a type of interaction diagrams.
Answer: Sequence
Diff: 2 Page Ref: 240
21) A ________ depicts the interactions among objects during a certain period of time. Answer: sequence diagram
Diff: 2 Page Ref: 241
22) An object is ________ at the point marked by X.
Answer: destroyed
Diff: 1 Page Ref: 243
23) ________ is the time period during which an object performs an operation.
Answer: Activation
Diff: 2 Page Ref: 242
24) A ________ is a type of message in which the caller has to wait for the receiving object to finish executing the called operation before it can resume execution itself.
Answer: synchronous message
Diff: 3 Page Ref: 242
25) A ________ is a message that transfers control from the sender to the recipient without describing the details of the communication.
Answer: simple message
Diff: 2 Page Ref: 242
26) When an operation calls another operation within the same object, this is referred to as
________.
Answer: self-delegation
Diff: 2 Page Ref: 243
27) Briefly define a type of interaction diagrams.
Answer: A sequence diagram is a type of interaction diagrams that is mentioned in the textbook. A sequence diagram depicts the interactions among objects during a certain period of time.
Diff: 3 Page Ref: 240-241
28) What is meant by activation? How is it shown on a sequence diagram?
Answer: Activation is the time period during which an object performs an operation. Activation is shown by superimposing a thin rectangle on the object's lifeline.
Diff: 3 Page Ref: 242
29) What is a synchronous message? Asynchronous message? How are each of these messages shown on a sequence diagram?
Answer: A synchronous message is a type of message in which the caller has to wait for the receiving object to finish executing the called operation before it can resume execution itself. A synchronous message is shown as a full, solid arrowhead. An asynchronous message is a message in which the sender does not have to wait for the recipient to handle the message. An asynchronous message is shown as a half arrowhead.
Diff: 3 Page Ref: 242
30) Define sequence diagram.
Answer: A sequence diagram represents dynamic models of interactions between objects. Diff: 2 Page Ref: 241