Virtual Labs

Design the time sequence model from use case depicting the interaction of the objects.

1. In a sequence diagram, what is the primary purpose of a 'lifeline'?

a: To represent the sequence of events in chronological order Explanation

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b: To show the duration of an object's existence Explanation

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c: To illustrate conditional branching Explanation

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d: To depict the flow of data between objects Explanation

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2. Which of the following statements is true about drawing time sequence diagrams?

a: A time sequence diagram is used to visualize the interactions between objects in a system over a period of time. Explanation

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b: A time sequence diagram is used to show the structural relationships between objects in a system. Explanation

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c: A time sequence diagram is used to illustrate the flow of control within a single object in a system. Explanation

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d: A time sequence diagram is used to document the architecture of a system. Explanation

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3. When drawing a time sequence diagram, which of the following statements is true?

a: The vertical axis represents the objects involved in the system, while the horizontal axis represents time. Explanation

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b: The vertical axis represents time, while the horizontal axis represents the objects involved in the system. Explanation

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c: The vertical axis represents the messages exchanged between objects, while the horizontal axis represents time. Explanation

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d: The vertical axis represents the messages exchanged between objects, while the horizontal axis represents time. Explanation

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4. Which of the following is NOT a component of a sequence diagram?

a: Objects Explanation

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b: Messages Explanation

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c: Lifelines Explanation

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d: State transitions Explanation

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5. In a sequence diagram, time is typically represented in what direction?

a: Horizontally from left to right. Explanation

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b: Vertically from top to bottom. Explanation

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c: Diagonally from top left to bottom right. Explanation

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d: It's not represented in a sequence diagram. Explanation

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