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OMG-OCUP2-FOUND100 Exam - Topic 4 Question 14 Discussion
Topic #: 4
Choose the correct answer:
Exactly two Player Instances are involved in the "Play Tennis" Use Case.
Which diagram depicts this scenario correctly?
A)
B)
C)
The provided image depicts a block diagram of a sensor controller represented as a state machine. The state machine transitions between the following states:
Initializing
Calibrating
Ready
Acquiring Data
The question specifies the state machine starts in the Ready state and the acquireData event triggers the transition.
Analyzing the image, we can identify the following behaviors for the scenario:
logStatus: This behavior is depicted in the diagram as the first action upon exiting the Ready state. It most likely logs the current state of the sensor controller.
deploy: The transition from Ready to Acquiring Data triggers thedeploybehavior. This likely involves preparing the sensor for data acquisition.
scanTarget: Upon entering the Acquiring Data state, thescanTargetbehavior is initiated. This suggests the sensor controller is actively collecting data from the target.
Therefore, the complete sequence of behaviors is logStatus, followed by deploy, and lastly scanTarget, before reaching the Acquiring Data state.
Justification for excluding other options:
Option A (deploy only) excludes the initial state logging and target scanning actions.
Option B (logStatus.deploy) excludes the target scanning upon entering the Acquiring Data state.
Option C (deploy, scanTarget) omits the initial state logging.
Option E (logStatus.deploy.scanTarget.logStatus) includes an extralogStatusaction after target scanning, which is not supported by the diagram.
In conclusion, based on the state machine diagram and the behavior descriptions, option D (logStatus.deploy.scanTarget) accurately reflects the sequence of actions that occur before the sensor controller arrives at the Acquiring Data state.
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