Practice Atomicity (20.2.3) - Java Memory Model and Thread Safety - Advance Programming In Java

Practice: Atomicity

Lesson 20.2.3Java Memory Model and Thread Safety

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9 questions

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4 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What does atomicity refer to in concurrent programming?
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Think about how transactions are processed.
Question 2.
Which basic data types are atomic in Java?
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These are the simplest types in Java.
3Question 3.
What does atomicity ensure in concurrent programming?
- Operations are executed quickly
- Operations are completed fully and indivisibly
- Operations can be interrupted
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Focus on the meaning of 'atomic' in programming.
4Question 4.
Are compound actions like x++ atomic operations?
- True
- False
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Consider what constitutes an atomic operation.
Question 5.
Consider a multitasking scenario in a factory where two assembly lines try to update a shared counter of produced items. Design a solution that ensures that the counter updates are atomic. What synchronization mechanisms would you employ?
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Think about how you would control access to a shared resource.
Question 6.
Write a Java simulation that demonstrates a race condition when two threads increment a shared counter. Explain how this condition arises and how to fix it using synchronization.
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Focus on shared mutable state and access control.

5 more questions in this section. Enroll free to practise them all.