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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What does the happens-before relationship ensure?
💡 Hint: Think about how threads share data.
Question 2
Easy
What does a volatile variable guarantee?
💡 Hint: Remember how variables can be read and written among threads.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What guarantees visibility when one thread writes to a volatile variable and another thread reads it?
- The write is delayed
- All writes are synchronized
- The write happens-before the read
💡 Hint: Consider how volatile variables work.
Question 2
True or False: Actions before a thread starts are not visible to the thread.
- True
- False
💡 Hint: Revisit the concept of thread start.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Describe how you would use multiple threads to count to 100 and ensure that the correct final count is printed. Include the use of synchronization to ensure visibility of the count.
💡 Hint: Think about thread safety with shared resources.
Question 2
Given a situation where Thread A modifies a configuration variable while Thread B reads it, illustrate how to structure the code using volatile variables to guarantee current values are seen.
💡 Hint: Focus on the volatile keyword's behavior.
Challenge and get performance evaluation