Professional Courses
Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.
Categories
Interactive Games
Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
Typing
Memory
Math
English Adventures
Knowledge
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the visibility problem in multithreading?
💡 Hint: Think about how threads interact with shared resources.
Question 2
Easy
What does 'flag' generally signify in concurrent programming?
💡 Hint: Consider its boolean nature.
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 main issue does the example in the section illustrate?
- Thread safety
- Visibility problems
- Compiler optimizations
💡 Hint: Consider what happens when changes are not propagated.
Question 2
True or False: A spin loop will always see the updated value of a shared variable.
- True
- False
💡 Hint: Reflect on how threads read shared variables.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Given a scenario with multiple threads reading and writing to a shared boolean flag, outline a comprehensive strategy to ensure proper visibility.
💡 Hint: Consider how Java's memory model dictates visibility requirements.
Question 2
Analyze the effect of introducing sleep before setting the flag in the primary thread. Will it help in achieving visibility?
💡 Hint: Think about what guarantees visibility entails.
Challenge and get performance evaluation