Practice Selectors - 21.2.4 | 21. Java I/O and NIO | Advanced Programming
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Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is a selector in Java NIO?

💡 Hint: Think about how it improves resource usage.

Question 2

Easy

Name one reason why non-blocking I/O is beneficial.

💡 Hint: Consider how this affects application performance.

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 do selectors allow in Java NIO?

  • Handling only one channel at a time
  • Monitoring multiple channels with a single thread
  • Blocking I/O operations

💡 Hint: Consider how this impacts server performance.

Question 2

True or False: Selectors block the application from executing while waiting for I/O.

  • True
  • False

💡 Hint: Focus on the purpose of non-blocking I/O.

Solve and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

Design a chat server using Java NIO selectors to handle multiple clients. Explain how you would manage incoming messages and connections.

💡 Hint: Consider how you would establish communication between various clients efficiently.

Question 2

Describe the performance implications of using selectors over traditional blocking I/O techniques in a server application.

💡 Hint: Think about how a fewer number of threads influence server load and responsiveness.

Challenge and get performance evaluation