Android Process and Threads Lecture

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Questions and Answers

What is the highest priority type of process?

  • Background
  • Foreground (correct)
  • Empty
  • Service

What happens when the first component of an App is run and there is currently no process for that App?

  • The App is shut down
  • The system crashes
  • The old process is removed to reclaim memory
  • A new process is created (correct)

What is the main purpose of removing old processes?

  • To reduce system crashes
  • To improve system performance
  • To free up memory for new or more important processes (correct)
  • To enhance user experience

What happens when the onStop() method is called on a process?

<p>The process is considered a background process (C)</p> Signup and view all the answers

What is the purpose of the interrupt() or join() methods in thread management?

<p>To stop a thread (B)</p> Signup and view all the answers

What exception is thrown when a thread tries to access a view hierarchy that it did not create?

<p>CalledFromWrongThreadException (D)</p> Signup and view all the answers

How can a thread be stopped?

<p>By calling the interrupt() or join() method (B)</p> Signup and view all the answers

What is the main difference between a foreground process and a background process?

<p>Foreground processes are involved in on-going interactions, while background processes are not (C)</p> Signup and view all the answers

What is the purpose of a service process?

<p>To perform background tasks (D)</p> Signup and view all the answers

What is the lowest priority type of process?

<p>Empty (D)</p> Signup and view all the answers

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