Threads & Concurrency Quiz

What is the benefit of designing multithreaded applications?

• Simplifies code and increases efficiency

• Allows for easier resource sharing

• Enables responsiveness in user interfaces

• All of the above

What is the difference between concurrency and parallelism?

• Concurrency allows for more than one task to make progress, while parallelism implies simultaneous execution of multiple tasks

• Concurrency and parallelism are the same thing

• Concurrency only applies to single-core systems, while parallelism applies to multi-core systems

• Parallelism allows for more than one task to make progress, while concurrency implies simultaneous execution of multiple tasks

Which type of parallelism distributes subsets of the same data across multiple cores?

• Data parallelism

• Task parallelism

• Both data and task parallelism

• None of the above

What is Amdahl's Law used for?

• Identifying performance gains from adding additional cores to an application

• Determining the speedup of a parallel application

• Calculating the proportion of serial and parallel components in an application

• All of the above

Which thread library is a POSIX standard API for thread creation and synchronization?

• Pthreads

• Windows threads

• Java threads

• All of the above

What is the purpose of a thread pool?

• To create a fixed number of threads that await work

• To dynamically create threads as needed

• To manage the lifecycle of threads

• To synchronize access to shared resources

Which implicit threading method is used in Apple's macOS and iOS operating systems?

• Thread pools

• Fork-Join

• Grand Central Dispatch

• Intel Threading Building Blocks

What is the purpose of thread-local storage?

• To allow each thread to have its own copy of data

• To share data between threads

• To synchronize access to shared resources

• To manage the lifecycle of threads

Which threading model allows many user-level threads to be mapped to many kernel threads?

• Many-to-One

• One-to-One

• Many-to-Many

• Two-level Model

What is the primary API for Windows applications?

• Pthreads

• Windows threads

• Java threads

• OpenMP