Basics of Threads Quiz

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Test your threading knowledge

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Alan Ramirez

Mexico

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Basics of Threads Quiz


Basics of Threads QuizOnline version Test your threading knowledge by Alan Ramirez 1 What is a thread in programming? a A compiler feature for parallelism b A function that runs only on the main thread c The smallest unit of execution within a process that shares memory. d A separate process with its own memory space 2 How does a thread differ from a process? a A thread cannot run on multiple CPU cores b Threads are independent with separate resources c A process is always faster than a thread d A thread shares memory with other threads in the same process; a process has its own memory space. 3 What does thread safety mean? a Code that runs only in single-thread mode b Code that functions correctly when accessed by multiple threads concurrently. c Code that prevents any thread from executing d Code that runs faster in isolation 4 What does join do in multithreading? a Locks a thread to prevent execution b Starts a new thread in the pool c Waits for a thread to finish and optionally collects its result. d Terminates a thread immediately 5 What is a race condition? a A compile-time optimization issue b Two or more threads access shared data concurrently causing a result with inconsistent state. c A deliberate pause between thread executions d A condition where threads race to complete first 6 What is deadlock? a A condition where threads run without using CPU b Two or more threads wait forever for each other to release locks. c A thread that finishes too quickly causing scheduler issues d A thread that cannot start due to a missing resource 7 What is a mutex (lock) used for? a A type of thread that runs on a GPU b A debugging tool for race conditions c A lock that ensures exclusive access to a shared resource. d A memory allocator for threads 8 What is a thread pool? a A mechanism to create processes instead of threads b A single long-running thread c A group of worker threads reused to perform tasks. d A debugging technique for threads 9 Which statement about synchronization primitives is true? a They prevent threads from existing b They make code always faster regardless of context c They coordinate access to shared resources to prevent data races. d They remove the need for any shared data 10 What does detaching a thread mean? a The thread is converted into a process b The thread shares its resources with the main thread c The thread is paused until explicitly resumed d The thread runs independently and the program doesn't wait for it. Explicación 1 Rationale: Threads are lightweight execution units that share a process's memory. 2 Rationale: Threads within a process share the same address space, while processes do not. 3 Rationale: Thread safety ensures correctness under concurrent access. 4 Rationale: join synchronizes by waiting for the target thread to complete. 5 Rationale: Unsynchronized access leads to unpredictable outcomes. 6 Rationale: Circular wait for locks causes deadlock. 7 Rationale: Mutexes prevent concurrent conflicting access. 8 Rationale: Pools amortize thread creation costs by reusing workers. 9 Rationale: Primitives like locks/semaphores enforce orderly access. 10 Rationale: Detached threads continue independently and are not joined.

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Basics of Threads Quiz

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About this activity

Created by

Download the paper version to play

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Basics of Threads QuizOnline version

by Alan Ramirez

What is a thread in programming?

How does a thread differ from a process?

What does thread safety mean?

What does join do in multithreading?

What is a race condition?

What is deadlock?

What is a mutex (lock) used for?

What is a thread pool?

Which statement about synchronization primitives is true?

What does detaching a thread mean?

Explicación