[Solved] Which statement best describes how Ruby threads are scheduled and executed? — Ans: Ruby threads are native OS threads scheduled preemptively by the OS. | Ruby

Ruby - Concurrent Programming

Which statement best describes how Ruby threads are scheduled and executed?

ARuby threads are native OS threads scheduled preemptively by the OS.

BRuby threads are green threads managed by Ruby interpreter with cooperative scheduling.

CRuby threads run sequentially and never in parallel.

DRuby threads require manual switching to run concurrently.

Step-by-Step Solution

Solution:

Step 1: Understand Ruby thread model
Modern Ruby (MRI) uses native OS threads scheduled preemptively by the operating system.
Step 2: Eliminate incorrect models
Green threads and cooperative scheduling are older models not used in current Ruby. Threads can run in parallel on multiple cores.
Final Answer:
Ruby threads are native OS threads scheduled preemptively by the OS. -> Option A
Quick Check:
Ruby threads = native OS threads with preemptive scheduling [OK]

Quick Trick: Ruby threads are native OS threads, scheduled preemptively [OK]

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Which statement best describes how Ruby threads are scheduled and executed?