READ_ONLY_ACCESS
[
  {
    "id": "ct-w11-000",
    "front": "Week 11 Diagnostic: What is the key difference between Concurrency and Parallelism?",
    "back": "Answer: A — Concurrency structures tasks to make progress independently (interleaving or parallel); parallelism physically executes multiple tasks simultaneously across multiple cores."
  },
  {
    "id": "ct-w11-001",
    "front": "Week 11 Diagnostic: An operation that either completes entirely or leaves state unchanged without intermediate observable states is called:",
    "back": "Answer: B — Atomic operations are indivisible and guarantee safe state transitions in concurrent systems."
  }
]