R Rati Dubey 🎓 Tutor III ⭐ 8.55K Points 📊 Hadoop Q. What is speculative execution in MapReduce? (A) Running a task on the fastest node (B) Running a duplicate task to finish early (C) Retrying failed tasks automatically (D) Compressing job output 👁️ Show Answer 💬 Discuss 🔗 Share ⚡Menu ✅ Correct Answer: (B) Running a duplicate task to finish early Explanation: Speculative execution runs a backup of slow tasks on another node to speed up job completion.