M Mr. Dubey 🎓 Coach ⭐ 102.92K Points 📊 Hadoop Q. How does HDFS ensure fault tolerance? (A) Data compression (B) Parallel processing (C) Data replication (D) Multiple NameNodes 👁️ Show Answer 💬 Discuss 🔗 Share ⚡Menu ✅ Correct Answer: (C) Data replication Explanation: HDFS replicates each data block across multiple nodes to tolerate hardware failures.