M Mr. Dubey 🎓 Coach ⭐ 104.58K Points 📊 Hadoop Q. What happens if NameNode fails in Hadoop 1.x? (A) Cluster continues normally (B) Only writes stop (C) Entire cluster becomes unavailable (D) Only one node fails 👁️ Show Answer 💬 Discuss 🔗 Share ⚡Menu ✅ Correct Answer: (C) Entire cluster becomes unavailable Explanation: NameNode is a single point of failure in Hadoop 1.x.