M Mr. Dubey 🎓 Coach ⭐ 103.11K Points 📊 Cloud Computing Q. NameNode and DataNode do communicate using (A) active pulse (B) heartbeats (C) h-signal (D) data pulse 👁️ Show Answer 💬 Discuss 🔗 Share ⚡Menu ✅ Correct Answer: (B) heartbeats