Freecharge Payments Technologies Pvt Ltd Interview Question

1. Question related to Array and Graphs. 2. Public Key Encryption Vs Private Key Encryption. 3. How NodeJs works. 4. How will you scale an existing NodeJs application to one trillion requests/minute. 5. System Design - UBER 6. Token Mechanism and replacement. 7. Hashing Vs Encryption Vs Encoding 8. No of IPs in range 192.168.0.1/24