Implement IP Address Arithmetic
Company: OpenAI
Role: Software Engineer
Category: Coding & Algorithms
Difficulty: hard
Interview Round: Onsite
Quick Answer: This question evaluates proficiency in IP addressing, parsing and validation, binary/address-space arithmetic, CIDR subnet calculation, and formatting for both IPv4 and IPv6, testing bit-level manipulation and string-processing skills in the Networking and Coding & Algorithms domain.