Databricks Software Engineer Interview: Tackling CIDR and IP Address Challenges

Software Engineering
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databricks | Software Engineer | Interview Experience

Interview Date: Not specified
Result: Not specified
Difficulty: Not specified

Interview Process

The interview focused on the concept of CIDR (Classless Inter-Domain Routing) and its relationship with IP addresses. The candidate was asked to work with an array of CIDR blocks that map to allow/deny rules and a target IP address. The task was to identify the first matching rule for the given IP address. The interviewer was patient and provided hints throughout the process, assisting the candidate in understanding the problem.

Technical Questions

  1. Explain CIDR and its purpose.
  2. Given an array of CIDR blocks and a target IP address, determine the first matching rule.
  3. Follow-up: If provided with a CIDR instead of an IP address, how should it be interpreted?

Tips & Insights

  • Don’t hesitate to ask the interviewer for clarification if you don’t understand a concept.
  • Familiarize yourself with bit operations and CIDR notation before the interview, as they are crucial for networking-related questions.