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What difficulty level is this coding question?

This is a hard difficulty Coding & Algorithms question, commonly asked during Take-home Project rounds at Anthropic.

What role is this question designed for?

This question is commonly asked for Machine Learning Engineer candidates at Anthropic during technical interviews.

Implement a Simplified DNS Resolver | Anthropic Coding Question

Quick Overview

This question evaluates understanding of DNS semantics (name normalization, A and CNAME records, alias chains and cycle detection), robust error handling, cache design, and safe concurrent access when implementing a simplified resolver.

hard
Anthropic
Coding & Algorithms
Machine Learning Engineer

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