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Top Perplexity AI Engineer Interview Questions

Preparing for an AI Engineer position at leading companies such as Perplexity AI requires a deep understanding of algorithms, system design, and practical engineering tradeoffs. In this guide, we tackle some of the most advanced and frequently asked interview questions, providing detailed solutions and explanations. 

A common challenge in AI workflows is orchestrating tasks with complex dependencies. This is often modeled as a Directed Acyclic Graph (DAG), where nodes represent tasks and edges represent dependencies. A task can only be executed when all its dependencies have been completed. The problem requires designing and implementing a system to execute such tasks in the correct order.