Public task directory

Technical interview practice tasks

Every entry below is a crawlable link to a unique public task page. This directory complements the interactive filters and keeps the complete catalog connected through standard pagination.

Page 166 of 386 · 18,491 tasks

Knowledge Check · Hard · 1 min

While reviewing recsys online experiments, one user sees both algorithms across devices. Which action fixes it, and which check proves it worked

While reviewing recsys online experiments, one user sees both algorithms across devices. Which action fixes it, and which check proves it worked?

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Knowledge Check · Hard · 1 min

While reviewing recsys online experiments, a new carousel spikes only on day one. Which action fixes it, and which check proves it worked

While reviewing recsys online experiments, a new carousel spikes only on day one. Which action fixes it, and which check proves it worked?

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Knowledge Check · Medium · 1 min

While reviewing recsys online experiments, a test aims to improve meaningful engagement. Which action best addresses the problem

While reviewing recsys online experiments, a test aims to improve meaningful engagement. Which action best addresses the problem?

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Knowledge Check · Medium · 1 min

While reviewing recsys online experiments, clicks rise while purchases fall. Which action best addresses the problem

While reviewing recsys online experiments, clicks rise while purchases fall. Which action best addresses the problem?

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Knowledge Check · Medium · 1 min

While reviewing recsys online experiments, one user sees both algorithms across devices. Which action best addresses the problem

While reviewing recsys online experiments, one user sees both algorithms across devices. Which action best addresses the problem?

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Knowledge Check · Medium · 1 min

While reviewing recsys online experiments, a new carousel spikes only on day one. Which action best addresses the problem

While reviewing recsys online experiments, a new carousel spikes only on day one. Which action best addresses the problem?

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Knowledge Check · Easy · 1 min

What is the main purpose of Ranking score in recsys ranking

What is the main purpose of Ranking score in recsys ranking?

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Knowledge Check · Easy · 1 min

What is the main purpose of Position bias in recsys ranking

What is the main purpose of Position bias in recsys ranking?

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Knowledge Check · Easy · 1 min

What is the main purpose of Multi-objective rank in recsys ranking

What is the main purpose of Multi-objective rank in recsys ranking?

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Knowledge Check · Easy · 1 min

What is the main purpose of Reranking in recsys ranking

What is the main purpose of Reranking in recsys ranking?

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Knowledge Check · Hard · 1 min

While reviewing recsys ranking, candidates need a final personalized order. Which action fixes it, and which check proves it worked

While reviewing recsys ranking, candidates need a final personalized order. Which action fixes it, and which check proves it worked?

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Knowledge Check · Hard · 1 min

While reviewing recsys ranking, top items collect clicks because they are top. Which action fixes it, and which check proves it worked

While reviewing recsys ranking, top items collect clicks because they are top. Which action fixes it, and which check proves it worked?

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Knowledge Check · Hard · 1 min

While reviewing recsys ranking, relevant results lack marketplace diversity. Which action fixes it, and which check proves it worked

While reviewing recsys ranking, relevant results lack marketplace diversity. Which action fixes it, and which check proves it worked?

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Knowledge Check · Hard · 1 min

While reviewing recsys ranking, the top list contains near duplicates. Which action fixes it, and which check proves it worked

While reviewing recsys ranking, the top list contains near duplicates. Which action fixes it, and which check proves it worked?

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Knowledge Check · Medium · 1 min

While reviewing recsys ranking, candidates need a final personalized order. Which action best addresses the problem

While reviewing recsys ranking, candidates need a final personalized order. Which action best addresses the problem?

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Knowledge Check · Medium · 1 min

While reviewing recsys ranking, top items collect clicks because they are top. Which action best addresses the problem

While reviewing recsys ranking, top items collect clicks because they are top. Which action best addresses the problem?

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Knowledge Check · Medium · 1 min

While reviewing recsys ranking, relevant results lack marketplace diversity. Which action best addresses the problem

While reviewing recsys ranking, relevant results lack marketplace diversity. Which action best addresses the problem?

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Knowledge Check · Medium · 1 min

While reviewing recsys ranking, the top list contains near duplicates. Which action best addresses the problem

While reviewing recsys ranking, the top list contains near duplicates. Which action best addresses the problem?

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Knowledge Check · Easy · 1 min

What is the main purpose of Two-stage serving in recsys serving scale

What is the main purpose of Two-stage serving in recsys serving scale?

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Knowledge Check · Easy · 1 min

What is the main purpose of Feature freshness in recsys serving scale

What is the main purpose of Feature freshness in recsys serving scale?

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Knowledge Check · Easy · 1 min

What is the main purpose of Cache key in recsys serving scale

What is the main purpose of Cache key in recsys serving scale?

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Knowledge Check · Easy · 1 min

What is the main purpose of Fallback list in recsys serving scale

What is the main purpose of Fallback list in recsys serving scale?

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Knowledge Check · Hard · 1 min

While reviewing recsys serving scale, scoring the full catalog is too slow. Which action fixes it, and which check proves it worked

While reviewing recsys serving scale, scoring the full catalog is too slow. Which action fixes it, and which check proves it worked?

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Knowledge Check · Hard · 1 min

While reviewing recsys serving scale, recent purchases affect recommendations late. Which action fixes it, and which check proves it worked

While reviewing recsys serving scale, recent purchases affect recommendations late. Which action fixes it, and which check proves it worked?

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Knowledge Check · Hard · 1 min

While reviewing recsys serving scale, different users receive one cached list. Which action fixes it, and which check proves it worked

While reviewing recsys serving scale, different users receive one cached list. Which action fixes it, and which check proves it worked?

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Knowledge Check · Hard · 1 min

While reviewing recsys serving scale, the ranker times out. Which action fixes it, and which check proves it worked

While reviewing recsys serving scale, the ranker times out. Which action fixes it, and which check proves it worked?

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Knowledge Check · Medium · 1 min

While reviewing recsys serving scale, scoring the full catalog is too slow. Which action best addresses the problem

While reviewing recsys serving scale, scoring the full catalog is too slow. Which action best addresses the problem?

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Knowledge Check · Medium · 1 min

While reviewing recsys serving scale, recent purchases affect recommendations late. Which action best addresses the problem

While reviewing recsys serving scale, recent purchases affect recommendations late. Which action best addresses the problem?

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Knowledge Check · Medium · 1 min

While reviewing recsys serving scale, different users receive one cached list. Which action best addresses the problem

While reviewing recsys serving scale, different users receive one cached list. Which action best addresses the problem?

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Knowledge Check · Medium · 1 min

While reviewing recsys serving scale, the ranker times out. Which action best addresses the problem

While reviewing recsys serving scale, the ranker times out. Which action best addresses the problem?

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Knowledge Check · Easy · 1 min

What is the main purpose of Time complexity in algorithmic complexity

What is the main purpose of Time complexity in algorithmic complexity?

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Knowledge Check · Easy · 1 min

What is the main purpose of Space complexity in algorithmic complexity

What is the main purpose of Space complexity in algorithmic complexity?

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Knowledge Check · Easy · 1 min

What is the main purpose of Amortized cost in algorithmic complexity

What is the main purpose of Amortized cost in algorithmic complexity?

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Knowledge Check · Easy · 1 min

What is the main purpose of Complexity bound in algorithmic complexity

What is the main purpose of Complexity bound in algorithmic complexity?

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Knowledge Check · Hard · 1 min

While reviewing algorithmic complexity, latency doubles sharply with input size. Which action fixes it, and which check proves it worked

While reviewing algorithmic complexity, latency doubles sharply with input size. Which action fixes it, and which check proves it worked?

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Knowledge Check · Hard · 1 min

While reviewing algorithmic complexity, a batch succeeds small but exhausts memory large. Which action fixes it, and which check proves it worked

While reviewing algorithmic complexity, a batch succeeds small but exhausts memory large. Which action fixes it, and which check proves it worked?

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Knowledge Check · Hard · 1 min

While reviewing algorithmic complexity, a dynamic array sometimes performs a costly resize. Which action fixes it, and which check proves it worked

While reviewing algorithmic complexity, a dynamic array sometimes performs a costly resize. Which action fixes it, and which check proves it worked?

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Knowledge Check · Hard · 1 min

While reviewing algorithmic complexity, a hash lookup slows under heavy collisions. Which action fixes it, and which check proves it worked

While reviewing algorithmic complexity, a hash lookup slows under heavy collisions. Which action fixes it, and which check proves it worked?

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Knowledge Check · Medium · 1 min

While reviewing algorithmic complexity, latency doubles sharply with input size. Which action best addresses the problem

While reviewing algorithmic complexity, latency doubles sharply with input size. Which action best addresses the problem?

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Knowledge Check · Medium · 1 min

While reviewing algorithmic complexity, a batch succeeds small but exhausts memory large. Which action best addresses the problem

While reviewing algorithmic complexity, a batch succeeds small but exhausts memory large. Which action best addresses the problem?

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Knowledge Check · Medium · 1 min

While reviewing algorithmic complexity, a dynamic array sometimes performs a costly resize. Which action best addresses the problem

While reviewing algorithmic complexity, a dynamic array sometimes performs a costly resize. Which action best addresses the problem?

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Knowledge Check · Medium · 1 min

While reviewing algorithmic complexity, a hash lookup slows under heavy collisions. Which action best addresses the problem

While reviewing algorithmic complexity, a hash lookup slows under heavy collisions. Which action best addresses the problem?

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Knowledge Check · Easy · 1 min

What is the main purpose of HTTP status in API contracts

What is the main purpose of HTTP status in API contracts?

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Knowledge Check · Easy · 1 min

What is the main purpose of Idempotent method in API contracts

What is the main purpose of Idempotent method in API contracts?

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Knowledge Check · Easy · 1 min

What is the main purpose of Version compatibility in API contracts

What is the main purpose of Version compatibility in API contracts?

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Knowledge Check · Easy · 1 min

What is the main purpose of Pagination contract in API contracts

What is the main purpose of Pagination contract in API contracts?

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Knowledge Check · Hard · 1 min

While reviewing API contracts, a missing record returns a successful status. Which action fixes it, and which check proves it worked

While reviewing API contracts, a missing record returns a successful status. Which action fixes it, and which check proves it worked?

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Knowledge Check · Hard · 1 min

While reviewing API contracts, a network retry repeats an update request. Which action fixes it, and which check proves it worked

While reviewing API contracts, a network retry repeats an update request. Which action fixes it, and which check proves it worked?

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