Quest Global Interview Questions
The questions to prepare for Quest Global interviews, across all roles. Questions from real interview reports rank first. Updated weekly.
Find the second highest distinct salary from a single table using basic PostgreSQL ordering and limiting.
Quest GlobalCompute top 10 customers by net sales using joins and aggregations, ordering by revenue with deterministic tie-breaking.
Gain Digital
TCS
Zest AIFind the middle node of a singly linked list in one pass using slow and fast pointers.
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Explain how you used a KPI and supporting metrics to diagnose a product issue and make a concrete product decision.
Quest GlobalExplain how you align stakeholders with competing priorities, make trade-offs explicit, and keep execution on track.
Quest GlobalDesign a production ranking system with robust feature drift monitoring across batch and real-time features at high QPS.
Quest GlobalExplain which classification metrics to use and how metric choice depends on the business objective and error tradeoffs.
Quest GlobalBuild a classifier for a highly imbalanced dataset and choose training and evaluation methods that surface rare positives.
Quest GlobalFramework for finding and prioritizing account expansion opportunities within an existing client relationship.
Quest Global