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Updated weekly · Last refresh Aug 30

Cisco Restaurant + Bar Research Scientist Interview Questions

The questions to prepare for a Cisco Restaurant + Bar Research Scientist interview. Questions from real interview reports rank first. Updated weekly.

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1
System DesignStart here. 5 questions · ~40 min
Design Feature Drift Monitoring SystemHard

Design a production ranking system with robust feature drift monitoring across batch and real-time features at high QPS.

Feature StoreFeature DriftModel ServingCisco Restaurant + Bar
Latency vs Accuracy in InferenceMedium

Tests trade-off reasoning for model selection, optimization, and serving under latency constraints.

latencyAccuracyCisco Restaurant + Bar
Human-in-the-Loop Feedback LoopMedium

Tests ability to design iterative ML improvement with annotation workflows, monitoring, and retraining.

model performancefeedback loopCisco Restaurant + Bar
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2
Machine Learning5 questions · ~40 min
Handling Class Imbalance in ClassificationMedium

Explain practical ways to train and evaluate a classifier when the target classes are highly imbalanced.

model trainingSupervised LearningClass ImbalanceCisco Restaurant + Bar
Dimensionality Reduction for SensorsMedium

Tests selection criteria for dimensionality reduction methods and their impact on downstream modeling.

sensor dataCisco Restaurant + Bar
Transformer Architecture and UseMedium

Tests knowledge of transformer components and how to adapt them beyond natural language.

architectureCisco Restaurant + Bar
Loss Function Trade-offsMedium

Tests understanding of how loss functions affect optimization, calibration, and model behavior.

loss functionsDeep Learningmodel trainingCisco Restaurant + Bar
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3
Behavioral & Leadership4 questions · ~32 min
Explaining AI to Business StakeholdersEasy

Tests communication of complex AI concepts to non-technical stakeholders, with emphasis on structure, trade-offs, and stakeholder alignment.

Stakeholder ManagementCommunicationstarCisco Restaurant + Bar
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The finish line: interview-readyComplete all 14 questions to finish this plan.