o9 Solutions Data Engineer Interview Questions and Answers

Q1. Python Lambda Function
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Q2. What are pods in Kubernetes
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Pods are the smallest deployable units in Kubernetes, consisting of one or more containers.
• Pods are used to run and manage containers in Kubernetes

• Each pod has its own unique IP address within the Kubernetes cluster

• Pods can contain multiple containers that share resources and are scheduled together

• Pods are ephemeral and can be easily created, destroyed, or replicated

• Pods can be managed and scaled using Kubernetes contr
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Q1. BQ store procedure
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A stored procedure is a set of SQL statements that can be saved and reused in a database.
• Stored procedures can improve performance by reducing network traffic and improving security.

• They can be used to encapsulate business logic and complex queries.

• Stored procedures can accept input parameters and return output parameters or result sets.
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Q2. GCP archiotecture
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Q1. How to create DBT project
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To create a DBT project, you need to set up a project directory, create models, define sources, and run tests.
• Set up a project directory with a dbt_project.yml file

• Create models in the models directory using SQL files

• Define sources in the sources.yml file

• Run tests using dbt test command
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Q2. Explain materializations in dbt
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Materializations in dbt are pre-computed tables that store the results of dbt models for faster query performance.
• Materializations are created using the 'materialized' parameter in dbt models.

• Common types of materializations include 'view', 'table', and 'incremental'.

• Materializations help improve query performance by reducing the need to recompute data on every query.

• Materializations can be refreshed manually or automa
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Q3. What are dbt snapshots?
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dbt snapshots are a way to capture the state of your data model at a specific point in time.
• dbt snapshots are used to create point-in-time snapshots of your data model

• They allow you to track changes in your data over time

• Snapshots can be used for auditing, debugging, or creating historical reports
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Q1. Basic questions on azure databricks
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Q2. Question on spark
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Q1. SQL questions mostly
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Q1. Azure data factory scenario based questions
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Q1. Tough sql and Azure scenario based questions
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Basic coding questions on an online platform

Case study about a use case and building ELT pipelines

Basic Python List and Array questions
Decorators
Global Interpreter Lock

Q1. In round with a VP who was checking for candidates' vision and drive along with past work experience
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Q2. Questions about AI and ML, Activation Fucntions
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Q3. Which neural Network architectures are available
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Some common neural network architectures include feedforward, convolutional, recurrent, and generative adversarial networks.
• Feedforward Neural Networks (FNN): Simplest form of neural network where information flows in one direction only.

• Convolutional Neural Networks (CNN): Designed for image recognition tasks, using convolutional layers to extract features.

• Recurrent Neural Networks (RNN): Suitable for sequential data, ...read more
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