LTIMindtree Azure Cloud Administrator Interview Questions and Answers

Q1. Lets say you have table 1 with values 1,2,3,5,null,null,0 and table 2 has null,2,4,7,3,5 What would be the output after inner join?
Ans. 
The output after inner join of table 1 and table 2 will be 2,3,5.
• Inner join only includes rows that have matching values in both tables.

• Values 2, 3, and 5 are present in both tables, so they will be included in the output.

• Null values are not considered as matching values in inner join.
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Q2. Lets say you have customers table with customerID and customer name, Orders table with OrderId and CustomerID. write a query to find the customer name who placed the maximum orders. if more than one person...read more
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Q3. Spark Architecture, Optimisation techniques
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Q4. Some personal questions.
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Q1. Explain the entire architecture of a recent project you are working on in your organisation.
Ans. 
The project involves building a data pipeline to ingest, process, and analyze large volumes of data from various sources in Azure.
• Utilizing Azure Data Factory for data ingestion and orchestration

• Implementing Azure Databricks for data processing and transformation

• Storing processed data in Azure Data Lake Storage

• Using Azure Synapse Analytics for data warehousing and analytics

• Leveraging Azure DevOps for CI/CD pipeline aut
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Q2. How do you design an effective ADF pipeline and what all metrics and considerations you should keep in mind while designing?
Ans. 
Designing an effective ADF pipeline involves considering various metrics and factors.
• Understand the data sources and destinations

• Identify the dependencies between activities

• Optimize data movement and processing for performance

• Monitor and track pipeline execution for troubleshooting

• Consider security and compliance requirements

• Use parameterization and dynamic content for flexibility

• Implement error handling and retries fo
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Q3. Lets say you have a very huge data volume and in terms of performance how would you slice and dice the data in such a way that you can boost the performance?
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Q4. Lets say you have to reconstruct a table and we have to preserve the historical data ? ( i couldnt answer that but please refer to SCD)
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Q5. We have adf and databricks both, i can achieve transformation , fetching the data and loading the dimension layer using adf also but why do we use databricks if both have the similar functionality for few ...read more
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Q1. Basic HR questions
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Q1. What is Azure VMware and how it works
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Q2. How is AD synchronization to on premise
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Q1. Nothing interviewers interested about your past experience, work you handled in last project , your roles & responsibilities.
Ans. Just prepare everything you mentioned in your resume
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Q1. Second round is with project head. Only looking for your problem handling skills & how youn present yourself. Mostly focus on your communication.
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Q1. Salty discussion. Be carefully they try to give you only 20% hikes on current package. Negotiate properly.
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Q1. Tell me about yourself
Ans. Tell about your background and current project work
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Q2. What is azure data factory
Ans. 
Azure Data Factory is a cloud-based data integration service that allows you to create, schedule, and manage data pipelines.
• Azure Data Factory is used to move and transform data from various sources to destinations.

• It supports data integration and orchestration of workflows.

• You can monitor and manage data pipelines using Azure Data Factory.

• It provides a visual interface for designing and monitoring data pipelines.

• Azure...read more
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Q3. What is Azure data lake
Ans. 
Azure Data Lake is a scalable data storage and analytics service provided by Microsoft Azure.
• Azure Data Lake Store is a secure data repository that allows you to store and analyze petabytes of data.

• Azure Data Lake Analytics is a distributed analytics service that can process big data using Apache Hadoop and Apache Spark.

• It is designed for big data processing and analytics tasks, providing high performance and scalabili
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Q4. 2nd highest salary from employee table
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Q5. What is index in table
Ans. 
An index in a table is a data structure that improves the speed of data retrieval operations on a database table.
• Indexes are used to quickly locate data without having to search every row in a table.

• They can be created on one or more columns in a table.

• Examples of indexes include primary keys, unique constraints, and non-unique indexes.
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Q1. Based on my previous company projects
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Q2. SQL based questions are asked
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Q3. ADF based questions are asked
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Q4. Azure related questions are asked
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Q1. Reg salary discussion
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Q1. How are you connecting your onPerm from Azure?
Ans. 
I connect onPrem to Azure using Azure ExpressRoute or VPN Gateway.
• Use Azure ExpressRoute for private connection through a dedicated connection.

• Set up a VPN Gateway for secure connection over the internet.

• Ensure proper network configurations and security settings.

• Use Azure Virtual Network Gateway to establish the connection.

• Consider using Azure Site-to-Site VPN for connecting onPremises network to Azure Virtual Network.
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Q2. What is Autoloader in Databricks?
Ans. 
Autoloader in Databricks is a feature that automatically loads new data files as they arrive in a specified directory.
• Autoloader monitors a specified directory for new data files and loads them into a Databricks table.

• It supports various file formats such as CSV, JSON, Parquet, Avro, and ORC.

• Autoloader simplifies the process of ingesting streaming data into Databricks without the need for manual intervention.

• It can be ...read more
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Q3. How do you normalize your Json data
Ans. 
Json data normalization involves structuring data to eliminate redundancy and improve efficiency.
• Identify repeating groups of data

• Create separate tables for each group

• Establish relationships between tables using foreign keys

• Eliminate redundant data by referencing shared values
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Q4. How do you read from Kafka?
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30 Minutes Round- Easy to moderate level

Q1. Day to day activities?
Ans. 
Day to day activities involve managing Azure DevOps pipelines, monitoring builds, resolving issues, collaborating with teams.
• Managing Azure DevOps pipelines for continuous integration and deployment

• Monitoring builds and deployments for any issues or failures

• Resolving any issues that arise during the development process

• Collaborating with development teams to ensure smooth workflow and communication

• Implementing best prac...read more
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Q2. Quetsions on various devops tools
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An aptitude test is an exam used to determine an individual's skill or propensity to succeed in a given activity. Aptitude tests assume that individuals have inherent strengths and weaknesses and have a natural inclination toward success or failure in specific areas based on their innate characteristics

The transfer of an individual's rights or property to another person or business. This concept exists in a variety of business transactions and is often spelled out contractually.

Q1. Tell me something about yourself? Why are you interested in this job? Would you like to work overtime or odd hours? How do you handle stress, pressure, and anxiety? Etc..
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