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Hexaware Technologies
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I applied via Campus Placement
There is nothing much to say it's just a normal aptitude test
Create a function based on shared logic
Identify common logic that can be reused in multiple functions
Create a separate function to encapsulate the shared logic
Call the shared function from other functions where the logic is needed
Hexaware Technologies interview questions for popular designations
Moderate ques related to probality , profit loss, percentage
Get interview-ready with Top Hexaware Technologies Interview Questions
I applied via Walk-in and was interviewed in May 2024. There was 1 interview round.
Single returns the only element of a sequence, or a default value if the sequence is empty. First returns the first element of a sequence, or a default value if the sequence contains no elements.
Single throws an exception if the sequence contains more than one element, while First does not.
Single is useful when you expect only one element in the sequence, while First is used when you just need the first element.
Example...
ref is used for passing a variable by reference, out is used for returning a value from a method
ref keyword is used to pass a variable by reference, allowing the method to modify the variable
out keyword is used to return a value from a method, the variable passed must be assigned a value within the method
ref parameters must be initialized before passing to the method, out parameters do not need to be initialized
I was interviewed in Mar 2024.
Types of clusters in Databricks include Standard, High Concurrency, and Single Node clusters.
Standard cluster: Suitable for running single jobs or workflows.
High Concurrency cluster: Designed for multiple users running concurrent jobs.
Single Node cluster: Used for development and testing purposes.
To find the highest 2nd salary in the employee table, you need to use SQL query with the ORDER BY and LIMIT clauses.
Use SQL query with ORDER BY clause to sort salaries in descending order
Use LIMIT 1,1 to get the second highest salary
Use SQL query with GROUP BY and HAVING clause to find duplicate rows.
Use GROUP BY to group rows with same values
Use HAVING COUNT(*) > 1 to filter out duplicate rows
Example: SELECT column1, column2, COUNT(*) FROM table_name GROUP BY column1, column2 HAVING COUNT(*) > 1
Azure Synapse is a cloud-based analytics service that brings together big data and data warehousing.
Azure Synapse integrates big data and data warehousing capabilities in a single service
It allows for data ingestion, preparation, management, and serving for BI and machine learning
Supports both serverless and provisioned resources for data processing
Offers integration with Azure Machine Learning, Power BI, and Azure Dat
I applied via Walk-in and was interviewed in May 2024. There were 3 interview rounds.
Verbal reasoning and filling nouns and clusters
Hr final round seems to be about company shift timings and confirmation
EMR is a managed Hadoop framework for processing large amounts of data, while EC2 is a scalable virtual server in AWS.
EMR stands for Elastic MapReduce and is a managed Hadoop framework for processing large amounts of data.
EC2 stands for Elastic Compute Cloud and is a scalable virtual server in Amazon Web Services (AWS).
EMR allows for easy provisioning and scaling of Hadoop clusters, while EC2 provides resizable compute...
I have experience working with both Star and Snowflake schemas in my projects.
Star schema is a denormalized schema where one central fact table is connected to multiple dimension tables.
Snowflake schema is a normalized schema where dimension tables are further normalized into sub-dimension tables.
Used Star schema for simpler, smaller datasets where performance is a priority.
Used Snowflake schema for complex, larger dat...
Yes, I have used Python and PySpark in my projects for data engineering tasks.
I have used Python for data manipulation, analysis, and visualization.
I have used PySpark for big data processing and distributed computing.
I have experience in writing PySpark jobs to process large datasets efficiently.
Yes, I have experience with serverless schema.
I have worked with AWS Lambda to build serverless applications.
I have experience using serverless frameworks like Serverless Framework or AWS SAM.
I have designed and implemented serverless architectures using services like AWS API Gateway and AWS DynamoDB.
Java is used for its platform independence, object-oriented programming, robustness, and large community support.
Platform independence allows Java programs to run on any device with a Java Virtual Machine (JVM)
Object-oriented programming allows for modular and reusable code
Robustness with features like automatic memory management and exception handling
Large community support with extensive libraries and frameworks avai...
Spring Boot is a framework that simplifies the development of Java applications by providing pre-configured settings and tools.
Spring Boot eliminates the need for manual configuration by providing defaults for most settings.
It allows developers to create stand-alone, production-grade Spring-based applications with minimal effort.
Spring Boot includes embedded servers like Tomcat, Jetty, or Undertow, making it easy to de...
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