Atos Interview Questions and Answers

SCD type 2 is a method used in data warehousing to track historical changes by creating a new record for each change.

• SCD type 2 stands for Slowly Changing Dimension type 2

• It involves creating a new record in the dimension table whenever there is a change in the data

• The old record is marked as inactive and the new record is marked as current

• It allows for historical tracking of changes in data over time

• Example: If a cust...read more

Read multiple CSV files, add a column, and save them to a new location using PySpark.

• Use SparkSession to initialize PySpark: `spark = SparkSession.builder.appName('CSVProcessor').getOrCreate()`.

• Read CSV files from a folder: `df = spark.read.csv('path/to/folder/*.csv', header=True)`.

• Add a new column: `df = df.withColumn('new_column', lit('value'))`.

• Write the modified DataFrame to a new location: `df.write.csv('path/to/o...read more

The capital market is a financial market where individuals and institutions trade financial securities.

• It is a market for buying and selling long-term debt or equity-backed securities.

• It includes stock exchanges and over-the-counter markets.

• Investors can buy and sell stocks, bonds, and other financial instruments in the capital market.

• It helps companies raise capital for expansion and growth.

• Examples include the New Yo...read more

UiPath Studio is for professional developers, while StudioX is for business users with no coding experience.

• UiPath Studio is for professional developers who have coding experience.

• StudioX is designed for business users with no coding experience.

• StudioX has a more user-friendly interface and pre-built automation templates.

• UiPath Studio offers more advanced features and customization options for developers.

• StudioX allows...read more

Automation Test Suite is a collection of test cases that are automated to test the functionality of a software application.

• Automation Test Suite helps in executing multiple test cases efficiently.

• It helps in reducing manual effort and time required for testing.

• Test suites can be scheduled to run at specific times or triggered based on certain events.

• Examples of popular automation test suites include Selenium, UFT, and ...read more

An abstract class is a class that cannot be instantiated and is used as a blueprint for other classes to inherit from.

• Cannot be instantiated directly

• May contain abstract methods that must be implemented by subclasses

• Can have both abstract and non-abstract methods

• Used to define common behavior for subclasses

Singleton pattern ensures a class has only one instance and provides a global point of access to it.

• Create a private static instance variable of the class itself

• Make the constructor private to prevent instantiation from outside the class

• Provide a static method to access the singleton instance

Struts is a framework for building Java web applications based on the Model-View-Controller (MVC) design pattern.

• Struts framework is based on MVC architecture

• It uses ActionServlet as the controller

• Struts configuration is done using XML files like struts-config.xml

• It provides built-in support for form validation and error handling

• Struts actions are mapped to URLs in struts-config.xml

I have extensive experience in field engineering, focusing on project management, technical support, and client relations.

• Managed multiple projects simultaneously, ensuring timely delivery and adherence to budget constraints.

• Provided technical support for equipment installation and troubleshooting, improving operational efficiency by 20%.

• Collaborated with cross-functional teams to develop innovative solutions for compl...read more

I have worked in various engineering roles, focusing on field operations, project management, and technical support across multiple industries.

• Worked as a Field Engineer at XYZ Corp, managing on-site installations and troubleshooting equipment.

• Collaborated with cross-functional teams to ensure project timelines were met, improving efficiency by 20%.

• Conducted regular site inspections to ensure compliance with safety reg...read more