_VOIS Senior Software Engineer Interview Questions and Answers

To get the 3rd highest salary, you can use a SQL query with the 'LIMIT' and 'OFFSET' keywords.

• Use a SQL query to select distinct salaries in descending order.

• Use the 'LIMIT' keyword to limit the results to 3.

• Use the 'OFFSET' keyword to skip the first 2 highest salaries.

• Example: SELECT DISTINCT salary FROM employees ORDER BY salary DESC LIMIT 1 OFFSET 2;

The inner join of two tables with duplicate values results in a combined set of common values.

• Inner join combines rows from both tables where the key columns match

• In this case, the result would be [1,1,1,1,1,1] as all values are common in both tables

Developed a web application for tracking and managing project tasks

• Used React.js for front-end development

• Implemented RESTful APIs using Node.js and Express

• Utilized MongoDB for database management

• Incorporated authentication and authorization features for user security

SQL is a relational database management system, while NoSQL is a non-relational database management system.

• SQL databases are table-based, NoSQL databases are document, key-value, graph, or wide-column stores

• SQL databases use structured query language for defining and manipulating data, NoSQL databases use different query languages

• SQL databases are vertically scalable, NoSQL databases are horizontally scalable

• SQL databa...read more

NoSQL is better for handling unstructured data, providing scalability and flexibility.

• NoSQL databases are better suited for handling unstructured data like social media posts, user-generated content, and IoT data.

• NoSQL databases provide better scalability as they can easily distribute data across multiple servers, allowing for horizontal scaling.

• NoSQL databases offer more flexibility in terms of data model, allowing fo...read more

Designed and implemented a real-time data pipeline for processing and analyzing user behavior data.

• Used Apache Kafka for real-time data streaming

• Utilized Apache Spark for data processing and analysis

• Implemented data transformations and aggregations using Scala

• Stored processed data in a data warehouse like Amazon Redshift

• Built monitoring and alerting systems to ensure data pipeline reliability

I would address the conflict directly and professionally, seeking to understand the root cause and find a mutually beneficial solution.

• Schedule a private meeting with the manager to discuss the conflict

• Listen actively to the manager's perspective and express your own calmly

• Seek to find common ground and propose potential solutions

• If necessary, involve HR or a mediator to help resolve the conflict

I love to spend my free time hiking, reading, and trying out new recipes in the kitchen.

• Hiking in the mountains or local trails

• Reading fiction and non-fiction books

• Experimenting with new recipes and cooking techniques

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

Dependency Injection in Spring is a design pattern where objects are passed their dependencies rather than creating them internally.

• In Spring, dependencies are injected into a class through constructor injection, setter injection, or field injection.

• This helps in achieving loose coupling between classes and makes the code more testable and maintainable.

• Example: @Autowired annotation in Spring is used for dependency inj

I have over 8 years of experience in IT, specializing in software development and project management.

• Developed web applications using Java, Spring, and AngularJS

• Led a team of developers in implementing a new CRM system for a large client

• Managed multiple projects simultaneously, ensuring on-time delivery and client satisfaction

Decorators in Python are functions that modify the behavior of other functions or methods. __name__ == __main__ is used to check if a Python script is being run directly or imported as a module.

• Decorators are used to add functionality to existing functions without modifying their code.

• They are defined using the @decorator syntax before the function definition.

• Example: @staticmethod decorator in Python is used to define...read more