20+ POSCO MAHARASHTRA STEEL Interview Questions and Answers

Machine Learning is a subset of Artificial Intelligence that uses algorithms to learn from data and make predictions.

• AI (Artificial Intelligence) is the broader concept of machines being able to carry out tasks in a way that we would consider 'smart'.

• ML (Machine Learning) is a subset of AI that focuses on the development of computer programs that can access data and use it to learn for themselves.

• DL (Deep Learning) is a subset of ML that uses neural networks with many layers ...read more

Precision and Recall are evaluation metrics for classification models. Feature selection is important for model performance. P-value is a statistical measure.

• Precision is the ratio of true positives to the total predicted positives. Recall is the ratio of true positives to the total actual positives.

• Precision is important when false positives are costly, while recall is important when false negatives are costly.

• Feature selection involves identifying the most relevant features...read more

CRM is essential for businesses to manage customer relationships, improve sales, and enhance customer satisfaction.

• CRM helps businesses centralize customer data and track interactions.

• It enables businesses to personalize customer experiences and tailor marketing campaigns.

• CRM improves sales efficiency by automating processes and providing insights for better decision-making.

• It enhances customer satisfaction through better customer service and support.

• CRM fosters collaboration...read more

Webservices and WCF are both used for communication between applications. Abstraction is a concept in programming. Boxing and unboxing are operations in .NET.

• Webservices and WCF are both used for communication between applications, but WCF provides more advanced features like message queuing and reliable sessions.

• Abstraction is a concept in programming that allows us to hide complex implementation details and only expose the necessary functionality.

• There are two types of abst...read more

Evaluation metrics are used to assess the performance of classification models.

• Common evaluation metrics include accuracy, precision, recall, F1 score, and ROC-AUC.

• Accuracy measures the overall correctness of the model's predictions.

• Precision measures the proportion of true positive predictions out of all positive predictions.

• Recall measures the proportion of true positive predictions out of all actual positives.

• F1 score is the harmonic mean of precision and recall, providing...read more

I have extensive experience in the banking domain.

• Worked with multiple banks on various projects

• Familiar with banking regulations and compliance

• Experience in developing and implementing banking software solutions

• Knowledge of banking operations and processes

• Handled customer data and financial transactions securely

I have extensive experience in handling clients from various industries and backgrounds.

• I prioritize active listening and clear communication to understand client needs.

• I maintain a professional and friendly demeanor to build trust and rapport.

• I am adept at managing expectations and providing timely updates on project progress.

• I have successfully resolved conflicts and addressed concerns to ensure client satisfaction.

• I have experience in upselling and cross-selling services t...read more

Window functions in SQL allow you to perform calculations across a set of table rows related to the current row.

• Window functions are used to perform calculations on a set of rows related to the current row.

• They do not reduce the number of rows returned by the query.

• Common window functions include ROW_NUMBER(), RANK(), DENSE_RANK(), and NTILE().

Indexes are used to improve the performance of SQL queries by allowing faster data retrieval. Procedures are reusable SQL code blocks.

• Indexes are used to quickly locate data without having to scan the entire table.

• Procedures are stored SQL code blocks that can be executed multiple times.

• Indexes can be created on columns to speed up search queries.

• Procedures can accept input parameters and return results.

Query to find duplicate records in SDG team

• Use GROUP BY clause to group records by relevant columns

• Use HAVING clause to filter groups with count greater than 1

• Specify relevant columns in SELECT statement

• Example: SELECT name, email, COUNT(*) FROM sdg_team GROUP BY name, email HAVING COUNT(*) > 1

Dynamic query is a query that is constructed at runtime based on user input or conditions.

• Dynamic query allows for flexibility in querying data based on changing criteria.

• Types of indexes include clustered, non-clustered, unique, and composite indexes.

• Query optimization techniques include indexing, using proper join types, avoiding unnecessary columns in SELECT statements, and using WHERE clauses effectively.

Query to get the mentioned output

• Need to know the table structure and column names

• Use SELECT statement with appropriate columns

• Use WHERE clause to filter data

• Use ORDER BY clause to sort data

Cannot provide answer without the mentioned query.

• Need the query to provide the output.

• Cannot assume the output without the query.

• Please provide the query for accurate answer.

Lifecycle methods in React js are special methods that allow developers to hook into the component lifecycle and perform actions at specific points.

• componentDidMount() - called after the component is rendered for the first time

• componentDidUpdate() - called after the component's updates are flushed to the DOM

• componentWillUnmount() - called before the component is removed from the DOM

Caching is a technique to store frequently accessed data in a temporary storage to improve performance.

• Caching improves application performance by reducing the need to fetch data from the original source.

• Types of caching include in-memory caching, database caching, and distributed caching.

• In-memory caching stores data in the application's memory for quick access.

• Database caching stores frequently accessed data in a separate cache database.

• Distributed caching distributes the c...read more

The candidate is asked to write queries and joins.

• Understand the requirements and constraints of the query

• Identify the tables and columns needed for the query

• Write the query using appropriate syntax and functions

• Use joins to combine data from multiple tables

• Test the query to ensure it returns the expected results

Babel is a JavaScript compiler that converts modern JavaScript code into backward-compatible versions for browser compatibility.

• Babel allows developers to write code using the latest ECMAScript features without worrying about browser support.

• It transforms JSX syntax used in React components into regular JavaScript.

• Babel can also be configured to support specific browsers or environments.

• Plugins can be added to Babel for additional functionality or language features.

Defect life cycle is the process of identifying, reporting, fixing, and verifying software defects.

• Defect is identified by testers during testing phase

• Defect is reported to the development team

• Development team fixes the defect

• Fixed defect is retested by testers

• If defect is not resolved, it goes through the cycle again

• Once defect is resolved, it is closed

I am highly proficient in .NET with extensive experience in developing web applications, APIs, and desktop applications.

• Extensive experience in developing web applications using ASP.NET MVC and ASP.NET Core

• Strong knowledge of C# programming language and .NET framework

• Experience in building RESTful APIs using .NET Web API

• Familiarity with front-end technologies like HTML, CSS, and JavaScript for building interactive web applications

• Experience in developing desktop applications ...read more

Webpack is a module bundler for JavaScript applications.

• Webpack takes modules with dependencies and generates static assets representing those modules.

• It can handle various types of assets like JavaScript, CSS, images, and fonts.

• Webpack allows for code splitting, lazy loading, and hot module replacement.

• It has a rich plugin ecosystem to extend its functionality.

• Commonly used configuration file for webpack is webpack.config.js.

HOC stands for Higher Order Component in React, a pattern where a function takes a component and returns a new component.

• HOC is a function that takes a component and returns a new component with additional props or functionality.

• It is used for code reusability, logic abstraction, and cross-cutting concerns like logging, authentication, etc.

• Example: withAuth HOC can add authentication logic to a component by checking if the user is logged in.

Yes, I am proficient in SQL and have experience writing complex queries.

• Proficient in writing SQL queries

• Experience with complex joins and subqueries

• Familiar with database management systems like MySQL, PostgreSQL, etc.

Testing is the process of evaluating a system or software to identify defects or errors.

• Testing involves executing a program or system with the intent of finding bugs or issues.

• It is done to ensure that the software meets the specified requirements and functions as expected.

• Testing can be manual or automated, depending on the complexity and requirements of the software.

• Types of testing include functional testing, performance testing, security testing, etc.

• Example: Testing a l...read more

MVC lifecycle involves request routing, controller execution, view rendering, and response generation.

• Request is received by the routing engine which determines the appropriate controller and action method to handle the request.

• Controller executes the action method, interacts with the model to retrieve data, and passes it to the view.

• View renders the data received from the controller and generates the HTML response.

• Response is sent back to the client for display in the browse...read more