20+ Interview Questions and Answers

Assure the customer that you are capable of handling their issue and offer to escalate if necessary.

• Listen to the customer's concerns

• Empathize with their frustration

• Assure them that you are capable of handling their issue

• Offer to escalate to a senior officer if necessary

• Provide contact information for the senior officer

Login page security includes encryption, password policies, and session management.

• Encryption of passwords using hashing algorithms like bcrypt or scrypt

• Implementation of password policies like minimum length, complexity, and expiration

• Session management with secure cookies and timeout mechanisms

• Prevention of brute force attacks with rate limiting and CAPTCHA

• Protection against SQL injection and cross-site scripting (XSS) attacks

Abstract classes are used to provide a common interface for its subclasses.

• Abstract classes cannot be instantiated, but can be subclassed

• Abstract classes can have abstract and non-abstract methods

• Abstract classes can be used to implement template method pattern

• Abstract classes can be used to provide default implementation of methods

• Abstract classes can be used to enforce design constraints on its subclasses

Exploratory testing involves simultaneous learning, test design, and execution. Regression testing ensures new code changes do not adversely affect existing functionality. Retesting is done to verify that a fixed bug is resolved.

• Exploratory testing is a hands-on approach where testers explore the application without predefined test cases. They learn the application while testing and design test cases simultaneously.

• Regression testing is performed to ensure that new code chang...read more

View vs indexed view, pipeline design process, monitoring pipeline failures and fixing

• View is a virtual table based on a SELECT query, while indexed view is a view with a clustered index for faster retrieval

• Pipeline design process involves defining data sources, transformations, and destinations

• Monitor pipeline failures using logging tools like Apache NiFi or Airflow

• Fix pipeline failures by identifying the root cause, adjusting configurations, or updating dependencies

The three financial statements - income statement, balance sheet, and cash flow statement - are interlinked through the flow of information and transactions.

• Income statement shows the company's revenues and expenses, which affect the net income reported on the statement.

• Net income from the income statement flows into the balance sheet as retained earnings, affecting the equity section of the balance sheet.

• Cash flow statement shows how changes in balance sheet accounts and inc...read more

Retesting, smoke sanity, and exploratory are different types of testing techniques used in quality assurance.

• Retesting is the process of running tests again to verify that a specific bug or issue has been fixed.

• Smoke testing, also known as sanity testing, is a preliminary testing to check if the software build is stable enough for further testing.

• Exploratory testing is a testing approach where testers explore the software to find defects without predefined test cases.

• Each typ...read more

SQL joins are used to combine rows from two or more tables based on a related column between them. WHERE clause is used to filter rows based on a specified condition. LIKE operator is used for pattern matching in SQL queries.

• Joins in SQL are used to retrieve data from multiple tables based on a related column

• WHERE clause is used to filter rows based on a specified condition

• LIKE operator is used for pattern matching in SQL queries

SQL joins are used to combine data from two or more tables based on a related column between them.

• Inner join returns only the matching rows from both tables

• Left outer join returns all rows from the left table and matching rows from the right table

• Right outer join returns all rows from the right table and matching rows from the left table

• Full outer join returns all rows from both tables

• Syntax: SELECT * FROM table1 INNER/LEFT/RIGHT/FULL OUTER JOIN table2 ON table1.column = tabl...read more

Row level security in Power BI allows restricting access to specific rows of data based on user roles. Package level information in SSIS refers to metadata about the SSIS package itself.

• Row level security in Power BI can be implemented using roles and filters to control access to specific rows of data.

• Package level information in SSIS includes details like package name, version, description, and connection managers used.

• Row level security in Power BI is crucial for ensuring d...read more

Answering a code error and output guess question for Technical Support Engineer position.

• Identify the error message or line number in the code

• Check for syntax errors, missing or extra characters

• Debug the code by running it and checking the output

• Guess the output based on the input and code logic

• Provide a detailed explanation of the error and output

Networking is the practice of connecting devices to share resources. There are different types of networks such as LAN, WAN, MAN, etc.

• Networking involves connecting devices to share resources such as files, printers, and internet access.

• Local Area Network (LAN) is a network that connects devices within a small geographical area.

• Wide Area Network (WAN) is a network that connects devices over a large geographical area.

• Metropolitan Area Network (MAN) is a network that connects d...read more

Financial analysts analyze financial data to help businesses make informed decisions about investments, budgets, and overall financial health.

• Analyze financial statements to assess performance and make recommendations

• Evaluate economic trends to forecast future financial conditions

• Conduct industry research to understand market dynamics

• Create financial models to support decision-making

• Communicate findings and recommendations to stakeholders

• Examples: Performing ratio analysis, c...read more

Abstract class can have both abstract and non-abstract methods, while interface can only have abstract methods.

• Abstract class can have constructor, fields, and methods, while interface cannot have any of these.

• A class can implement multiple interfaces but can only inherit from one abstract class.

• Abstract class is used to provide a common base for multiple derived classes, while interface is used to define a contract for classes to implement.

• Example: Abstract class 'Shape' wit...read more

Regression is the process of retesting a software application after changes have been made to ensure that the existing functionalities are not affected.

• Regression testing is done to make sure that new code changes do not adversely impact the existing functionality of the software.

• It involves running test cases that cover the affected areas of the application to verify that everything still works as expected.

• Regression testing can be automated to save time and effort in retest...read more

Project and tables are essential components of a database system.

• A project is a collection of related tables that store data.

• Tables are used to organize and store data in a structured manner.

• Projects and tables are created using SQL commands.

• Projects can have multiple tables that are related to each other through keys.

• Tables can have columns that define the type of data that can be stored in them.

OOPs stands for Object-Oriented Programming. It is a programming paradigm based on the concept of objects.

• OOPs focuses on creating objects that contain data and methods to manipulate that data.

• Encapsulation is the concept of bundling data and methods that operate on the data into a single unit.

• Inheritance allows a class to inherit properties and behavior from another class.

• Polymorphism allows objects to be treated as instances of their parent class.

• Abstraction hides the compl...read more

Agile process is a iterative approach to software development that focuses on collaboration, flexibility, and customer feedback.

• Iterative development with short cycles called sprints

• Cross-functional teams work together closely

• Customer feedback is incorporated throughout the process

• Adaptability to changing requirements

• Regular meetings like daily stand-ups and sprint reviews

Xpath find with siblings is used to locate an element based on its relationship with other elements.

• Use the following syntax to find an element with its sibling: 'element1/following-sibling::element2'

• For example, to find a paragraph element following a heading element: 'h1/following-sibling::p'

ASP.NET Core is a cross-platform, high-performance framework for building modern, cloud-based, internet-connected applications.

• Cross-platform framework for building web applications

• High-performance and scalable

• Supports cloud-based and internet-connected applications

• Open-source and actively maintained by Microsoft

• Modular design allows for flexibility and customization

Design patterns are reusable solutions to common problems in software design.

• Design patterns help in creating maintainable, scalable, and flexible software.

• They provide a common language for developers to communicate about solutions.

• Examples include Singleton, Factory, Observer, and MVC.

Ratios are used to evaluate a company's financial performance by comparing different financial metrics.

• Ratios can be categorized into liquidity ratios, profitability ratios, solvency ratios, and efficiency ratios.

• Examples of ratios include current ratio, return on equity, debt-to-equity ratio, and inventory turnover ratio.

• These ratios help analysts assess a company's financial health, operational efficiency, and overall performance.