10+ D2K Technologies India Interview Questions and Answers

Types of joins in SQL include inner join, outer join, left join, right join, and full join.

• Inner join: returns rows when there is a match in both tables

• Outer join: returns all rows from one table and matching rows from the other table

• Left join: returns all rows from the left table and the matched rows from the right table

• Right join: returns all rows from the right table and the matched rows from the left table

• Full join: returns rows when there is a match in one of the tables

Selenium WebDriver methods are used to interact with web elements and perform actions on them.

• findElement(By locator) - locates a single web element on the page

• sendKeys(String text) - types text into an input field

• click() - clicks on a web element

• getText() - retrieves the text of a web element

TestNG is a testing framework for Java that supports annotations for defining test methods and test configurations.

• TestNG is used for writing and running automated tests in Java.

• Annotations like @Test, @BeforeTest, @AfterTest are used to define test methods and configurations.

• Annotations provide flexibility in defining test execution order, grouping tests, setting dependencies, etc.

• TestNG allows parameterization of tests using @Parameters annotation.

• TestNG supports parallel t...read more

Types of testing include functional testing, non-functional testing, manual testing, automated testing, and more.

• Functional testing: Testing the functionality of the software against the requirements.

• Non-functional testing: Testing aspects like performance, usability, security, etc.

• Manual testing: Testing performed manually by testers.

• Automated testing: Testing using automated tools and scripts.

• Regression testing: Testing to ensure that new code changes do not adversely affec...read more

Object-oriented programming concepts in Java

• Encapsulation: 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: ability of an object to take on many forms

• Abstraction: hiding the implementation details and showing only the functionality

• Example: Class Animal with subclasses Dog and Cat inheriting from it

BA role in the system is to bridge the gap between business stakeholders and IT teams to ensure successful implementation of projects.

• Gathering and analyzing business requirements

• Translating business requirements into technical specifications

• Collaborating with stakeholders and IT teams to ensure alignment

• Identifying opportunities for process improvement

• Facilitating communication between different teams

• Ensuring project goals are met within scope, budget, and timeline

My current CTC is $80,000 per year.

• My current CTC is $80,000 per year

• CTC stands for Cost to Company

• It includes salary, bonuses, benefits, and any other perks provided by the company

Routings in MVC are used to map URLs to controller actions.

• Routings define the URL patterns that should be matched and the corresponding controller actions to be executed.

• They are defined in the RouteConfig.cs file in ASP.NET MVC.

• Routings can include parameters that are passed to the controller action.

• Example: {controller}/{action}/{id} maps to HomeController.Index(int id)

• Routings can also include constraints to restrict the values of parameters.

• Example: {id:int} only matches...read more

OOPs is a programming paradigm based on the concept of objects that interact with each other.

• OOPs stands for Object-Oriented Programming.

• It focuses on creating objects that have properties and methods to interact with each other.

• It emphasizes on encapsulation, inheritance, and polymorphism.

• Encapsulation means hiding the internal details of an object from the outside world.

• Inheritance allows creating new classes from existing ones.

• Polymorphism allows objects of different class...read more

Travel within city is essential for a Senior Business Analyst to attend meetings, visit clients, and gather information.

• Traveling within the city is necessary for attending meetings with stakeholders.

• Visiting clients to understand their requirements and provide solutions.

• Gathering information from various sources to analyze market trends and competition.

• Utilizing public transportation or driving to reach different locations efficiently.

Manual testing is the process of testing software manually to identify defects without the use of automation tools.

• Involves executing test cases manually without the use of automation tools

• Requires human intervention to verify software functionality

• Involves exploratory testing to uncover defects that may not be covered by test cases