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Instant It Technology Interview Questions and Answers

Updated 3 Jan 2025

Q1. How you would create user stories for a feature to capture employee attendance?

Ans.

To create user stories for capturing employee attendance, consider the needs of the stakeholders and the desired functionality.

  • Identify the stakeholders involved in the attendance tracking process (e.g., HR, managers, employees).

  • Understand the requirements and goals of each stakeholder.

  • Break down the feature into smaller user stories that address specific functionalities (e.g., clock-in/out, leave requests, reporting).

  • Ensure the user stories are written from the perspective o...read more

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Q2. Are you aware of agile methodologies?

Ans.

Yes

  • Yes, I am aware of agile methodologies.

  • Agile methodologies are a set of principles and practices that promote iterative and incremental development.

  • They prioritize customer collaboration, flexibility, and adaptability.

  • Examples of agile methodologies include Scrum, Kanban, and Lean.

  • Agile methodologies focus on delivering value to the customer in short iterations called sprints or iterations.

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Q3. Write a python code to find missing element ranging from 0 to 100. Write a SQL query to fetch data from multiple tables. Questions based on types on Joins in SQL, Stored Procedures, Views and importance of SQL...

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Ans.

Python code to find missing element and SQL query for fetching data from multiple tables.

  • Python code to find missing element: Use set difference to find missing elements in range 0 to 100.

  • SQL query for fetching data from multiple tables: Use JOINs like INNER JOIN, LEFT JOIN, or CROSS JOIN to combine data from multiple tables.

  • Types of Joins in SQL: INNER JOIN, LEFT JOIN, RIGHT JOIN, FULL JOIN.

  • Stored Procedures: Precompiled SQL queries stored in the database for reuse.

  • Views: Vi...read more

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Q4. Difference between functional and non-functional testing?

Ans.

Functional testing focuses on the behavior of the system, while non-functional testing focuses on performance, reliability, and usability.

  • Functional testing verifies if the software functions as expected based on the requirements.

  • Non-functional testing checks aspects like performance, reliability, and usability.

  • Examples of functional testing include unit testing, integration testing, and system testing.

  • Examples of non-functional testing include load testing, stress testing, a...read more

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Q5. How to automate the registration page?

Ans.

Automate the registration page by using test automation tools and frameworks.

  • Identify the elements on the registration page such as input fields, buttons, and validation messages.

  • Use test automation tools like Selenium WebDriver to interact with the elements on the page.

  • Write test scripts in a programming language like Java or Python to automate the registration process.

  • Implement data-driven testing to test different scenarios like valid and invalid inputs.

  • Use frameworks like...read more

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Q6. What is ORM and which orm you used

Ans.

ORM stands for Object-Relational Mapping, a technique to map objects from an application to tables in a relational database.

  • ORM helps developers interact with databases using objects instead of SQL queries

  • Popular ORMs include SQLAlchemy for Python, Django ORM for Django framework

  • ORMs provide features like data validation, relationship management, and query optimization

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Q7. Aggregate function in SQL

Ans.

Aggregate functions in SQL are used to perform calculations on a set of values and return a single value.

  • Aggregate functions include SUM, AVG, COUNT, MIN, and MAX.

  • They are often used with the GROUP BY clause to group the results based on certain criteria.

  • Examples: SELECT SUM(sales) FROM orders; SELECT AVG(age) FROM employees GROUP BY department;

  • Aggregate functions ignore NULL values unless specified.

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Q8. What is static method

Ans.

A static method is a method that belongs to the class itself, rather than to instances of the class.

  • Static methods can be called without creating an instance of the class.

  • They are commonly used for utility functions that do not require access to instance variables.

  • Static methods are declared using the 'static' keyword in the method signature.

  • Example: Math.max() is a static method in the Math class that returns the maximum of two numbers.

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