20+ Lupin Interview Questions and Answers

Use SQL query to find employees with third highest salary in table

• Use ORDER BY clause to sort salaries in descending order

• Use LIMIT and OFFSET to skip first two highest salaries

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

The .py files contain Python code, while the .pyc files are compiled bytecode files generated by Python.

• The .py files are human-readable text files containing Python code.

• The .pyc files are compiled bytecode files created by Python when a .py file is imported or executed.

• The .pyc files are platform-independent and can be executed on any system with a compatible Python interpreter.

Lambda function is an anonymous function in Python that can have any number of arguments, but can only have one expression.

• Lambda functions are defined using the lambda keyword.

• They are commonly used for small, one-time tasks where defining a full function is unnecessary.

• Lambda functions can take any number of arguments, but can only have one expression.

• Example: add = lambda x, y: x + y

Data scientists analyze and interpret complex data to inform business decisions, while data engineers design and build data pipelines to collect and store data.

• Data scientists focus on analyzing and interpreting data to extract insights and make predictions.

• Data engineers focus on designing and building data pipelines to collect, store, and transform data.

• Data scientists often use machine learning algorithms and statistical models to analyze data.

• Data engineers work with tool...read more

The 4 pillars of OOPS concept are Inheritance, Encapsulation, Abstraction, and Polymorphism.

• Inheritance: Allows a class to inherit properties and behavior from another class. Example: Parent class 'Animal' and child class 'Dog'.

• Encapsulation: Bundling data and methods that operate on the data into a single unit. Example: Using private variables and public methods.

• Abstraction: Hiding the complex implementation details and showing only the necessary features. Example: Interface...read more

DBMS stands for Database Management System. It is a software system that allows users to interact with a database.

• DBMS helps in storing, retrieving, and managing data efficiently.

• It provides data security, data integrity, and data consistency.

• Use cases include online transaction processing (OLTP), data warehousing, and customer relationship management (CRM).

DBMS stands for Database Management System. It is a software system that allows users to define, create, maintain and control access to databases.

• DBMS helps in managing data efficiently and ensures data integrity.

• Types of DBMS include relational, hierarchical, network, object-oriented, and NoSQL databases.

• Examples of DBMS include MySQL, Oracle, SQL Server, MongoDB, and PostgreSQL.

Polymorphism is the ability of a single function or method to operate on different types of data.

• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• There are two types of polymorphism: compile-time (method overloading) and runtime (method overriding).

• Example: Inheritance in object-oriented programming languages like Java allows for polymorphism.

• Example: A method 'draw()' can be implemented differently in various subclasses of a 'S...read more

Generate 15 test cases for a given requirement in a Graduate Trainee interview.

• Test case 1: Input is null

• Test case 2: Input is an empty string

• Test case 3: Input contains only numbers

• Test case 4: Input contains special characters

• Test case 5: Input contains both uppercase and lowercase letters

• Test case 6: Input is a long string

• Test case 7: Input is a short string

• Test case 8: Input is a single character

• Test case 9: Input is a sentence with punctuation marks

• Test case 10: Input is...read more

Opps stands for Object-oriented Programming Principles, which are a set of programming concepts that help in organizing and designing code.

• Opps includes concepts like inheritance, encapsulation, polymorphism, and abstraction.

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

• Encapsulation involves bundling data and methods that operate on the data into a single unit.

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

• Abstr...read more

I manage data by organizing, analyzing, and storing it efficiently.

• I use database management systems to store and retrieve data.

• I ensure data accuracy and integrity through regular audits and validations.

• I analyze data using statistical tools and techniques to derive insights.

• I organize data into structured formats for easy access and interpretation.

• I prioritize data security and confidentiality to protect sensitive information.

CNN stands for Convolutional Neural Network. It is a type of deep learning algorithm used for image recognition and classification.

• CNNs are commonly used in computer vision tasks such as image classification, object detection, and facial recognition.

• They are designed to automatically and adaptively learn spatial hierarchies of features from data.

• CNNs consist of multiple layers including convolutional layers, pooling layers, and fully connected layers.

• Examples of CNN applicati...read more

Multiple inheritance is a feature in object-oriented programming where a class can inherit attributes and methods from more than one parent class.

• Allows a class to inherit attributes and methods from multiple parent classes

• Can lead to the diamond problem where ambiguity arises if two parent classes have a method with the same name

• Languages like C++ support multiple inheritance

Cut the cake into 8 pieces by making 3 slices, creating 8 equal-sized slices.

• Make two vertical cuts to divide the cake into 4 equal quarters.

• Then make one horizontal cut through the middle of the cake to create 8 equal-sized slices.

• Each slice will be a triangular piece of cake.

Big Data refers to large volumes of data that cannot be easily managed or analyzed using traditional data processing tools.

• Big Data involves processing and analyzing massive amounts of data to uncover patterns, trends, and insights.

• It typically includes structured, semi-structured, and unstructured data from various sources.

• Examples of Big Data include social media data, sensor data, financial transactions, and healthcare records.

Disadvantages of cloud computing include security risks, dependency on internet connection, and potential downtime.

• Security risks: Data stored in the cloud can be vulnerable to cyber attacks and breaches.

• Dependency on internet connection: Users need a stable internet connection to access cloud services, which can be a limitation in areas with poor connectivity.

• Potential downtime: Cloud service providers may experience outages, leading to disruptions in access to data and appl...read more

OOP is used for organizing code into reusable objects, promoting code reusability, modularity, and easier maintenance.

• Encapsulation: Data and methods are bundled together in objects, promoting data security and code organization.

• Inheritance: Allows for the creation of new classes based on existing ones, promoting code reuse and reducing redundancy.

• Polymorphism: Objects can be treated as instances of their parent class, allowing for flexibility and extensibility.

• Modularity: Co...read more

Code logic refers to the reasoning behind the structure and flow of a program's code.

• Code logic involves understanding the sequence of steps in a program to achieve a desired outcome.

• It includes the use of conditional statements, loops, functions, and variables to control the flow of execution.

• Good code logic is efficient, readable, and maintainable.

• Example: If-else statements are used to make decisions in code logic.

React Hooks are functions that let you use state and other React features without writing a class.

• Hooks are introduced in React 16.8 to allow developers to use state and other React features in functional components.

• useState() is a Hook that lets you add state to functional components.

• useEffect() is a Hook that lets you perform side effects in functional components.

• Hooks provide a more concise and readable way to work with React components compared to class components.

The pillars of Object-Oriented Programming (OOP) are encapsulation, inheritance, and polymorphism.

• Encapsulation: Bundling data and methods that operate on the data into a single unit (object).

• Inheritance: Allowing a new class to inherit properties and behavior from an existing class.

• Polymorphism: The ability for objects of different classes to respond to the same message in different ways.

Projects are specific tasks or assignments undertaken to achieve a particular goal or objective.

• Projects are temporary in nature with a defined start and end date.

• They involve a unique set of activities, resources, and constraints.

• Projects are typically aimed at delivering a specific outcome or result.

• Examples include developing a new product, implementing a software system, or organizing an event.