20+ Global Buzz Makers Interview Questions and Answers

Cloud based services refer to services and resources delivered over the internet. Companies are shifting to cloud for scalability, cost savings, flexibility, and improved collaboration.

• Scalability: Companies can easily scale their resources up or down based on demand without investing in physical infrastructure.

• Cost savings: Cloud services eliminate the need for companies to purchase and maintain expensive hardware, leading to cost savings.

• Flexibility: Cloud services offer fl...read more

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

OOPs stands for Object-Oriented Programming. It is a programming paradigm based on the concept of objects, which can contain data and code.

• Types of OOPs include: Inheritance, Encapsulation, Polymorphism, and Abstraction.

• Inheritance allows a class to inherit properties and behavior 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.

• Abstracti...read more

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

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

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

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

I have worked on implementing blockchain technology, developing machine learning algorithms, and creating mobile applications.

• Implemented blockchain technology for secure and transparent transactions

• Developed machine learning algorithms for predictive analytics

• Created mobile applications for iOS and Android platforms

List comprehension is a concise way to create lists in Python by applying an expression to each item in an existing list.

• List comprehension is written inside square brackets []

• It consists of an expression followed by a for clause, then zero or more for or if clauses

• Example: squares = [x**2 for x in range(10)]

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

DBMS stands for Database Management System, which is a software system that allows users to define, create, maintain and control access to databases. SQL stands for Structured Query Language, which is a standard language for accessing and manipulating databases.

• DBMS is a software system that allows users to define, create, maintain and control access to databases

• SQL is a standard language for accessing and manipulating databases

• DBMS examples include MySQL, Oracle, SQL Server

• S...read more

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.

A data server is a computer system or software application that provides data to other computers or applications over a network.

• Data servers store and manage data for easy access by clients

• They can be physical servers or virtual servers

• Examples include SQL Server, Oracle Database, MongoDB

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

Normalization is the process of organizing data in a database to reduce redundancy and improve data integrity.

• Normalization involves breaking down data into smaller, more manageable tables

• It helps in reducing data redundancy by storing data in a structured way

• Normalization ensures data integrity by avoiding update anomalies

• There are different normal forms like 1NF, 2NF, 3NF, BCNF, etc.

• Example: In a database, instead of storing customer details in multiple tables, we can norma...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.