20+ Deloitte Software Engineer Interview Questions and Answers

Stored procedures are precompiled SQL statements that can be executed on demand, while triggers are automatically executed in response to specific events.

• Stored procedures are explicitly called by the user, while triggers are automatically invoked by the database system.

• Stored procedures can accept parameters and return values, while triggers cannot.

• Stored procedures can be executed independently, while triggers are always associated with a specific table or view.

• Stored proce...read more

Access specifiers in C++ are keywords that determine the visibility and accessibility of class members.

• There are three access specifiers in C++: public, private, and protected.

• Public members are accessible from anywhere in the program.

• Private members are only accessible within the class itself.

• Protected members are accessible within the class and its derived classes.

• Access specifiers are used to enforce encapsulation and control the access to class members.

Kernel is the core component of an operating system that manages system resources and provides a bridge between hardware and software.

• Kernel is responsible for managing memory, processes, and device drivers.

• It provides an interface for applications to access hardware resources.

• Kernel operates in privileged mode and has direct access to the hardware.

• Examples of popular kernels are Linux kernel, Windows NT kernel, and macOS kernel.

printf() and scanf() are used for input/output operations in C programming language.

• printf() is used to print output on the console or terminal.

• scanf() is used to take input from the user.

• printf() and scanf() are part of the standard input/output library in C.

• printf() uses format specifiers to format the output.

• scanf() uses format specifiers to read input from the user.

Answering questions related to REST API, Spring MVC, Spring Boot, abstract class, and interfaces.

• REST API is a set of rules for building web services. It uses HTTP methods to access resources.

• Spring MVC is a framework for building web applications using the Model-View-Controller architecture.

• Spring Boot is a framework for building standalone, production-grade Spring-based applications.

• An abstract class is a class that cannot be instantiated and is meant to be subclassed.

• An in...read more

Polymorphism is the ability of an object to take on many forms.

• It allows objects of different classes to be treated as if they were objects of the same class.

• It can be achieved through method overloading or method overriding.

• Example: A shape class can have different subclasses like circle, square, etc. and all can be treated as shapes.

• It helps in achieving code reusability and flexibility.

Operator overloading allows operators to have different meanings based on the operands they work on.

• It allows operators to be used with user-defined data types

• It can simplify code and make it more readable

• Examples include using the + operator to concatenate strings or add numbers

• Operators can be overloaded for unary and binary operations

Static variables and functions are those that retain their values throughout the program's execution.

• Static variables are declared with the 'static' keyword and are initialized only once.

• Static functions are also declared with the 'static' keyword and can only be called within the same file.

• Static variables and functions have a global scope within the file they are declared in.

• Examples of static variables include counters and flags.

• Examples of static functions include helper ...read more

A nested structure is a data structure that contains other data structures within it.

• It is a way of organizing data in a hierarchical manner.

• It can be used in programming languages like C, Java, and Python.

• Examples include arrays of structures, structures containing arrays, and structures containing other structures.

• It can be used to represent complex data such as trees and graphs.

Encapsulation is the process of hiding implementation details and providing a public interface for accessing the object.

• Encapsulation helps in achieving data abstraction and information hiding.

• It prevents unauthorized access to the internal state of an object.

• It allows for better control over the data and its behavior.

• Example: A bank account class with private variables for balance and account number, and public methods for deposit and withdrawal.

• Example: A car class with pri...read more

Changes in COBOL programs depend on the specific requirements and goals of the project.

• Changes may involve modifying existing code to add new functionality or improve performance.

• Updates may also be necessary to ensure compatibility with new hardware or software systems.

• Refactoring code to improve readability and maintainability is another common change.

• Examples of changes include adding new data fields, modifying conditional statements, and updating file handling procedures.

Java doesn't support operator overloading to maintain simplicity and avoid ambiguity.

• Java was designed to be a simple language, and operator overloading can make code more complex and harder to read.

• Operator overloading can also lead to ambiguity in code, making it difficult to understand the intended behavior.

• Java provides alternative ways to achieve the same functionality as operator overloading, such as using methods with descriptive names.

• Other languages like C++ and Pyth...read more

Encapsulation, Inheritance, Polymorphism, Abstraction are the 4 pillars of OOPS

• Encapsulation: Bundling data and methods that operate on the data into a single unit. Example: a car with its properties and methods.

• Inheritance: Ability of a class to inherit properties and behavior from another class. Example: a child class inheriting from a parent class.

• Polymorphism: Ability to present the same interface for different data types. Example: a function that can operate on different...read more

SOLID principles are a set of design principles in object-oriented programming that help in creating maintainable and scalable software.

• S - Single Responsibility Principle (SRP)

• O - Open/Closed Principle (OCP)

• L - Liskov Substitution Principle (LSP)

• I - Interface Segregation Principle (ISP)

• D - Dependency Inversion Principle (DIP)

ASP.NET is a framework for building web applications using .NET, while ASP.NET Core is a cross-platform, high-performance version of ASP.NET.

• ASP.NET is Windows-only, while ASP.NET Core is cross-platform and runs on Windows, macOS, and Linux.

• ASP.NET Core is open-source and modular, allowing developers to include only the necessary components in their applications.

• ASP.NET Core has better performance and scalability compared to ASP.NET.

• ASP.NET Core supports dependency injection ...read more

ASP.NET is a web application framework developed by Microsoft for building dynamic web sites, web applications, and web services.

• ASP.NET allows developers to build dynamic web applications using languages like C# or VB.NET

• It provides a rich set of tools and libraries for building web applications

• ASP.NET supports various technologies like Web Forms, MVC, and Web API

• It is integrated with Visual Studio for easy development and debugging

• ASP.NET Core is the latest version of ASP.N...read more

Fail fast prioritizes speed of detection and resolution, while fail safe prioritizes safety and minimizing harm.

• Fail fast approach is commonly used in agile development where quick feedback is essential

• Fail safe approach is commonly used in critical systems such as medical devices or aviation

• Fail fast can lead to more errors and instability if not properly managed

• Fail safe can lead to slower response times and increased complexity

• Both approaches have their place depending on ...read more

Designing a user interface for an application involves creating a visually appealing and user-friendly layout.

• Consider the target audience and their needs

• Use a clean and intuitive design with easy navigation

• Include relevant features and functionalities

• Ensure consistency in design elements such as colors, fonts, and spacing

• Test the UI for usability and make necessary adjustments

Yes, I am able to switch locations for work if required.

• I am open to relocating for the right opportunity

• Have previous experience moving for work

• Willing to consider different cities or countries for work