Capgemini Interview Questions and Answers for 2025

Software products are broadly classified as follows: 

• System Software: This category includes software such as operating systems, compilers, and drivers. 
• Computer networking and web development software: Computer networking software provides the capability required for computers to connect with one another as well as with data storage facilities. 
• Embedded Software:  Software used in instrumentation and control applications such as washing machines, satellites, microwaves, televisions, and so on. 
• Artificial Intelligence Software: This category includes expert systems, decision support systems, pattern recognition software, artificial neural networks, and other forms of software. 
• Scientific software: This type of software primarily supports a scientific or engineering user's needs for accomplishing enterprise-specific activities. MATLAB, AUTOCAD, and other programmes are examples. 

A framework is a well-known software development and deployment strategy. It is a collection of tools that enables software development by offering knowledge on how to construct it on an abstract level rather than supplying specific specifics. The Software Process Framework serves as the foundation for all aspects of the software development process. The software process structure includes umbrella operations as well. 

The primary distinction between software and a programme is that software is a collection of numerous programmes used to execute tasks. In contrast, a programme is a set of instructions defined in a programming language. A programme can be software, but the reverse is not true. 

The Software Development Life Cycle (SDLC) is a set of key stages that teams must go through in order to create and deploy high-quality software. Typically, software passes through the following stages: 

• During the requirements gathering stage of the project, the team identifies, collects, and specifies essential issues, needs, requests, and customer expectations linked to the software application or service. Creating software requirements, developing a detailed strategy, documentation, problem tracking, and project or product planning, including resource allocation, are all tasks completed during this phase. 
• During the Software design phase of development, the team takes software design decisions on the architecture and make of the software product. 
• Software Development is where the Teams create software solutions based on design decisions made earlier in the project's lifecycle. 
• Software is packed and tested to assure quality via Testing and Integration. Quality assurance, often known as testing, guarantees that the solutions implemented meet the quality and performance requirements that have been established. 
• Deployment is the time where the programme is installed in a production environment. Customers and users of the software service are given access to the work that has been gathered, developed, created, and tested. 
• The programme is installed in a production environment for operation and maintenance. The effort is shared with clients and users of the software service.  

This is one type of Capgemini interview questions, and there are more to read. 

The waterfall SDLC technique is the simplest and easiest in software development. The development process is linear with this technique, and each phase is completed individually. Development, as the name indicates, proceeds downhill, much like a waterfall. In a waterfall model, the software must cover the following phases: 

• Requirements 
• Design 
• Implementation 
• Integration and testing 
• Deployment 
• Maintenance 

Case studies: 

• When the criteria are clear and immutable. 
• There are no confusing prerequisites or requirements. 
• When the technique is thoroughly understood 
• The duration of the project is quick, and the cast is modest. 
• The danger is insignificant. 

One of the most frequently posed Capgemini interview questions for freshers, be ready for it.

A software prototype is a functioning model with restricted capabilities. The prototype may or may not contain the precise logic utilized in the final software programme, and so is additional labour that should be incorporated in the calculation. Users may examine developer suggestions and test them before they are implemented through prototyping. It also aids in understanding user-specific information that the developer may have overlooked during product development. 

POC (Proof of Concept) is a method used by businesses to validate the feasibility of an idea or concept. The stage exists prior to the commencement of the software development process. 

A micro project is designed to test whether an idea can be performed based on technical competence and business model. 

With an emphasis on risk analysis, the spiral model is a mix of the iterative development process and the waterfall approach. The development process in the SDLC Spiral model begins with a restricted set of requirements and proceeds through each development phase. Until the programme is ready for production, the software engineering team adds features in ever-increasing spirals to meet the escalating demand. 

The spiral model has the following drawbacks: 

• It is far more sophisticated than other SDLC models. The method is complicated. 
• It is not recommended for small projects due to its excessive cost. 
• Risk analysis is highly dependent and requires a high level of expertise. 
• Time estimate is difficult. 
• The spiral might go on indefinitely. 

A baseline is a milestone and reference point in software development characterized by the completion or delivery of one or more software deliverables. The baseline's major goal is to reduce and manage vulnerability or project flaws that can easily harm the project and lead to unpredictable changes. 

SRS is a formal report that acts as a representation of software, allowing customers to determine whether it fits their requirements. It is a set of specifications for a certain software product, application, or set of apps that perform specified activities in each environment. It also comprises system user requirements as well as exact system requirements specifications. It serves a multitude of functions depending on who writes it. 

CASE tools are a group of software applications that automate SDLC procedures. CASE tools that simplify various stages of the Software Development Life Cycle include analysis tools, design tools, project management tools, database management tools, and documentation tools. 

Modularization is the process of breaking down a program's functionality into discrete, independent modules, each of which contains only the information required to carry out one component of the desired capacity. Simply said, it is the process of splitting the programme into smaller modules so that we may deal with them independently. We can easily add separate and smaller modules to a programme using modularization without being constrained by the intricacy of the program's other functions. Modularization is founded on the idea of creating programmes that are self-contained and easy to create and maintain. In monolithic architecture, on the other hand, there is always the danger of a minor change bringing the entire programme down. The final stage would be to connect these separate units.  

This is a question that is asked in both Capgemini interview questions for freshers and advanced.

On this question, you should emphasize your enthusiasm for the open-source ecosystem as a proxy for your enthusiasm for software engineering and your capacity to be proactive in contributing. 

You should have a list of resources available, but more importantly, you should be careful about really following resources in space. This demonstrates your capacity to learn new things and your enthusiasm for doing so, which is essential in a subject that is always changing. Here is one Hackernoon resource from which you may learn.

Choose a straightforward topic or notion that is simple to describe and that the interviewer will comprehend. Making the response enjoyable will aid in engaging the interviewer. Keep your response cheerful. Remember that the delivery and demonstration of your communication and teaching abilities are more essential than the topic. 

Choose a web technology and describe it, as well as the reasons (such as technical and community support) why it could outperform other web technologies.  

This question attempts to measure your enthusiasm for web development and your interest in upcoming technologies, as well as your strategic vision for the future of online development. 

Expect to come across this popular question in Capgemini interview questions and answers.

When developing software, there is always room for improvement. Changes may be necessary to alter or improve an existing solution or to provide a new solution to a problem. Changes to the current system should be assessed before they are implemented, recorded before they are implemented, documented with before and after details, and regulated in a way that increases quality and lowers mistakes. This is where System Configuration Management comes in. 

During the Software Development Life Cycle, Software Configuration Management (SCM) is a strategy for systematically managing, organizing and regulating changes in documents, codes, and other entities. The key objective is to increase output while making as few mistakes as possible. 

Concept: 

• C++ is not platform-independent; the C++ programming philosophy is "write once, compile anywhere." 
• Java applications, on the other hand, are written once and run everywhere because the byte code generated by the Java compiler is platform-independent and can run on any system. 

Compatibility of languages: 

• C++ is a computer language built on the C programming language. Most other high-level languages are C++-compatible. 
• Most Java languages are incompatible. Java's capabilities are equivalent to those of C and C++. 

Engagement with the library: 

• In C++, it has direct access to the native system libraries. As a result, it's superior for system-level programming. 
• Java's native libraries do not support direct calls. 
• You can access the libraries or utilize the Java Native Interface. 

Characteristics: 

• C++ distinguishes itself by sharing features with procedural and object-oriented programming languages. The feature that distinguishes Java is automated garbage collection. Destructors are not currently supported by Java. 

The type's semantics: 

• In C++, primitive and object types have the same meaning. Java's primitive and object classes, on the other hand, are inconsistent. 

In terms of Compiler and Interpreter: 

• Java is a compiled and interpreted programming language. C++, on the other hand, is merely a compiled language. 
• The source code in Java is the compiled result, which is a platform-independent byte code. 
• The source programme in C++ is compiled into object code, which is then run to create output. 

Some of the most important characteristics of the Java Programming Language are: 

• Java is a language that is considered simple to learn. One essential notion of OOP Java must be understood. 
• Java offers a secure feature that aids in the development of a virus-free and tamper-proof system for users. 
• OOP is an abbreviation for Object-Oriented Programming language. OOP denotes that everything in Java is considered an object. 
• Java is not compiled into a platform-specific machine; rather, it is compiled into platform-independent bytecode. The Virtual Machine that operates the platform interprets this code. 

In Java, a classloader is a component of the Java Virtual Machine that is responsible for loading class files when a programme is executed; ClassLoader is the first to load the executable file. 

Java classloaders include Bootstrap, Extension, and Application. 

An association is a partnership that has no ownership over another. For example, a person can be affiliated with many banks, and a bank can be associated with various persons, but no one can own the other. 

The phrase aggregation refers to the relationship between two classes that is best defined as a "whole/part" and "has-a" relationship. This is the most specific kind of association connection. It holds a reference to another class and is said to own that class. 

There are also Capgemini HR interview questions in this article so do check them out. 

The Java String Pool is a collection of strings in Java's Heap memory. When you try to create a new string object, JVM first checks to see if the object is already in the pool. If an object reference is present, it is shared with the variable; otherwise, a new object is generated. 

In Java, an exception is defined as an unexpected occurrence that can disturb the usual flow of the program. These events can be resolved using the Exception Handling mechanism. 

In Java, the term final is a predefined phrase that is used when declaring values for variables. 

When a variable is declared using the final keyword, its value remains constant during the program's execution. 

When the main method is not defined as static, the programme may compile successfully but results in a significant ambiguity and raises a run time error with the message "NoSuchMethodError." 

We've completed the first segment, Basic Java Interview Questions. Let's move on to the next level, Intermediate Java Interview Questions. 

JVM includes a Just in Time (JIT) compiler tool that turns all Java source code into a machine language that is low-level compatible. As a result, it performs faster than the standard application. 

JRE includes class libraries as well as other JVM-related items. However, it lacks any java programming tools, such as a compiler or debugger. 

JDK includes the tools needed to create Java programmes, which are then executed by JRE. It includes a compiler, a Java application launcher, and a viewer for applets.  

In Java, there are two kinds of constructors. 

• Parameterized Constructors: A parameterized function Object() { [native code] } takes arguments with which users can initialise instance variables. Users can dynamically initialise the class variables when they instantiate the class. 
• Default constructors: This type does not accept any parameters; instead, it instantiates the class variables with their default values. It is mostly used for object creation. 

The use of generics provides compile-time type safety. Compile-time type safety allows users to discover redundant invalid types during the compilation process. Generic methods and classes allow programmers to specify a single method declaration, a group of related methods, or a set of related types with an accessible class declaration. 

• The Externalizable interface assists in regulating the serialisation process. A "externalisable" interface contains readExternal and writeExternal methods. 
• The Externalizable interface aids in controlling the serialisation process. ReadExternal and writeExternal methods are included in a "externalisable" interface. 

Microservice architecture tests are classified into three types: 

• At the most basic level, we may run generic tests such as performance and unit tests. These tests are completely automated. 
• At the intermediate level, we may do exploratory testing such as stress tests and usability tests. 
• At the highest level, we may do acceptance tests, which are often minimal in number. It also helps stakeholders understand about various software functions.