Top 50 Infosys Interview Questions and Answers

Infosys is a well-known multinational company that focuses on offering IT services and advising businesses worldwide. If you’re getting ready for an interview at Infosys, it’s essential to familiarize yourself with typical questions that are asked during the interview. To help you ace the interview, in this blog, we have compiled a list of top Infosys interview questions and answers. This will give you insights into what recruiters are looking for and how best to showcase your skills during the interview process.

Infosys Interview Process

The Infosys recruitment process is designed to evaluate a candidate’s technical skills, problem-solving abilities, and overall suitability for the role. The process typically involves three main stages: an online assessment test, a technical interview, and an HR interview.

i. Online Assessment Test

The first step is the online assessment test, which helps filter candidates based on their basic abilities. It consists of three sections:

1. Logical Analytical Reasoning: This section tests your ability to think logically through questions on data sufficiency, visual reasoning, syllogisms, coding-decoding, and analogies. 
2. Quantitative Aptitude: This part includes questions on topics like permutations and combinations, time and speed, probability, percentages, and ratio and proportion. The difficulty ranges from moderate to hard, requiring good mathematical skills.
3. Verbal Ability: This section assesses your English language skills through tasks like paragraph completion, synonyms and antonyms, para-jumbles, and sentence completion. The questions are generally easy to moderate in difficulty.

ii. Technical Round

The technical round digs deeper into your technical knowledge and problem-solving skills. You can expect questions in this round related to the following topics:

1. Algorithms and Data Structures: You should understand fundamental algorithms and data structures, as these are key for solving complex problems.
2. Programming Languages: You need to be proficient in at least one programming language, as coding questions will be asked.
3. Core Concepts: Be prepared to discuss Object-Oriented Programming (OOP), Database Management Systems (DBMS), Computer Networks (CN), and Operating Systems (OS).
4. Puzzles and Aptitude Questions: These questions will test your logical thinking and problem-solving abilities.
5. Emerging Technologies: Stay updated on the latest technologies in your field of interest, as you may be asked about them.

iii. HR Interview Round

The HR interview assesses your personality, motivations, and fit for the company. In this round, you can expect questions in this round related to the following topics:

1. Educational Background: You will have to talk about your academic journey and how it has prepared you for this role.
2. Skills and Hobbies: You will be asked about your interests, hobbies, and any additional skills relevant to the role.
3. Expectations: You will share what you expect from the position and the company and how you see your future at Infosys.

This thorough interview process helps Infosys find candidates who are technically capable and a good fit for the company’s culture.

Infosys Interview Questions for Freshers

Here are the top Infosys interview questions and answers for freshers and entry-level candidates.

Q1. Why is Object-Oriented Programming (OOP) important?

Answer: Object-oriented programming in Java enables programmers to program faster and more efficient execution. It also offers a well-defined framework for programs. In addition, OOP promotes the principle of “Don’t Repeat Yourself” in Java code, making it simpler to maintain, alter and troubleshoot.

Q2. Why do you think we should adopt Object-Oriented Programming (OOP)?

Answer: In Object-Oriented Programming, the combination of data states and code allows for private management of intricacies. This can be compared to a car, where only the steering is visible while driving and the underlying circuitry remains hidden. 

OOP architecture leads to adaptable, versatile, and expressive code, which makes it ideal for larger program development. The implementation of OOP in programming involves using classes and objects that contain all relevant states and functions within their respective categories.

Q3. What distinguishes a session from a socket?

Answer: A session refers to a coherent link formed between the origin and target. A socket serves as the tangible device (comprising of an IP address and Port Number) employed for executing a session.

Q4. What principles form the foundation of Object-Oriented Programming (OOP)?

Answer: The key principles that form the foundation of OOP are:

• Abstraction: Abstraction focuses on the essential qualities and hides unnecessary details. 
• Encapsulation: Encapsulation bundles data and functions into a single unit called a class 
• Inheritance: Inheritance promotes the reuse of common logic through parent-child class relationships.
• Polymorphism: Polymorphism allows the same interface to be used for different forms of data.

Q5. What distinguishes TCP from UDP?

Answer: UDP is a connectionless protocol, while TCP follows a connection-oriented approach. Compared to TCP, UDP is simpler, faster, and more efficient.

Q6. How does method overloading differ from method overriding in OOP?

Answer: Method overloading is when a class has multiple methods that share the same name but have different parameters. On the other hand, method overriding involves creating a method in a child class with identical name, parameters, and return type as one of its parent’s methods.

Q7. What exactly are SQL triggers? 

Answer: A trigger in SQL is a component that alerts when an event occurs within a database. For instance, it can be configured to log the removal of data from the database.

Q8. Define Automation Testing

Answer: Automation testing refers to the process of automating manual tests for an application or system being tested. This involves utilizing specialized tools to develop test scripts that can be executed multiple times without human intervention.

Q9. Define a network and its corresponding node.

Answer: A network refers to a group of interconnected devices connected through physical means. A node, also known as a device, is part of this network. For example, if there are two computers and one web server connected to the same network, it can be described as having five nodes in total.

Q10. How do SQL and MySQL differ from each other? 

Answer: SQL and MySQL differ from one another in the following ways

• SQL is a programming language designed for querying RDBMS systems, while MySQL is an RDBMS that utilizes SQL. 
• The main use of SQL is to manipulate database systems, whereas MySQL enables users to manage, store, edit, and delete data in a structured manner.

Infosys Technical Interview Questions and Answers

If you are preparing for an Infosys company interview, it is important to familiarize yourself with these common Infosys technical interview questions and answers.

Q11. Define SDLC.

Answer: The Software Development Lifecycle (SDLC) is a cost-effective and efficient process used by development teams to design and create top-notch software. Its main objective is to reduce project risks through careful planning, ensuring that the final product meets customer expectations both during production and in the long run.

Q12. Elaborate on key distinctions between C and C++.

Answer: A major distinction between C and C++ is that, while C lacks support for classes and objects, it is a procedural programming language. In contrast, C++ builds upon C by incorporating object-oriented programming (OOP).

Q13. Define Structs.

Answer: Structs in C/C++ are user-defined data types that represent a record. They can contain heterogeneous data types, unlike arrays or unions. They provide data abstraction by combining data variables to manipulate them together.

Q14. Distinguish between reference and pointer.

Answer: A pointer contains the location of another variable it is referencing, whereas a reference serves as an alternate name for accessing an already existing variable.

Q15. Can you describe the waterfall model?

Answer: The waterfall model, widely used in software engineering and product development, is a linear and sequential approach to the software development lifecycle (SDLC). In this method, SDLC steps are followed logically throughout the project’s progression just like how water flows over a cliff’s edge.

Q16. Define a pointer and provide an example.

Answer: A pointer is a variable that stores the memory location of another variable. Unlike regular variables, which hold specific values, pointers store the address of other variables. For instance, an integer would contain its value while an integer pointer contains the location of an integer variable.

Q17. Provide examples of data structures in C++.

Answer: Examples of data structures in C++ are:

• Arrays
• Stacks
• Queues
• Linked lists
• Trees
• Graphs 
• Hash tables

Q18. Explain the process of dynamic memory allocation in C/C++.

Answer: Dynamic allocation involves the runtime allocation and deallocation of memory. This means that a C++ program must allocate or de-allocate memory throughout its execution. As such, it is the responsibility of the programmer to properly deallocate any dynamically allocated memory no longer needed by the program.

Q19. Identify the most prevalent SDLC model.

Answer: Since its inception in 2001, the Agile model has become widely accepted as the industry norm. Many companies hold the Agile methodology in such high regard that they utilize it for non-technical projects as well.

Q20. What are virtual functions?

Answer: Virtual functions in C++ are member functions in a class that is declared to be virtual using the virtual keyword. They can be overridden in derived classes, while non-virtual functions cannot be overridden.

Infosys HR Interview Questions with Answers

Here are some frequently asked Infosys HR interview questions to assess the candidacy of different professionals.

Q21. What are your greatest strengths?

Tip: You can answer ‘What are your strengths and weaknesses’ in this way: 

Answer: ‘My greatest strengths are strong technical skills, quick learning ability, excellent communication, and rigorous work ethic. Additionally, I am adept at continuously upgrading my skills and believe in lifelong learning.’

Q22. How would you describe your approach to work?

Answer: I approach work with a strong sense of organization and efficiency. I prioritize tasks based on their importance and strive to complete them on time while maintaining attention to detail and producing high-quality results.

Q23. What are your aspirations for the next 10 years?

Tip: You can answer the question ‘Where do you see yourself in 10 years’ in the way given below.

Answer: ‘In the next 10 years, I aspire to become a leading technical architect and lead large, complex projects. I want to build expertise in cloud computing using the latest tools. I also aim to coach and mentor junior engineers to help build their careers.’  

Q24. How do you believe you could contribute to our organization?

Answer: I am confident that my strong analytical and problem-solving skills, along with my experience in the technology industry, would allow me to make valuable contributions to your organization. 

Besides contributing to high-quality design and writing innovative code to enhance existing solutions. I can also thoroughly test products and maintain rigorous standards. I will bring the latest technical expertise and lead teams effectively with my mentoring abilities.

Q25. Can you tell us about yourself?

Tip: Here is a comprehensive the correct way to respond to the query, “Tell me about yourself.”

Answer: ‘I am a motivated computer science engineer with 5 years of hands-on experience in building and deploying scalable distributed systems. I excel in Java and have expertise in SQL and scripting. I have led small teams and believe in a collaborative work culture.’ 

Q26. Do you work well in a team?

Tip: Here is the perfect approach to answering the question. “Are you a team player?

Answer: ‘Yes, I thrive in collaborative environments and believe team success drives individual growth. My communication and problem-solving skills allow me to cooperate and coordinate seamlessly in teams.’

Q27. Are you open to relocation or travel?

Tip:  Here is the perfect response to the question, “Are you willing to relocate or travel?”

Answer: ‘Yes, I am open to relocation or travel for the right opportunity. I believe it will provide me with new experiences and opportunities for personal growth while contributing my skills and expertise to a different location or project.’

Q28. What motivates your interest in joining Infosys?

Answer: I am drawn to Infosys because of its reputation as a global leader in technology and consulting services. I am also inspired by the company’s commitment to innovation, diversity, and social responsibility. Moreover, I believe that working at Infosys will provide me with ample growth opportunities, both personally and professionally.

Q29. Can you handle pressure effectively?

Answer: Yes, I am confident in my ability to handle pressure effectively. Through proper time management and prioritization techniques, along with effective communication and problem-solving skills, I believe that I can thrive under high-pressure situations without compromising the quality of my work.

Q30. Can you explain areas you need improvement on?

Answer: I feel that there is room for improvement in my communication skills as well as time management abilities. With practice and training, I am confident that I can excel in these areas and contribute effectively to any project at Infosys.

Infosys Interview Questions and Answers For Experienced Candidates

Here are the common Infosys interview questions and answers for candidates with relevant years of experience.

Q31. Define database Schema.

Answer: Database schema refers to the logical structure and organization of data in a database. It includes database objects like tables, views, sequences, stored procedures, and attributes that define column names, data types, constraints, keys, triggers, etc.

Q32. Explain the file extensions DLL and EXE.

Answer: DLL refers to Dynamic Link Library, while EXE refers to Executable file in Windows. DLL contains compiled code and data that can be shared, while EXE can be executed directly. DLL provides modularity, while EXE is a self-contained program.

Q33. Describe the various levels of programming languages.

Answer: Here are the 3 types of programming languages:

• Machine Language: It is the lowest level of programming language that consists of only binary code, which means 0s and 1s. It directly communicates with hardware components such as the CPU (Central Processing Unit), memory, etc.
• Assembly Language: Assembly language is also known as “Assembler”. This type of coding uses a symbolic representation for instructions instead of actual machine-level operations, like in machine languages. Each instruction corresponds to one or more basic operations performed by the computer’s processor.
• High-Level Programming Languages: High-Level Programming Languages are easier for humans to write than low-level codes because they use natural words and syntax similar to human languages rather than numeric codes or symbols. Some examples include Python, Java, C++, and PHP.

Q34. Why is indexing useful in SQL?

Answer: Indexing in SQL speeds up select queries and where clauses by facilitating faster searches instead of full table scans. It creates alternate balanced search trees, avoiding the need to traverse all records.

Q35. Define a stored procedure.

Answer: A stored procedure is a pre-written SQL code that can be saved and reused multiple times. It allows for the efficient execution of frequently used SQL queries by simply calling upon it instead of writing out the entire query each time.

Q36. What is the significance of a NULL pointer in C?

Answer: A null pointer refers to a pointer that does not point to any specific location in memory. This can serve various purposes, including: 

• Initializing a pointer variable when it has not been assigned a valid memory address yet.
• Passing a null pointer as an argument to avoid passing a valid memory address for that particular function parameter.

Q37. Define a frame in HTML.

Answer: The <frame> tag in HTML is designed to specify a specific section of an HTML document where another webpage can be loaded. To use this functionality, the <frameset> element must also be included, which divides the page into different frames that each contain their separate content from various sources. With this feature, users can interact with several web pages at once within a single browsing session on any given site.

Q38. Explain the concept of Object-Relational DBMS.

Answer: Object-relational database is a bridge between two different approaches by enabling users to incorporate data types, and operators in RDBMS like OOP concepts of inheritance, polymorphisms, and user-defined types for rich data modeling.

Q39. What is the purpose of “return 0”?

Answer: In the program, 0 is returned in both the main function and the help function to indicate the successful execution of the program and retrieve values from functions.

Q40. Define access specifiers.

Answer: An access specifier is a code element that defines which elements within a program have permission to access certain variables or data.

Q41. Explain the term Annotation.

Answer: Annotations serve as additional information attached to a class, used to represent the metadata library. Upon annotation of a class by the user, an annotations property is generated and an array of annotations is stored within it. 

The compiler then tries to create an object with a matching name as the annotation and passes relevant details into its constructor. In AngularJs, there are no preset rules for naming these annotations. They can be chosen at our discretion.

Q42. Define the term object repository

Answer: A repository of objects allows testers to gather elements from the application being tested, along with their corresponding locator values, and store them in a central location. This eliminates the need for hard-coding these elements directly into test scripts.

Q43. Explain the term Xpath

Answer: Although DOM is commonly used for navigating HTML element trees, XPath offers an alternative method to locate web elements using their XML path. XML, or ‘Extensible Markup Language,’ serves as a protocol for storing and organizing data. It functions similarly to HTML tags by utilizing key-value pairings. 

Due to their shared classification under markup languages, both XPath and HTML can be utilized in finding specific elements within a webpage. XPath’s primary function involves traversing through multiple elements on the page to find one particular element based on another referenced element. This allows users greater flexibility when locating desired webpage components.

Q44. How can you add a breakpoint in Selenium IDE?

Answer: To insert a breakpoint, follow these steps:

• Right-click on the command in Selenium IDE.
• Select ‘Toggle Breakpoint’ from the menu.
• Press ‘B’ on your keyboard to select the command as a breakpoint.

You can also remove breakpoints using this method by repeating step 1 and selecting ‘Remove Breakpoint.’

Q45. What are some reasons why Selenium is more popular than QTP?

Answer: Below are some of the major reasons why Selenium is more popular than QTP: 

• Selenium is a free and open-source tool, while QTP requires payment. 
• Selenium specializes in testing web-based applications, whereas QTP can also be used for client-server applications. 
• Selenium offers compatibility with multiple browsers (such as Firefox, Internet Explorer, Opera, and Safari) and operating systems (including Windows, Mac, and Linux), unlike the limited capabilities of only using Internet Explorer on Windows with QTP.
• Selenium allows users to utilize various programming languages such as Python, Ruby, and Perl, whereas QTC solely supports VBScript making it less versatile compared to Selenium.

Q46. Can you define a constructor in Object-Oriented Programming (OOP)?

Answer: A constructor in OOP is a special method that is invoked automatically when an object of a class is instantiated. It is used to initialize the data members of new objects to the desired values.

Q47. What are the drawbacks of Object-Oriented Programming (OOP)?

Answer: Object-oriented programs tend to have a larger program size compared to procedural ones, as they involve more lines of code. Additionally, object-oriented programs also tend to run slower than procedure-based programs due to the increased number of instructions needed for execution.

Q48. What is the definition of a class in Object-Oriented Programming (OOP)?

Answer: A class in OOP is a programmer-defined data type that encapsulates data variables and functions. It serves as a template to create objects which are instances of the class at runtime. Class is a building block that models real-world things.

Q49. Define the concept of an Object in Object-Oriented Programming (OOP).

Answer: An object is a data field that possesses distinctive characteristics and functions. OOP emphasizes the manipulation of objects rather than the logic needed to manipulate them. This programming method is particularly suitable for managing large, intricate programs that undergo frequent updates or maintenance.

Q50. Could you provide a succinct overview of Object-Oriented Programming (OOP)?

Answer: Object Oriented Programming, commonly referred to as OOPs, is a programming paradigm that focuses on organizing programs around objects instead of just functions and logic. This approach involves dividing data into two distinct memory areas – one for storing the actual data and another for holding related functions. By doing so, it enables developers to write code in a more flexible and modular manner.

Infosys Interview Preparation Tips

While practicing these Infosys company interview questions, it is equally important to familiarize yourself with other criteria of the interview. Here are effective tips to help you ace your interview:

1. Prepare and Practice

During HR interviews, it is common to encounter behavioural interview questions that aim to evaluate your outlook on life. It would be beneficial for you to have prepared examples that showcase your capability in dealing with pressure, managing conflicts, and finding solutions in challenging situations.

2. Study Industry Trends

It is important to keep yourself updated on the most recent developments, advancements, and regulations at Infosys. This showcases your dedication towards personal development and remaining up-to-date within your profession.

3. Highlight Skills and Expertise

Share your personal experience in areas directly relevant to the industry you work in. Also, highlight the soft skills necessary for success in the position. Emphasize your expertise in establishing connections, conveying information effectively, and handling confidential matters with discretion.

Conclusion

Preparing and practising for Infosys interview questions requires both technical knowledge and strong communication skills. By familiarizing yourself with common questions and practising your responses beforehand, you can increase your chances of performing well in the interview process. Also, highlight any relevant experience or achievements that showcase your abilities as a potential candidate for the company.

If this has been helpful to you, leave us your thoughts and suggestions in the comment section below. Also, check out this guide on how to ace a job interview.

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