Infosys Interview Questions By ScholarHat

1. Frequently Asked Infosys Interview Questions Infosys Interview Questions Infosys interview questions are designed to assess a candidate's problem-solving abilities and coding efficiency. You should be ready to handle a variety of coding challenges, from basic concepts like loops and arrays to more complex topics involving algorithms and data structures. In this interview tutorial, I will explain crucial questions, provide guidance on how to approach each one, and explain why mastering these topics is essential for excelling in the interview and establishing a solid foundation for your tech career. What to Expect in Infosys Interviews? When preparing for an Infosys interview, it’s essential to understand the interview process and the kinds of questions you’ll face. Depending on your role, you might encounter technical, behavioral, or managerial questions. So, having a clear idea of the interview process can help you ace it. Understanding the Infosys Interview Process Infosys interview process generally consists of multiple rounds. Here's an overview of what to expect:

2. Section Description Eligibility Criteria Educational Qualifications: A degree in Computer Science, Engineering, or related fields. Minimum Academic Performance: A minimum of 6.5 CGPA or equivalent. Work Authorization: Valid work authorization or visa (if required for the location). Online Application Submit your resume and application through the Infosys careers portal. Recruitment Process Online Assessment: Includes questions on aptitude, logical reasoning, and technical skills. Coding Round: Programming challenges, typically using C, C++, Java, or Python. Technical Interviews: Multiple rounds assessing problem-solving skills, coding, and system design knowledge. Behavioral Interviews: Focus on communication, teamwork, and alignment with Infosys values. Interview Rounds Technical Interviews: Assessment of data structures, algorithms, and coding proficiency. System Design: For experienced candidates, evaluating scalable and efficient system designs using Design Patterns and Microservices. Behavioral Interviews: Assessment of leadership skills, teamwork, and adaptability. HR Round: A final round to discuss relocation, career goals, and cultural fit at Infosys. Technical Questions (Freshers) Interview Arrays: Basic array operations and problem-solving using single and multidimensional arrays. Strings: String manipulation, pattern matching, and related problems. Linked Lists: Implementing singly and doubly linked lists, as well as operations like insertion, deletion, and traversal. Sorting Algorithms: Common algorithms like quicksort, mergesort, and bubble sort, with examples in Java. Technical Questions (Experienced) Interview Advanced Programming: Multithreading, Design Patterns, and Distributed Systems. System Design: Designing scalable and fault-tolerant architectures using Microservices and Scalability principles. Cloud Computing: Proficiency with Azure and AWS services, CI/CD pipelines, and Kubernetes.

3. HR Interview Questions Why do you want to join Infosys? Describe a time when you faced a challenging situation and how you handled it. How do you prioritize and meet deadlines? Are you open to relocating or traveling for work? Tell me about a time you worked in a team and managed a conflict effectively. Technical Infosys Interview Questions Freshers and Experienced If you’re applying for a technical role, be prepared to demonstrate your knowledge through coding, problem- solving, and technical discussions. Below are some common technical roles and questions for each. Infosys Interview Questions For Java Developer If you’re preparing for an interview as a Java developer at Infosys, you'll encounter some key questions that test your understanding of Java concepts and programming principles. It’s essential to grasp both the fundamental and advanced topics to showcase your skills effectively. Q1. What is the difference between "==" and ".equals()" in Java? Focus:Object comparison and memory handling. What to Expect: Explain the distinction between comparing references (==) and comparing object contents (.equals()). Describe how this works with strings and other objects. Sample Answer: "== checks if two references point to the same memory location, while .equals() checks if the contents of two objects are the same." publicclassStringComparison { publicstatic void main(String[] args) { String str1 = newString("Java"); String str2 = newString("Java"); System.out.println(str1 == str2); // false, because they refer to different objects System.out.println(str1.equals(str2)); // true, because the content is the same } } Q2. Explain the difference between ArrayList and LinkedList in Java. Focus:Java collections framework. What to Expect:

4. Explain the differences between these two List implementations. Discuss when to use each type of list based on performance. Sample Answer: "ArrayList provides fast access by index, while LinkedList offers faster insertions and deletions." import java.util.*; publicclassListExample { publicstaticvoidmain(String[] args) { List arrayList = new ArrayList<>(); List linkedList = new LinkedList<>(); arrayList.add("Java"); linkedList.add("Java"); System.out.println("ArrayList: " + arrayList.get(0)); // Constant time access System.out.println("LinkedList: " + linkedList.get(0)); // Linear time access } } Q3. How does exception handling work in Java? Focus: Java exception handling. What to Expect: Explain how try-catch blocks work. Discuss the use of the finally block. Sample Answer: "Java handles exceptions using try-catch blocks, and the finally block ensures cleanup code runs." publicclassExceptionExample { publicstaticvoidmain(String[] args) { try { int result = 10 / 0; // This will throw ArithmeticException } catch (ArithmeticException e) { System.out.println("Exception: " + e.getMessage()); } finally { System.out.println("This block is always executed."); } } } Q4. What is the purpose of the static keyword in Java?

5. Focus: Static members in Java. What to Expect: Explain how static variables and methods are shared across instances. Sample Answer: "The static keyword makes a variable or method belong to the class itself rather than to instances of the class." publicclassStaticExample { static int count = 0; // Static variable publicStaticExample() { count++; // Increment static variable when an object is created } publicstaticvoidmain(String[] args) { StaticExample obj1 = new StaticExample(); StaticExample obj2 = new StaticExample(); System.out.println("Object count: " + StaticExample.count); // Output: 2 } } Q5. What is the difference between ArrayList and Vector in Java? Focus: Java collection framework. What to Expect: Explain how ArrayList and Vector differ in terms of synchronization and performance. Sample Answer: "ArrayList is not synchronized, making it faster but not thread-safe. Vector is synchronized but slower." import java.util.*; publicclassArrayListVsVector { publicstaticvoidmain(String[] args) { List arrayList = new ArrayList<>(); List vector = new Vector<>(); arrayList.add("Java"); vector.add("Java"); System.out.println("ArrayList: " + arrayList.get(0)); System.out.println("Vector: " + vector.get(0)); } }

6. Q6. What is the difference between final, finally, and finalize in Java? Focus:Java keywords. What to Expect: Explain the distinct purposes of final (for constants and inheritance), finally (for exception handling), and finalize (for garbage collection). Sample Answer: "final is used for constants and inheritance, finally for handling cleanup in exception handling, and finalize is a method used by the garbage collector." publicclassFinalExample { publicstaticvoidmain(String[] args) { final int x = 10; // final variable, cannot be modified try { int result = 10 / 0; } finally { System.out.println("This block is always executed."); } FinalizeExample finalizeExample = new FinalizeExample(); finalizeExample = null; System.gc(); // Calls finalize method } } classFinalizeExample { @Override protectedvoidfinalize() { System.out.println("Finalize called"); } } Q7. What is the difference between method overloading and method overriding in Java? Focus: Polymorphism in Java. What to Expect: Explain how method overloading allows multiple methods with the same name but different parameters while overriding allows a subclass to provide a specific implementation of a method already defined in its superclass. Sample Answer: "Method overloading means multiple methods with the same name but different signatures, while method overriding means redefining a method in a subclass."

7. classParent { void display() { System.out.println("Parent method"); } } classChildextendsParent { @Override void display() { System.out.println("Child method"); } } publicclassOverloadingOverridingExample { publicstatic void main(String[] args) { Parent parent = newChild(); parent.display(); // Calls overridden method in Child class OverloadingOverridingExample example = newOverloadingOverridingExample(); example.display(10); // Calls overloaded method example.display("Java"); // Calls overloaded method } void display(int num) { System.out.println("Overloaded method with int: " + num); } void display(String str) { System.out.println("Overloaded method with String: " + str); } } Read More: Top 50+ Java Interview Questions & Answers Infosys Automation Testing Interview Questions If you’re getting ready for an interview in automation testing at Infosys, be prepared for some important questions that check your knowledge of testing and automation tools. It’s good to know different testing methods and best practices so you can show what you know effectively. Q8. What is Selenium, and how is it used in automation testing?

8. Ans:Selenium is an open-source tool for automating web browsers. It supports multiple programming languages and allows you to create scripts to test web applications. Q9. What are the different types of locators in Selenium? Ans: The commonly used locators in Selenium include ID, Name, XPath, CSS Selector, Class Name, Tag Name, and Link Text. Q10. How does Selenium WebDriver interact with web elements? Ans: Selenium WebDriver interacts with web elements through its methods like findElement, sendKeys, click, getText, and getAttribute. Infosys Python Developer Interview Questions If you’re preparing for an interview as a Python developer at Infosys, you’ll want to get ready for some key questions that assess your understanding of Python and its applications. Knowing the basics, as well as more advanced topics, will help you showcase your skills effectively. Q11. How would you reverse a string in Python? Focus: String manipulation in Python. What to Expect: You will be asked to write code to reverse a string. Sample Answer: "In Python, you can reverse a string using slicing. Here's how you can do it:" defreverse_string(s): return s[::-1] # Test the function input_str = "Python" print(reverse_string(input_str)) # Output: "nohtyP" Q12. How would you find the factorial of a number in Python? Focus: Understanding recursion and iteration. What to Expect: You might be asked to solve a problem using either recursion or iteration. Sample Answer: "To find the factorial of a number, we can use recursion or a loop. Here's a recursive solution." deffactorial(n): if n == 0 or n == 1: return 1

9. else: return n * factorial(n - 1) # Test the function print(factorial(5)) # Output: 120 Q13. How do you check if a number is prime in Python? Focus:Algorithm to check prime numbers. What to Expect: You will be expected to write a function to check whether a number is prime. Sample Answer: "To check if a number is prime, we need to test if it is divisible by any number other than 1 and itself." defis_prime(n): if n <= 1: return False for i in range(2, int(n ** 0.5) + 1): if n % i == 0: return False return True # Test the function print(is_prime(7)) # Output: True print(is_prime(10)) # Output: False Q14. How do you remove duplicates from a list in Python? Focus: Working with lists and sets in Python. What to Expect: You will need to find a way to remove duplicates from a list. Sample Answer: "To remove duplicates from a list, we can convert it to a set (since sets do not allow duplicates) and then convert it back to a list." defremove_duplicates(lst): return list(set(lst)) # Test the function input_list = [1, 2, 2, 3, 4, 4, 5] print(remove_duplicates(input_list)) # Output: [1, 2, 3, 4, 5] Q15. How do you merge two dictionaries in Python? Focus: Working with dictionaries.

10. What to Expect: You will be expected to merge two dictionaries, handling possible key conflicts. Sample Answer: "To merge two dictionaries, you can use the update() method or the new merge operator (|) in Python 3.9 and above." dict1 = {'a': 1, 'b': 2} dict2 = {'b': 3, 'c': 4} # Using update() dict1.update(dict2) print(dict1) # Output: {'a': 1, 'b': 3, 'c': 4} # Using merge operator (Python 3.9+) dict3 = dict1 | dict2 print(dict3) # Output: {'a': 1, 'b': 3, 'c': 4} Q16. How would you sort a list of tuples based on the second element in each tuple? Focus: Sorting and lambda functions in Python. What to Expect: You will be asked to sort tuples in a list by the second element. Sample Answer: "You can use the sorted() function with a custom sorting key. Here’s how you can do it using a lambda function." tuples = [(1, 2), (3, 1), (5, 4), (2, 3)] sorted_tuples = sorted(tuples, key=lambda x: x[1]) print(sorted_tuples) # Output: [(3, 1), (1, 2), (2, 3), (5, 4)] Q17. How do you find the largest element in a list? Focus: Basic list operations in Python. What to Expect: You will be expected to find the largest element in a list. Sample Answer: "You can use the built-in max() function to find the largest element in a list." deffind_largest(lst): return max(lst) # Test the function input_list = [10, 20, 4, 45, 99] print(find_largest(input_list)) # Output: 99

11. Read More: Top 50+ Python Interview Questions & Answers Infosys Angular Developer Interview Questions As you prepare for your interview as an Angular developer at Infosys, it's crucial to be ready for questions that assess your grasp of Angular and web development fundamentals. Understanding the framework's functionalities and best practices will empower you to demonstrate your skills effectively. Q18. What are Angular Directives? Ans: Directives in Angular are special markers on a DOM element that tell Angular to perform a specific action or behavior. Examples include ngFor, ngIf, and custom directives created by developers. Q19. What is two-way data binding in Angular? Ans: Two-way data binding in Angular allows data to be synchronized between the model and the view. In Angular, it is achieved using the [(ngModel)] syntax. Q20. What is the purpose of Angular’s dependency injection? Ans: Dependency injection in Angular provides a way to supply dependencies, like services, into components or other services. This reduces coupling and increases modularity. Read More: Top 50+ Angular Interview Questions & Answers Infosys React Developer Interview Questions While preparing for your interview as a React developer at Infosys, it's vital to expect questions that will evaluate your knowledge of React and web development principles. Learning about the library's important features and best practices will help you effectively showcase your skills. Q21. What is the purpose of using a key prop in React? Ans: Keys help React identify which items have changed, been added, or removed. They should be unique to ensure efficient updating of the UI. Q22. Explain the concept of state in React. Ans: A state is an object in React that holds dynamic values for a component. When the state changes, React automatically updates the component. Q23. What are React Hooks, and why are they used?

12. Ans: React Hooks are functions that let you use state and other React features without writing a class. They simplify component logic and increase code reusability. Read More: Top 50+ React Interview Questions & Answers Infosys Mainframe Developer Interview Questions When preparing for an interview as a Mainframe developer at Infosys, it's essential to be ready for questions that assess your understanding of mainframe technology and programming concepts. Grasping the fundamental principles and best practices in mainframe development will allow you to showcase your skills effectively. Q24. What is COBOL and its basic structure? Ans:COBOL (Common Business-Oriented Language) is a high-level programming language used for business and finance applications. Its basic structure includes divisions like Identification, Environment, Data, and Procedure. Q25. What is JCL in a mainframe? Ans:JCL (Job Control Language) is used to communicate with the mainframe operating system to execute batch jobs. Q26. Explain the purpose of VSAM in a mainframe environment. Ans:VSAM (Virtual Storage Access Method) is used to organize and access files on the mainframe. It supports key-sequenced, entry-sequenced, and relative record datasets. Infosys Manager Round Interview Questions During the managerial round, interviewers often focus on your leadership skills, decision-making abilities, and how well you handle challenges. Here, you’ll need to demonstrate your experience and strategic thinking. Q27. How do you prioritize tasks when working under pressure? Ans: When under pressure, it's essential to evaluate the urgency and importance of each task. You can create a priority list and focus on tasks that have the most significant impact on project deadlines. Q28. Describe a situation where you resolved a team conflict. Ans: When faced with a conflict, I first listen to both sides to understand the issue. Then, I look for common ground and facilitate a solution that works for everyone.

13. Q29. How do you ensure that your team meets deadlines? Ans: When managing a team, I set clear goals and timelines. I regularly check in on progress and provide support where needed, ensuring that everyone is on track to meet their deadlines. Infosys HR Round Interview Questions The HR round typically focuses on your fit within the company culture, your career goals, and how well you align with Infosys's values. Here are some common HR questions you may encounter: Q30. Why do you want to work for Infosys? Ans: I am impressed by Infosys's commitment to innovation and its strong emphasis on employee development. I believe this aligns with my career aspirations and values. Q31. Where do you see yourself in five years? Ans: In five years, I see myself growing within Infosys, taking on more responsibilities, and potentially leading projects that contribute to the company’s success. Q32. How do you handle failure? Ans: I view failure as a learning opportunity. When I encounter setbacks, I analyze what went wrong, adjust my approach, and apply the lessons learned to future projects. If you want to be confident about the HR round, you can go through these Most Commonly Asked HR Interview Questions and Answers. Now, let’s get into the specific interview questions for different roles and experiences at Infosys. Role-Specific Interview Questions As you get ready for your interview, it’s important to expect questions that focus on the job you’re applying for. These questions will look at your skills, experiences, and how you deal with challenges. Knowing the main tasks and expectations of the role will help you show your strengths and how you can contribute to the team. Infosys SAP Basis Interview Questions Q33. What is SAP Basis, and what are its main responsibilities? Ans: SAP Basis serves as the foundation for the SAP landscape. It covers user administration, system monitoring, troubleshooting, and performance tuning. The primary responsibilities include system management, installation, and maintenance of SAP environments. Q34. How does client administration work in SAP Basis?

14. Ans: Client administration in SAP allows for user data management and separation of business data. It helps create different clients within the same SAP system, supporting separate environments for development, testing, and production. Q35. What is Transport Management in SAP Basis? Ans: The Transport Management System (TMS) in SAP Basis is used to transfer development objects from one SAP environment to another. It enables the seamless movement of configurations, enhancements, and customizations across the SAP landscape. Infosys BPM Interview Questions Q36. What is Business Process Management (BPM), and why is it crucial for organizations? Ans: Business Process Management (BPM) focuses on designing, analyzing, and optimizing an organization's processes. It aims to increase efficiency, reduce costs, and improve customer satisfaction by managing end-to- end workflows. Q37. Can you explain the BPM lifecycle? Ans: The BPM lifecycle includes modeling, execution, monitoring, and optimization. These stages help streamline business processes from conception to continuous improvement, enabling organizations to achieve scalability and flexibility in operations. Q38. How does BPM software benefit organizations? Ans: BPM software helps organizations automate their processes, provide better visibility into workflows, enhance collaboration among teams, and support continuous improvement initiatives. Additional Technical Areas Interview Questions Infosys Dotnet Interview Questions Q39. What is the .NET Framework, and what are its main components? Ans: The .NET Framework is a software development platform developed by Microsoft. It provides a large class library called the Framework Class Library (FCL) and supports multiple programming languages, primarily C# and VB.NET. Q40. Explain the concept of the Common Language Runtime (CLR).

15. Ans: The Common Language Runtime (CLR) is the virtual machine component of the .NET Framework. It manages the execution of .NET programs, providing services such as memory management, exception handling, and security. Q41. What are the differences between a Class and a Struct in C#? Ans: In C#, a Class is a reference type, whereas a Struct is a value type. Classes support inheritance, while structs do not. Additionally, classes can be null, whereas structs cannot. Read More: Top 50 .NET Interview Questions and Answers  Infosys Android Developer Interview Questions Q42. What is the Android Activity Lifecycle? Ans: The Android Activity Lifecycle consists of several states, including Created, Started, Resumed, Paused, Stopped, and Destroyed. Understanding this lifecycle is crucial for managing resources and handling user interactions effectively. Q43. Explain the difference between an implicit intent and an explicit intent. Ans: An explicit intent is used to start a specific component (e.g., an activity) by name, while an implicit intent is used to request an action from any app component that can handle it based on the action, data, or category- specified. Q44. What are Content Providers in Android? Ans: Content Providers are a component of Android that manages access to a structured set of data. They allow data sharing between applications and provide a standard interface for querying and manipulating data. Infosys Power Programmer Interview Questions Q45. What is the role of a Power Programmer in a project? Ans: A Power Programmer is responsible for handling complex coding tasks, optimizing existing code, and ensuring best practices in software development. They also mentor junior developers and assist in architectural decisions. Q46. How do you ensure code quality and maintainability? Ans: Code quality and maintainability can be ensured through practices like code reviews, writing unit tests, adhering to coding standards, and utilizing design patterns effectively.

16. Q47. Explain the significance of version control in software development. Ans: Version control is essential for managing changes to code over time. It allows multiple developers to collaborate efficiently, track changes, and revert to previous versions if necessary, ensuring better code integrity and project management. Tips for Acing the Infosys Interview Research: Understand Infosys’s values, culture, and recent developments in the industry. Practice: Conduct mock interviews and practice common interview questions. Dress Professionally: Your appearance matters, so dress appropriately for the interview. Be Confident: Maintain eye contact, speak clearly, and show enthusiasm about the opportunity. Follow-up: After the interview, send a thank-you email to express your appreciation for the opportunity. Summary Getting ready for an interview with Infosys means understanding the specific requirements of the position you’re applying for, whether it’s technical, project management, or any other role. Practicing common interview questions, showing strong problem-solving skills, and highlighting your ability to work well in teams can significantly boost your chances of success. With careful preparation and confidence, you can present yourself as a strong candidate to Infosys’s hiring team.