Infosys Interview Questions 2025 | Infosys 2025 Technical Interview Questions For Freshers

Infosys Interview Questions 2025 | Infosys 2025 Technical Interview Questions For Freshers: Infosys is a renowned multinational IT services company, and its interview process typically evaluates candidates on technical knowledge, problem-solving skills, and cultural fit. Below are some common Infosys interview questions and sample answers:

This article offers an exhaustive list of Infosys Interview Questions for Freshers and Experienced Candidates for 2025. In the following parts, we have updated the Infosys Technical Questions and Infosys HR Interview Questions. Candidates who want to participate in the Infosys Interview round should thus thoroughly study this whole article.

Infosys Interview Questions 2025 – Complete Overview

Infosys Technical Interview Question & Answers 2025

Here are some common technical interview questions you might encounter during an Infosys interview, along with sample answers:

Data Structures and Algorithms:

Question: Explain the concept of a linked list and its types.

Answer: A linked list is a data structure where each element (node) points to the next one. Types include singly linked lists and doubly linked lists.

Programming Languages:

Question: Differentiate between Java and C++.

Answer: Java is an object-oriented language with a focus on platform independence, while C++ is a versatile language with low-level memory control.

Databases:

Question: What is normalization in databases?

Answer: Normalization is the process of organizing data in a database to minimize redundancy and dependency.

Operating Systems:

Question: Explain the concept of multitasking in an operating system.

Answer: Multitasking allows a computer to run multiple tasks concurrently, efficiently sharing resources.

Software Development:

Question: What is the software development life cycle (SDLC)?

Answer: SDLC is a structured process for planning, creating, testing, deploying, and maintaining software systems.

System Design:

Question: Explain the principles of object-oriented programming (OOP).

Answer: OOP principles include encapsulation, inheritance, and polymorphism, which promote code modularity and reusability.

Web Development:

Question: What is the difference between HTTP and HTTPS?

Answer: HTTPS is a secure version of HTTP that encrypts data transmission, providing enhanced security for online communication.

Testing:

Question: What is unit testing, and why is it important?

Answer: Unit testing involves testing individual components or functions to ensure they work as expected and is crucial for identifying and fixing issues early in the development process.

Networking:

Question: What is an IP address and its types?

Answer: An IP address is a unique identifier for devices on a network. Types include IPv4 and IPv6.

Machine Learning (if relevant to the role)

Question: Explain the concept of overfitting in machine learning.

Answer: Overfitting occurs when a machine learning model learns the training data too well, fitting noise and producing poor results on new data.

Infosys Technical Interview Questions For Freshers 2025

• What is the difference between C and C++
• What is the difference between C and Java
• What is the C language
• Who developed the C language
• What is meant by programming language and give some examples
• What is meant by protocol
• Execution of a C program starts from which function
• What are all the sections that a C program may/must have
• What is IDE
• List out some of the C compilers
• What is a header file in the C language
• Is C language case sensitive
• What is a keyword in C
• What is constant in C
• What are the types of constants in C
• What is the variable in C
• What is the difference between constant and variable in C
• Can variable names start with numbers
• What are the different types of variables in C
• What is the local variable in C
• What is the global variable in C
• What is the environment variable in C
• What is an operator in C
• What are the different types of operators in C
• What is the syntax for the ternary operator in C
• What is an arithmetic operator in C
• What is the assignment operator in C
• What is the relational operator in C
• What is the logical operator in C
• What is bitwise operator in C
• What is a modifier in C
• What are the different types of modifiers in C
• What is void in C
• What will happen if the break statement is not used in the switch case in C
• Why is the default statement used in the switch case in C
• What is a data structure
• Differentiate file structure from the storage structure
• When is a binary search best applied
• What is a linked list
• How do you reference all the elements in a one-dimension array
• In what areas do data structures apply
• What is LIFO
• What is the primary advantage of a linked list
• What is the difference between a PUSH and a POP
• What is a linear search
• How does variable declaration affect memory allocation
• What is the advantage of the heap over a stack
• What is a postfix expression
• What is Data abstraction
• How do you insert a new item in a binary search tree
• How does a selection sort work for an array
• What is a queue
• What are binary trees
• Which data structure is applied when dealing with a recursive function
• What is a stack
• Explain Binary Search Tree
• What are multidimensional arrays
• Are linked lists considered linear or non-linear data structures
• How does dynamic memory allocation help in managing data
• What is FIFO
• What is an ordered list
• What is a dequeue
• What is a bubble sort and how do you perform it
• What are the parts of a linked list
• How does selection sort work
• What is a graph
• What is an AVL tree
• What are doubly linked lists
• What is Huffman’s algorithm
• What is merge sort
• Differentiate NULL and VOID
• How do signed and unsigned numbers affect memory
• What is the minimum number of nodes that a binary tree can have
• What are dynamic data structures
• In what data structures are pointers applied
• Do all declaration statements result in a fixed reservation in memory
• What are ARRAYs
• What is the Fibonacci search
• Briefly explain the recursive algorithm
• How do you search for a target key in a linked list
• What is a class
• What is an object
• What is the difference between an object and a class
• What is the difference between class and structure
• Define object-based programming language.
• Define object-oriented language.
• Define OOPs.
• What is public, protected, and private
• What is a scope resolution operator
• What do you mean by inheritance
• What do you mean by virtual methods
• What do you mean by static methods
• What is an explicit constructor
• What is the Standard Template Library
• What is abstraction
• What is encapsulation
• How variable declaration in c++ differs from that in c
• What are the c++ tokens
• What do you mean by the reference variable in c++
• What do you mean by implicit conversion
• What is the difference between method overloading and method overriding
• What are the defining traits of an object-oriented language
• What is polymorphism
• What do you mean by inline function
• What is the difference between a NULL pointer and a void pointer
• What is the difference between C++ and Java
• What is an incomplete type
• What do you mean by Stack unwinding
• What is a container class What are the types of container classes
• Name some pure object-oriented languages.
• Name the operators that cannot be overloaded.
• What is an adaptor class or Wrapper class
• What is a Null object
• What is class invariant
• What is a dangling pointer
• Define SQL.
• State the difference between Security and Integrity.
• Define Normalisation
• Define Primary Key
• What is a Weak Entity set
• What is a deadlock
• What is log shipping
• What are primary keys and foreign keys
• What is the type of Synonyms
• What is an Integrity Constrains
• What is Table
• What is a synonym
• What is a Database instance
• What are Roles
• What is SQLPlus
• What is a trigger
• What is the UNIQUE KEY constraint
• What is NOT NULL Constraint
• What is meant by query optimization
• What is meant by embedded SQL
• Define Unique Key.
• Compare and contrast TRUNCATE and DELETE for a table.
• What are cursors
• Define Foreign Key.
• Define SubQuery.
• What are the different types of subquery
• What are the different types of replication
• What are User Defined Functions
• Define Self Join
• Define Joins
• What are the types of joins
• Define Equi Joins
• Define Cartesian Join
• What are three SQL keywords used to change or set someone’s permissions
• What are the types of SQL Commands
• What is an attribute
• What are the different types of data models
• What is an active database
• Define Self Join
• What is a tuple
• What is meant by embedded SQL
• What is Functional Dependency
• What are the different phases of a transaction
• What is the difference between UNION and UNION ALL
• What is OLTP
• What is DDL (Data Definition Language)
• What is File Manager
• Define Constraints.
• What are the types of sub-queries?
• What is SQL Profiler

Infosys HR Interview Questions For Freshers 2025

1. Tell me about yourself.

Answer: Provide a brief overview of your education, work experience, key skills, and career goals.

2. What do you know about Infosys?

Answer: Mention Infosys’ global presence, its services, and its reputation for innovation and technology solutions.

3. Why do you want to work at Infosys?

Answer: Highlight Infosys’ excellent work culture, opportunities for growth, and alignment with your career goals.

4. Explain your technical skills and experience.

Answer: Detail your technical skills, relevant projects, and how your skills align with the job you’re applying for.

5. How do you handle challenging situations at work?

Answer: Share an example where you successfully resolved a work-related challenge, emphasizing problem-solving and teamwork.

6. Describe a time when you worked in a team.

Answer: Discuss a collaborative project, your role, and how you contributed to achieving the team’s goals.

7. What is your favorite programming language, and why?

Answer: Choose a language you’re proficient in and explain its strengths and relevance to your work.

8. Explain the Agile development methodology.

Answer: Define Agile and discuss its iterative approach, emphasizing customer collaboration and adaptability.

9. How do you stay updated with the latest technology trends?

Answer: Mention online courses, forums, and tech news sites you follow to stay current in your field.

10. Describe a situation where you handled a difficult client or project requirement.

Answer: Share an experience where you effectively communicated with the client, managed expectations, and delivered a successful outcome.

11. What are your strengths and weaknesses?

Answer: Highlight relevant strengths like adaptability and problem-solving. For weaknesses, discuss how you’re working to improve them.

12. How do you prioritize tasks when working on multiple projects?

Answer: Explain your approach to assessing project urgency, deadlines, and importance to allocate time effectively.

13. Where do you see yourself in five years?

Answer: Mention your desire to continue growing professionally, possibly taking on more significant responsibilities.

14. How do you handle stress and tight deadlines?

Answer: Discuss your time management, organization, and stress management strategies.

15. Can you provide an example of a challenging technical problem you solved?

Answer: Share a specific technical problem, the steps you took to solve it, and the positive outcome.