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Infosys System Engineer Interview Questions and Answers
461 Interview questions
Code for sorting an array of strings
Use a sorting algorithm like bubble sort, selection sort, or quicksort
Compare strings using strcmp() function in C or compareTo() method in Java
Ensure the sorting algorithm is efficient and handles edge cases like empty array or duplicate strings
Data types in C language define the type of data that a variable can store.
Basic data types include int, float, char, double, etc.
Derived data types include arrays, pointers, structures, unions, etc.
Example: int num = 10; char letter = 'A'; float value = 3.14;
Designed and implemented a real-time monitoring system for network traffic analysis
Developed a web-based dashboard to display real-time network traffic data
Utilized machine learning algorithms to detect anomalies in network traffic
Implemented alerts for abnormal network behavior to notify system administrators
Used Python for data processing and visualization
The OSI model is a conceptual framework that standardizes the functions of a telecommunication or computing system into seven layers.
The OSI model stands for Open Systems Interconnection model.
It divides network communication into seven layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application.
Each layer has specific functions and interacts with adjacent layers for data transmission.
F...
A friend function is a function that is not a member of a class but has access to the private and protected members of the class.
Friend functions are declared inside a class with the keyword 'friend'.
They can access private and protected members of the class.
Friend functions are not member functions of the class.
They are often used to allow external functions or classes to access private members of a class.
A constructor is a special type of method in a class that is automatically called when an object of that class is created.
Constructors have the same name as the class they belong to
They do not have a return type
They can be used to initialize object properties
This code generates a star pattern using nested loops in Python.
Use nested loops: Outer loop for rows, inner loop for columns.
Control the number of stars printed based on the current row.
Example: For a 5-row pyramid, print 1 star in the first row, 2 in the second, and so on.
Use print statements to format the output correctly.
The Fibonacci series is a sequence where each number is the sum of the two preceding ones, starting from 0 and 1.
The Fibonacci series starts with 0 and 1.
The next number is found by adding up the two numbers before it.
Example: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34...
Commonly used in algorithms, mathematics, and nature.
Inheritance is a concept in object-oriented programming where a class can inherit attributes and methods from another class.
Allows for code reusability and promotes the concept of hierarchy
Derived class can access the properties and methods of the base class
Types of inheritance include single, multiple, multilevel, hierarchical, and hybrid
Example: Class 'Car' can inherit from class 'Vehicle' to access common attri...
Java HashMaps are data structures that store key-value pairs and allow for fast retrieval of values based on keys.
HashMaps are part of the Java Collections Framework.
They do not allow duplicate keys, but allow duplicate values.
Values can be retrieved quickly using the key.
Example: HashMap<String, Integer> map = new HashMap<>();
Example: map.put("John", 25);
Infosys System Engineer Interview Experiences
1.2k interviews found
Anonymous
Selected
I appeared for an interview in Jan 2025.
The exam consists of seven sections, and the cutoff score is quite high; it is essential to complete the exam thoroughly.
(5 Questions)
- Q1. Can you tell me about yourself?
- Q2. Can you provide details about your internship experience?
- Ans.
I completed a 6-month internship at a tech company, where I worked on network infrastructure projects.
Assisted in setting up and configuring network devices such as routers and switches
Troubleshooted network issues and implemented solutions
Collaborated with team members on various IT projects
Participated in meetings with clients to discuss project requirements
- Q3. Given a puzzle to solve
- Q4. What can you tell me about your major projects?
- Ans.
I have worked on various major projects including designing and implementing network infrastructure, developing automation scripts, and optimizing system performance.
Designed and implemented a new network infrastructure for a large company, improving network speed and reliability
Developed automation scripts to streamline system monitoring and maintenance tasks, saving time and reducing errors
Optimized system performanc...
- Q5. What is the latest news you have heard regarding technology?
- Ans.
The latest news I heard regarding technology is the release of the new iPhone 13 with improved camera features.
Apple recently announced the release of the iPhone 13 series with upgraded camera capabilities.
The new iPhone 13 models come with improved low-light performance and cinematic mode for videos.
Apple also introduced the A15 Bionic chip for enhanced performance and battery life.
Interview Preparation Tips
Selected
There were a total of seven sections: verbal ability, logical reasoning, arithmetic problems, verbal reasoning, puzzles, pseudocodes, and essay writing, with each section having its own cutoff scores.
(5 Questions)
- Q1. What is the SQL query to retrieve the person with the highest salary?
- Ans.
Use SQL query with MAX function to retrieve person with highest salary.
Use SELECT statement to retrieve data
Use MAX function to find the highest salary
Use WHERE clause to filter out the person with highest salary
- Q2. Can you describe the projects you have worked on?
- Ans.
I have worked on projects involving network infrastructure upgrades, cloud migration, and cybersecurity enhancements.
Upgraded network infrastructure to improve performance and reliability
Migrated on-premise systems to the cloud for increased scalability and cost savings
Implemented cybersecurity measures such as firewalls and intrusion detection systems
Developed disaster recovery plans to ensure business continuity in c...
- Q3. Write a query to merge 2 tables?
- Ans.
Merge 2 tables using SQL query
Use the JOIN keyword to combine rows from both tables based on a related column
Specify the columns to be selected from each table
Use different types of joins like INNER JOIN, LEFT JOIN, RIGHT JOIN, or FULL JOIN based on the requirement
- Q4. Tell me about the internship that you have done?
- Ans.
I completed a system engineering internship at XYZ Company, where I worked on designing and implementing network infrastructure.
Worked on configuring routers and switches
Assisted in troubleshooting network issues
Collaborated with team members on project planning and execution
- Q5. Behavioural questions
I applied via Campus Placement and was interviewed in Nov 2024. There were 2 interview rounds.
Its very easy
Basic maths questions learned up to 10
Basic Apptitude questions
(5 Questions)
- Q1. Tell me about your self Hi My name is Vikram Adithya I am an hard working and passionate engineering student currently perceiveing in gokaraju rangaraju institute of engineering and technology .I stay with...
- Q2. Intervier asked about what kind of problems did you solved in leetcode? I said palindrome factorial matrix multiplication etc . Intervier said every one can solve this
- Q3. He asked me about my project role i said I have done documentation in my project he said every one can do that
- Q4. He asked me to write project code
- Q5. He asked me any questions
Interview Preparation Tips
If you crack it it is easy to get hired in infosys.
Selected
I appeared for an interview in May 2025, where I was asked the following questions.
- Q1. What are the fundamental concepts of coding?
- Ans.
Fundamental coding concepts include syntax, data structures, algorithms, and debugging, essential for effective programming.
Syntax: The set of rules that defines the combinations of symbols that are considered to be correctly structured programs. Example: In Python, indentation is crucial.
Data Structures: Ways to organize and store data for efficient access and modification. Example: Arrays, linked lists, and hash tabl...
- Q2. What are the details of Object-Oriented Programming (OOP) concepts?
- Ans.
OOP is a programming paradigm based on objects, encapsulating data and behavior for modular and reusable code.
Encapsulation: Bundling data and methods that operate on the data within one unit (e.g., a class).
Inheritance: Mechanism to create a new class using properties and methods of an existing class (e.g., a 'Dog' class inheriting from an 'Animal' class).
Polymorphism: Ability to present the same interface for differe...
Selected
I applied via Campus Placement and was interviewed in Oct 2024. There were 2 interview rounds.
Duration was 1.5 hrs. Questions were asked on topics like aptitude, reasoning , puzzle solving and verbal ability. Also a topic was given on which candidates were expected to write an essay. Overall the difficulty level was easy to medium.
(8 Questions)
- Q1. Introduce Yourself
- Q2. Explain about your projects (mentioned in resume)
- Q3. Have you got any certifications on cloud technologies?
- Ans.
Yes, I have certifications in AWS and Azure cloud technologies.
Certified AWS Solutions Architect
Microsoft Certified: Azure Administrator Associate
Completed training courses on Google Cloud Platform
- Q4. What do you do in your free time?
- Q5. Explain about Encapsulation (OOPS concept)
- Ans.
Encapsulation is the concept of bundling data and methods that operate on the data into a single unit, known as a class.
Encapsulation helps in hiding the internal state of an object and restricting access to it.
It allows for data hiding, which prevents outside code from directly accessing an object's internal state.
Access to the data is typically controlled through public methods (getters and setters) defined in the cl...
- Q6. Tell about your previous intern/work experience if any
- Q7. What is the one thing that you can say about you for which haven't been noticed by others and credited?
- Q8. Questions about schooling, CGPA in college
Interview Preparation Tips
Skills evaluated in this interview
Selected
I appeared for an interview in Feb 2025.
(2 Questions)
- Q1. What are sorting algorithms, and can you explain their various types and uses?
- Ans.
Sorting algorithms arrange data in a specific order, crucial for efficient data processing and retrieval.
Types of sorting algorithms include: Bubble Sort, Quick Sort, Merge Sort, and Heap Sort.
Bubble Sort is simple but inefficient for large datasets; it repeatedly steps through the list.
Quick Sort is efficient for large datasets, using a divide-and-conquer approach to sort elements.
Merge Sort divides the array into hal...
- Q2. What is the Software Development Lifecycle (SDLC)?
- Ans.
The Software Development Lifecycle (SDLC) is a structured process for developing software applications through various stages.
1. Requirements Gathering: Identify user needs and system requirements.
2. Design: Create architecture and design specifications for the software.
3. Implementation: Write and compile the code based on design documents.
4. Testing: Validate the software through various testing methods (e.g., unit t...
Interview Preparation Tips
Selected
I appeared for an interview in Feb 2025.
Questions regarding aptitude, pseudocode, and communication skills.
(2 Questions)
- Q1. Tell me about yourself.
- Q2. What was your involvement in your college project?
- Ans.
I was the team leader for our college project on developing a smart home automation system.
Led a team of 5 members in designing and implementing the system
Responsible for project planning, delegating tasks, and ensuring deadlines were met
Implemented features such as voice-controlled lights, temperature control, and security cameras
Presented the project at a college exhibition and received positive feedback
Collaborated ...
Selected
It is very easy, questions on all topics are covered.
(2 Questions)
- Q1. What is abstraction and encapsulation?
- Ans.
Abstraction is hiding unnecessary details while encapsulation is bundling data and methods together.
Abstraction focuses on showing only essential features of an object while hiding unnecessary details.
Encapsulation involves bundling the data (attributes) and methods (functions) that operate on the data into a single unit.
Abstraction allows for easier understanding and management of complex systems.
Encapsulation helps i...
- Q2. Write a sql query to update a record
- Ans.
SQL query to update a record in a database table
Use the UPDATE statement followed by the table name
Set the column(s) to be updated using SET keyword
Specify the new values for the column(s) to be updated
Use WHERE clause to specify the condition for which record to update
(2 Questions)
- Q1. Will you able to relocate?
- Ans.
Yes, I am willing to relocate for the right opportunity.
I am open to relocating for the right job opportunity
I have relocated for previous positions and am comfortable with the process
I understand the importance of being flexible and adaptable in the field of engineering
- Q2. Why Infosys?
- Ans.
Infosys is a global leader in technology services and consulting, known for its innovative solutions and commitment to excellence.
Infosys has a strong reputation for delivering high-quality technology solutions to clients worldwide.
The company offers a wide range of opportunities for professional growth and development.
Infosys has a culture of innovation and collaboration, which aligns with my own values and career goa...
Selected
I applied via Campus Placement and was interviewed in Oct 2024. There were 2 interview rounds.
General Aptitude , Grammar MCQ and Essay Writing
(5 Questions)
- Q1. Tell me about yourself?
- Q2. Which Language are you Familiar ?
- Q3. Basic Questions from oops and dbms
- Q4. Why did you choose Infosys ?
- Q5. Questions from my project
Interview Preparation Tips
I applied via Campus Placement
................................................................................
(2 Questions)
- Q1. What questions were asked regarding the projects you have completed?
- Ans.
Questions about projects completed in previous roles.
Asked to describe specific projects worked on
Inquired about the technologies used in the projects
Asked about the challenges faced and how they were overcome
Asked about the impact of the projects on the organization
Inquired about the team collaboration and communication during the projects
- Q2. What technologies were used in your project?
- Ans.
The project utilized a variety of technologies including cloud computing, virtualization, automation tools, and network protocols.
Cloud computing (e.g. AWS, Azure)
Virtualization (e.g. VMware, Hyper-V)
Automation tools (e.g. Ansible, Puppet)
Network protocols (e.g. TCP/IP, DNS)
(2 Questions)
- Q1. What are the principles of software engineering?
- Ans.
Principles of software engineering are guidelines that help in the development of high-quality software.
Requirements gathering and analysis
Design
Implementation
Testing
Maintenance
Documentation
Quality assurance
Version control
Continuous integration
Agile development
- Q2. Subqueries, views, joins in SQL
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