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Infosys System Engineer Interview Questions and Answers for Freshers
129 Interview questions
A for loop iterates through an array to print each element sequentially.
Use a for loop syntax: for (initialization; condition; increment) { }
Example: for (int i = 0; i < array.length; i++) { System.out.println(array[i]); }
In JavaScript: for (let i = 0; i < array.length; i++) { console.log(array[i]); }
In Python: for element in array: print(element)
C is a high-level programming language known for its efficiency and control over system resources.
Developed in the early 1970s at Bell Labs.
Used for system programming, embedded systems, and application development.
Supports procedural programming and low-level memory manipulation.
Example: Writing operating systems like UNIX.
C is the foundation for many modern languages like C++, C#, and Java.
Java is a high-level, object-oriented programming language designed for portability and ease of use across platforms.
Developed by Sun Microsystems in 1995, now owned by Oracle.
Java is platform-independent due to the Java Virtual Machine (JVM).
It follows the principle of 'Write Once, Run Anywhere' (WORA).
Commonly used for web applications, mobile apps (Android), and enterprise software.
Example: Java is used in popu...
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 di...
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...
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 from an existing class, inheriting attributes and methods (e.g., a 'Dog' class inheriting from an 'Animal' class).
Polymorphism: Ability to present the same interfac...
Infosys HR Interview Questions
Encapsulation is a fundamental concept in OOP that restricts direct access to an object's data and methods.
Encapsulation combines data and methods that operate on that data into a single unit called a class.
It restricts access to certain components, which is achieved using access modifiers like private, protected, and public.
For example, a class 'Car' can have private attributes like 'speed' and 'fuelLevel', and p...
Java encapsulation is a fundamental OOP concept that restricts direct access to class members, promoting data hiding.
Encapsulation is achieved using access modifiers: private, protected, and public.
Private variables can only be accessed within the same class.
Public methods allow controlled access to private variables.
Example: A class 'Person' with private 'age' variable and public 'getAge()' method.
Encapsulation e...
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., u...
The four pillars of OOP are encapsulation, inheritance, polymorphism, and abstraction.
Encapsulation: Bundling data and methods that operate on the data into a single unit. Example: Class in Java.
Inheritance: Ability of a class to inherit properties and behavior from another class. Example: Subclass extending a superclass.
Polymorphism: Ability to present the same interface for different data types. Example: Method ...
Infosys System Engineer Interview Experiences for Freshers
236 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
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 applied via Campus Placement and was interviewed in Dec 2024. There were 2 interview rounds.
Aptitude test consists of topics like percentages ,profits and loss like this they covered all the topics there is verbal ability also
(2 Questions)
- Q1. Explain four pillars of oops
- Q2. About projects
Interview Preparation Tips
- Dsa
- Dbms
Selected
I appeared for an interview before Jul 2024, where I was asked the following questions.
- Q1. What is global and local variable?
- Q2. Write for loop to print elements
- Ans.
A for loop iterates through an array to print each element sequentially.
Use a for loop syntax: for (initialization; condition; increment) { }
Example: for (int i = 0; i < array.length; i++) { System.out.println(array[i]); }
In JavaScript: for (let i = 0; i < array.length; i++) { console.log(array[i]); }
In Python: for element in array: print(element)
- Q3. What is class and method
Interview Preparation Tips
Selected
I applied via Campus Placement and was interviewed in Oct 2024. There were 3 interview rounds.
Covers all aptitude topics
(2 Questions)
- Q1. Self introduction,why infosys
- Q2. Projects mini and major
(2 Questions)
- Q1. Simple java programs
- Q2. Sql queries,java programs
Selected
I applied via Campus Placement and was interviewed in Sep 2024. There were 2 interview rounds.
The round 1 was an online assessment that was held in campus labs. It was a 2 hour long test having 7 sections that are reasoning ability,verbal ability,comprehension,pseudocode,puzzle solving,essay writing,quants. There was a sectional cutoff around 70%
(2 Questions)
- Q1. Introduce yourself?
- Q2. React.js basics' questions and nextjs questions
Interview Preparation Tips
Checkout for past year interview experience as well.
Selected
I appeared for an interview in May 2025, where I was asked the following questions.
- Q1. What are the concepts of Object-Oriented Programming (OOP)?
- 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 from an existing class, inheriting attributes and methods (e.g., a 'Dog' class inheriting from an 'Animal' class).
Polymorphism: Ability to present the same interface for...
- Q2. What is encapsulation in the context of object-oriented programming?
- Ans.
Encapsulation is a fundamental concept in OOP that restricts direct access to an object's data and methods.
Encapsulation combines data and methods that operate on that data into a single unit called a class.
It restricts access to certain components, which is achieved using access modifiers like private, protected, and public.
For example, a class 'Car' can have private attributes like 'speed' and 'fuelLevel', and public...
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...
Manju M
I appeared for an interview in Apr 2025, where I was asked the following questions.
- Q1. What is polymorphism
- Q2. What is cloud computing
- Q3. Tell about your projects
- Q4. What is cloud computing?
Selected
I appeared for an interview in Feb 2025.
Self introduction, academics, project in engineering,
Exams on SAP and training related to it.
Interview Preparation Tips
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