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Infosys Technology Analyst Interview Questions and Answers
176 Interview questions
TreeMap is a data structure in Java that stores key-value pairs in a sorted order based on the keys.
TreeMap implements the Map interface and uses a Red-Black tree for storage.
It provides efficient operations like insertion, deletion, and retrieval of elements.
Elements are sorted based on the natural ordering of keys or a custom Comparator.
Example: TreeMap<String, Integer> treeMap = new TreeMap<>(); tre...
Array push is a method in JavaScript used to add one or more elements to the end of an array.
Array push is a built-in method in JavaScript.
It adds one or more elements to the end of an array and returns the new length of the array.
Example: let arr = ['apple', 'banana']; arr.push('orange'); // arr is now ['apple', 'banana', 'orange']
Polymorphism is the ability of a function or method to behave differently based on the object it is acting upon.
Polymorphism allows objects of different classes to be treated as objects of a common superclass.
It enables a single interface to represent multiple data types.
Examples include method overloading and method overriding in object-oriented programming.
Include and require are both used to include external files in PHP, but require will cause a fatal error if the file is not found.
Include will only produce a warning if the file is not found, while require will stop the script execution.
Include is used when the file is not critical for the script to run, while require is used when the file is essential.
Example: include 'header.php'; require 'config.php';
You can retrieve input values using alternative methods like querySelector or event listeners in JavaScript.
Use document.querySelector('input[name="inputName"]') to select an input by its name attribute.
Use event listeners to capture input values dynamically, e.g., inputElement.addEventListener('input', function() { console.log(this.value); });
Access form elements directly via the form object, e.g., const value = ...
Use AWS Lambda to automate EC2 provisioning by writing code in Python or Node.js.
Create a Lambda function in AWS console.
Write code in Python or Node.js to describe the EC2 instance to be provisioned.
Use AWS SDK to interact with EC2 API for provisioning.
Handle error cases and cleanup resources after provisioning.
Test the Lambda function to ensure it provisions EC2 instances correctly.
Template for creating CloudFormation stacks
Define the resources to be created in the stack
Specify the properties for each resource
Set up dependencies between resources
Include any parameters or conditions needed for the stack
Use AWS CloudFormation Designer or AWS CLI to create the stack
We are currently working on various technologies including AI, Machine Learning, and Blockchain.
AI: Developing chatbots and virtual assistants for customer service
Machine Learning: Building predictive models for sales forecasting
Blockchain: Exploring use cases for supply chain management
Agile was followed in the project by implementing iterative development, continuous feedback, and collaboration.
The project used Scrum framework for agile implementation.
Sprints were planned and executed to deliver incremental value.
Daily stand-up meetings were held to discuss progress and address any issues.
Backlog grooming sessions were conducted to prioritize and refine user stories.
Continuous integration and a...
Developed a mobile app, implemented a data analytics system, and led a successful software upgrade.
Developed a mobile app that increased user engagement by 30%.
Implemented a data analytics system that improved decision-making process and reduced costs by 20%.
Led a successful software upgrade project, ensuring minimal downtime and improved system performance.
Infosys Technology Analyst Interview Experiences
286 interviews found
Anonymous
Selected
(1 Question)
- Q1. This is not good company they are firing with out information for employee even families also maintain they will not remove but fine one morthing employees not supporting to other colleges also so i just t...
(2 Questions)
- Q1. Its a good companies
- Q2. It's a good company
(1 Question)
- Q1. Its a good decision
Interview Preparation Tips
Zibreel Siddiqui
Selected
(2 Questions)
- Q1. What is boxing and unboxing
- Ans.
Boxing is the process of converting a value type to a reference type, while unboxing is the process of converting a reference type to a value type.
Boxing is done implicitly by the compiler when a value type is assigned to a reference type variable.
Unboxing requires an explicit cast from the reference type to the value type.
Boxing and unboxing can impact performance as they involve memory allocation and copying of data.
...
- Q2. What is garbage collection
- Ans.
Garbage collection is a process in programming where the system automatically reclaims memory occupied by objects that are no longer in use.
Garbage collection helps prevent memory leaks by automatically freeing up memory that is no longer needed.
It is commonly used in languages like Java, C#, and Python.
Garbage collection can be either automatic or manual, with automatic being the most common approach.
Examples of garba...
(2 Questions)
- Q1. What is mvc and razor
- Ans.
MVC stands for Model-View-Controller, a software architectural pattern. Razor is a markup syntax used in ASP.NET MVC.
MVC is a design pattern that separates an application into three main components: Model, View, and Controller
Razor is a markup syntax used in ASP.NET MVC to create dynamic web pages
MVC helps in organizing code and separating concerns, making it easier to maintain and test applications
- Q2. What is software development
- Ans.
Software development is the process of creating, designing, testing, and maintaining software applications.
Involves writing code to create software applications
Includes designing the user interface and user experience
Testing the software for bugs and errors
Maintaining and updating the software as needed
Selected
(2 Questions)
- Q1. What are the differences between ListView and RecyclerView in Android development?
- Ans.
ListView is a legacy view for displaying lists in Android, while RecyclerView is a more flexible and efficient replacement.
ListView is less efficient in terms of memory and performance compared to RecyclerView.
RecyclerView provides better performance by recycling views and separating the responsibilities of layout and data management.
RecyclerView supports more advanced features like animations and item decorations.
List...
- Q2. What are services and the work manager in the context of software development?
- Ans.
Services and work manager are components in software development that help manage background tasks and processes.
Services are components that run in the background to perform long-running operations without affecting the user interface.
Work manager is a library that helps manage background tasks efficiently, taking into account factors like battery life and network availability.
Services can be used for tasks like downl...
Selected
I applied via Job Portal
(1 Question)
- Q1. What is the method to combine multiple lists into a single list?
- Ans.
Use the extend() method in Python to combine multiple lists into a single list.
Use the extend() method to add elements from one list to another list.
Alternatively, you can use the + operator to concatenate lists.
Example: list1 = [1, 2, 3], list2 = [4, 5, 6], combined_list = list1 + list2
Selected
I applied via Naukri.com and was interviewed in Nov 2024. There were 2 interview rounds.
(2 Questions)
- Q1. OOPS, DI, Diff between Read-only and const
- Q2. Types of classes
- Ans.
Types of classes include abstract classes, concrete classes, interface classes, and inner classes.
Abstract classes cannot be instantiated and may contain abstract methods.
Concrete classes can be instantiated and provide implementations for all methods.
Interface classes define a contract for classes to implement.
Inner classes are classes defined within another class.
(2 Questions)
- Q1. Strength and weakness
- Q2. How do you handle difficult situations within a team?
- Ans.
I address difficult situations within a team by promoting open communication, seeking to understand all perspectives, and collaborating on solutions.
Promote open communication to address issues early on
Seek to understand all perspectives before making decisions
Collaborate with team members to find mutually beneficial solutions
- Q1. What are the high-level steps involved in cloning Oracle E-Business Suite R12.2? How can you change the application password in R12.2? If a tablespace reaches its space threshold, what steps can be taken t...
- Ans.
Cloning Oracle E-Business Suite R12.2 involves several key steps for replication and maintenance.
1. Prepare the source instance by ensuring it is in a stable state.
2. Create a backup of the source database and application files.
3. Use the Rapid Clone utility to clone the instance.
4. Update the configuration files for the new instance.
5. Run post-cloning scripts to finalize the setup.
6. Verify the cloned instance by per...
- Q2. If a tablespace reaches its space threshold, what steps can be taken to resolve the issue? Could you explain the various phases of the Application Development Operations (ADOP)? What actions should be take...
- Ans.
Steps to resolve tablespace issues and phases of ADOP in application development.
Monitor tablespace usage regularly to anticipate issues before they arise.
Increase the size of the tablespace by adding data files.
Archive or purge old data to free up space.
Implement partitioning to manage large tables more effectively.
Review and optimize database queries to reduce space consumption.
In ADOP, phases include: Prepare, Apply...
Manas Srivastava
I applied via Referral and was interviewed in Oct 2024. There were 2 interview rounds.
(2 Questions)
- Q1. JavaScript basics
- Q2. Angular authorization, RXJS, Interceptors
(1 Question)
- Q1. What are your expectations
- Ans.
I expect a challenging role that fosters growth, collaboration, and innovation in technology analysis.
Opportunities for professional development, such as training programs or workshops.
A collaborative work environment where team members share ideas and insights.
Involvement in innovative projects that push the boundaries of technology.
Clear communication from leadership regarding company goals and expectations.
A culture...
Selected
I applied via Naukri.com and was interviewed in Sep 2024. There was 1 interview round.
(3 Questions)
- Q1. Java 8 features
- Q2. Microservices framework
- Q3. OOPs concepts & multi threading
Interview Preparation Tips
sriram K
(2 Questions)
- Q1. Explain about kersal server?
- Ans.
Kersal server is a type of server used for hosting websites and applications.
Kersal server is known for its reliability and performance.
It is often used by businesses to host their websites and applications.
Kersal server offers features like high uptime, security, and scalability.
Examples of Kersal server providers include AWS, Google Cloud, and Microsoft Azure.
- Q2. What is dependency injection?
- Ans.
Dependency injection is a design pattern in which components are given their dependencies rather than creating them internally.
Dependency injection helps in achieving loose coupling between classes.
It allows for easier testing and maintenance of code.
There are three types of dependency injection: constructor injection, setter injection, and interface injection.
(2 Questions)
- Q1. What architecture are you using in your project?
- Ans.
We are using a microservices architecture in our project.
Decomposes the application into smaller, independent services
Each service is responsible for a specific function
Allows for scalability and flexibility
Example: Netflix, Amazon, Uber
- Q2. Acceptance criteria
Skills evaluated in this interview
shailaja ranga
(2 Questions)
- Q1. Difference between overloading and overriding?
- Ans.
Overloading is having multiple methods in the same class with the same name but different parameters. Overriding is having a method in a subclass with the same name and parameters as a method in the superclass.
Overloading involves multiple methods with the same name but different parameters.
Overriding involves a method in a subclass with the same name and parameters as a method in the superclass.
Overloading is resolved...
- Q2. How to implement MVC architecure?
- Ans.
MVC architecture is implemented by separating the application into Model, View, and Controller components.
Create models to represent data and business logic
Develop views to display the user interface
Write controllers to handle user input and update the model
Interview Preparation Tips
Skills evaluated in this interview
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