30+ Infosys Interview Questions and Answers

A timestamp converter that converts timestamp to date and time.

• Use a programming language that supports date and time functions.

• Convert the timestamp to a date and time format using the appropriate function.

• Handle time zone differences if necessary.

• Consider the output format required.

Design a booking system for electric power stations with specific criteria

• Allow users to book time slots for charging their electric vehicles

• Include features for users to check availability, make reservations, and cancel bookings

• Implement a payment system for charging services

• Provide notifications for booking confirmations and reminders

• Allow for user accounts to track booking history and preferences

Design a movie ticket booking system with specific recommendations

• Implement user authentication for secure booking

• Include seat selection feature with real-time updates

• Integrate payment gateway for seamless transactions

• Provide booking history and ticket cancellation options

• Recommend implementing a rating system for movies and theaters

Functional interfaces in Java are interfaces with a single abstract method, used for lambda expressions and method references.

• Functional interfaces can be found in the java.util.function package.

• Examples of functional interfaces include Consumer, Supplier, Predicate, and Function.

• Functional interfaces can be identified by the @FunctionalInterface annotation.

VPN is a secure connection between two or more devices over the internet.

• VPN encrypts data to ensure privacy and security

• It allows remote access to a private network

• It can be used to bypass geo-restrictions and access blocked content

• Examples include OpenVPN, Cisco AnyConnect, and NordVPN

Design a parking lot

• Determine the size and capacity of the parking lot

• Decide on the layout and number of parking spaces

• Implement a system for managing parking spots and payments

• Consider adding features such as security cameras and lighting

• Ensure accessibility for disabled individuals

JUnit test cases for different scenarios

• Identify different scenarios to be tested

• Write test cases for each scenario

• Ensure test cases cover all possible outcomes

• Use assertions to verify expected results

• Mock dependencies if necessary

Emergency traffic signal system to prioritize ambulance

• Implement a system to detect approaching ambulance using GPS or sensors

• Give priority to ambulance by changing traffic signals to green

• Notify other drivers about the approaching ambulance

• Ensure smooth flow of traffic for ambulance to reach destination quickly

Dual booting allows two operating systems to be installed on one computer, giving the user the option to choose which to use.

• Create a separate partition for each operating system

• Install the first operating system on one partition

• Install the second operating system on the other partition

• Use a boot manager to choose which operating system to boot into

• Examples of boot managers include GRUB and Windows Boot Manager

RDBMS is a type of DBMS that stores data in a structured format using tables with relationships, while DBMS is a general term for any system that manages databases.

• RDBMS enforces referential integrity and allows for complex queries using SQL

• DBMS does not necessarily enforce relationships between tables

• Examples of RDBMS include MySQL, Oracle, SQL Server

• Examples of DBMS include MongoDB, Redis

Yes, the database schema can be of various types such as relational, hierarchical, network, object-oriented, etc.

• Relational database schema is the most common type, using tables to store data with relationships between them.

• Hierarchical database schema organizes data in a tree-like structure.

• Network database schema allows multiple relationships between records.

• Object-oriented database schema stores data as objects with attributes and methods.

• Examples include MySQL (relational...read more

Mars is known as the red planet due to its reddish appearance.

• Mars is the fourth planet from the Sun in our solar system

• The reddish color of Mars comes from iron oxide, or rust, on its surface

• Mars has a thin atmosphere and is home to the largest volcano and canyon in the solar system

Steps involved in high-rise building construction projects

• 1. Planning and design phase - including obtaining permits and approvals

• 2. Site preparation - clearing the land and setting up utilities

• 3. Foundation construction - laying the groundwork for the building

• 4. Structural framing - building the skeleton of the high-rise

• 5. Installation of mechanical, electrical, and plumbing systems

• 6. Exterior and interior finishing - adding walls, windows, and finishes

• 7. Final inspections a...read more

The largest ocean on earth is the Pacific Ocean.

• The Pacific Ocean covers approximately 63 million square miles, making it the largest ocean on earth.

• It is bordered by Asia and Australia to the west, the Americas to the east, and the Arctic and Antarctic regions to the north and south.

• The Pacific Ocean is home to numerous islands, including Hawaii, Tahiti, and Fiji.

Centralizing a solar power plant in a college involves selecting a suitable location, designing the system, obtaining necessary permits, and installing the equipment.

• Conduct a feasibility study to determine the best location for the solar power plant on campus.

• Design the solar power system based on the energy needs of the college and available space.

• Obtain permits and approvals from local authorities and utility companies.

• Install solar panels, inverters, and other necessary e...read more

Design a web/mobile app for farmers to directly sell their produce.

• Create a user-friendly interface for farmers to list their produce

• Include features for farmers to set prices and quantities

• Implement a search function for buyers to find specific produce

• Include a secure payment system for transactions

• Allow farmers to track their sales and manage inventory

Gateway implementation in Spring Boot allows for routing and filtering of incoming requests to different microservices.

• Use Spring Cloud Gateway for implementing gateway in Spring Boot

• Define routes and filters in application.properties or application.yml

• Example: routes: - id: my_route uri: http://localhost:8080 predicates: - Path=/my_route/**

• Example: filters: - AddRequestHeader=X-Request-Foo, Bar

System design for an electric charger app involves creating a user-friendly interface, integrating with payment systems, and ensuring efficient charging station management.

• Design a user-friendly interface for users to locate and reserve charging stations

• Integrate with payment systems for seamless transactions

• Implement efficient charging station management to monitor availability and maintenance

• Consider scalability for future expansion and integration with electric vehicle net...read more

The capital of India is New Delhi.

• New Delhi is the capital city of India.

• It is located in the northern part of the country.

• New Delhi serves as the seat of the Government of India.

Data skill set refers to the abilities and knowledge related to handling, analyzing, and interpreting data.

• Proficiency in data analysis tools such as SQL, Python, R, or Excel

• Understanding of data structures and algorithms

• Experience with data visualization techniques like Tableau or Power BI

• Knowledge of statistical analysis and machine learning concepts

• Ability to clean and preprocess data for analysis

An interceptor is a middleware component that intercepts incoming and outgoing HTTP requests in an application.

• Interceptors can be used for logging, authentication, error handling, and modifying requests/responses.

• In Angular, interceptors can be used to add headers to HTTP requests or handle errors globally.

• In Spring framework, interceptors can be used for pre-processing and post-processing of requests.

• Interceptors are commonly used in web development to add cross-cutting con...read more

A virtual machine is a software emulation of a physical computer that can run multiple operating systems and applications.

• Virtual machines allow for efficient use of hardware resources by sharing them among multiple virtual machines

• They provide a secure and isolated environment for running applications

• Virtual machines can be easily created, cloned, and moved between physical hosts

• Examples of virtual machine software include VMware, VirtualBox, and Hyper-V

Python and C++ are both programming languages, but Python is interpreted and dynamically typed while C++ is compiled and statically typed.

• Python is easier to learn and write code quickly, while C++ is more complex and requires more time to write code.

• Python is often used for scripting, web development, and data analysis, while C++ is used for system programming, game development, and high-performance computing.

• Python has automatic memory management, while C++ requires manual ...read more

There are 19 letters in the question.

• Count the number of letters in the phrase 'I want you to Answer the question.'

• Include spaces and punctuation marks in your count.

• The total number of letters is 19.

Design diagram for a software developer role.

• Use UML diagrams to show class relationships and interactions

• Include components like classes, interfaces, relationships, and methods

• Consider using tools like Lucidchart or draw.io for creating the diagram

Ping cmd is a network diagnostic tool used to test connectivity between two devices.

• Ping sends ICMP packets to the destination device and measures the response time.

• It can be used to test network latency, packet loss, and network congestion.

• Ping can also be used to determine the IP address of a device.

• Ping can be run from the command prompt on Windows, macOS, and Linux systems.

• Ping can be used with various options such as -t to continuously ping the destination device.

• Ping ca...read more

Heuristic process is a method of evaluating user interfaces based on a set of established principles.

• Heuristic evaluation involves a small group of evaluators who examine the interface and identify potential usability issues.

• The evaluators use a set of established principles, or heuristics, to guide their evaluation.

• Examples of heuristics include visibility of system status, match between system and the real world, and user control and freedom.

• The results of the evaluation ar...read more

A server is a computer or software that provides functionality for other programs or devices. ABAP server is a server that runs ABAP programs.

• A server is a computer or software that provides services or resources to other computers or programs.

• ABAP server is a server that runs ABAP (Advanced Business Application Programming) programs, commonly used in SAP systems.

• ABAP server handles requests from clients and executes ABAP programs to process data or perform tasks.

• ABAP server ...read more

Object oriented programming is a programming paradigm based on the concept of objects, which can contain data and code.

• OOP focuses on creating objects that interact with each other to solve problems

• Encapsulation, inheritance, and polymorphism are key principles of OOP

• Examples of OOP languages include Java, C++, and Python

Callback hell is a situation in asynchronous programming where multiple nested callbacks make the code hard to read and maintain.

• Occurs when multiple asynchronous operations are nested within each other

• Leads to deeply nested code structure which is hard to read and maintain

• Can be avoided by using promises, async/await, or libraries like async.js

To reverse a loop for a linked list, iterate through the list and change the pointers to point in the opposite direction.

• Start by initializing three pointers: current, previous, and next.

• Iterate through the linked list, updating the pointers to reverse the direction of the links.

• Update the head of the linked list to point to the new first node after reversing the loop.