Vieva InTech Software Developer Interview Questions and Answers

Two sum problem DSA fromleetcode

Q1. Event Loop, how does event loop work.
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Q2. Lib UV, explain the function of libuv
Ans. 
Libuv is a multi-platform support library with a focus on asynchronous I/O.
• Provides event loop, networking, and file system access APIs

• Supports asynchronous operations for handling I/O events efficiently

• Used in Node.js for handling non-blocking I/O operations
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Q3. Async programming in JS
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Async programming in JS allows for non-blocking operations, improving performance and user experience.
• Use async/await to write asynchronous code in a synchronous manner

• Promises are a common way to handle asynchronous operations

• Callbacks can also be used for async programming, but can lead to callback hell

• Utilize setTimeout and setInterval for delayed and repeated tasks
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MCQ test consisting of 70 mcqs in 75 minutes from aptitude english and cs fundamentals. If cleared next paper 2 coding qs medium level

Q1. Two sum leetcode problem
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Q2. What problems you faced in your project
Ans. 
I faced challenges with integrating third-party APIs and debugging complex logic.
• Difficulty in understanding and implementing third-party APIs

• Issues with data synchronization between different systems

• Troubleshooting complex logic errors

• Managing dependencies and version conflicts

• Time constraints affecting problem-solving
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Q1. Functional interface
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Q2. Find if array of numbers, which are prime, using streams
Ans. 
Use streams to find prime numbers in an array
• Use Java streams to filter out non-prime numbers from the array

• Check if a number is prime by dividing it by all numbers less than its square root

• Create a method to check if a number is prime
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DP graphs strings it was good

Q1. Reverse a linkded list
Ans. 
Reverse a linked list by changing the direction of pointers
• Start with three pointers: current, previous, and next

• Iterate through the list, updating pointers to reverse the direction

• Return the new head of the reversed list
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Q2. Print fibonacci series
Ans. 
The Fibonacci series is a sequence of numbers where each number is the sum of the two preceding ones.
• Start with two variables initialized to 0 and 1

• Loop through desired number of iterations, adding the previous two numbers to get the next number

• Print or store each number in the series
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Q1. Dependency injection
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Q2. What are oops concepts
Ans. 
Object-oriented programming concepts that focus on data encapsulation, inheritance, polymorphism, and abstraction.
• Encapsulation: bundling data and methods that operate on the data into a single unit (class)

• Inheritance: ability of a class to inherit properties and behavior from another class

• Polymorphism: ability to present the same interface for different data types

• Abstraction: hiding the complex implementation details
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Q1. Why do you want to switch
Ans. 
I want to switch to explore new technologies and challenges in a different industry.
• Interested in learning new skills and technologies

• Seeking new challenges and opportunities for growth

• Want to explore different industry perspectives
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Q2. Salry expectations
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Q1. Question on oop concepts
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Q2. Coding questions
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Q1. Technical questions on firstround
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Q2. Logging System explanations about splunk
Ans. 
Splunk is a powerful logging system used for collecting, indexing, and analyzing machine-generated data.
• Splunk is used for real-time monitoring, searching, and analyzing log data from various sources.

• It can be used to troubleshoot issues, monitor system performance, and detect security threats.

• Splunk allows users to create custom dashboards and reports for visualizing data insights.

• It supports a wide range of data sour...read more
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Q3. Microservices Architecture explanation
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Microservices architecture is an approach to software development where a single application is composed of small, independent services that communicate with each other through APIs.
• Each service is responsible for a specific function or feature of the application

• Services are loosely coupled, allowing for easier scalability and maintenance

• Communication between services is typically done through lightweight protocols lik...read more
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Q4. Java 8 programming
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Q1. Java 8 Programming
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Quants, DSA, Logical, Analytical, OS, DBMS

Q1. Please introduce yourself
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Q2. Why UBS and what excited you
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