Volante Technologies Software Developer Interview Questions and Answers

Q1. Basic core java
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Q1. Aptitude test in basement
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General basic knowledge

Q1. What are your 12th %
Ans. 
My 12th % is 85%
• My 12th percentage is 85%

• I scored 85% in my 12th grade exams

• My 12th grade percentage is 85%
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Questions were based on basic aptitude like seating arrangement

Q1. Basic oops concepts
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Q2. SQL questions like triggers and creating an SQL table etc
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Q1. Coding like arrays basic codes like reversing an array
Ans. 
Reversing an array involves swapping elements from both ends towards the center.
• Use a loop to iterate from the start to the middle of the array.

• Swap the elements at the current index and its corresponding index from the end.

• Example: For array ['a', 'b', 'c'], after reversing it becomes ['c', 'b', 'a'].
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Q1. How dis you tackle the one incident where you disagree with the team lead approach?
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Q2. How do you make sure to deliver on time when there are uncertainty?
Ans. 
To deliver on time despite uncertainty, I prioritize tasks, communicate effectively, set realistic deadlines, and have contingency plans.
• Prioritize tasks based on importance and impact on project timeline

• Communicate effectively with team members and stakeholders to address any uncertainties or roadblocks

• Set realistic deadlines taking into account potential delays or uncertainties

• Have contingency plans in place to mitig...read more
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Q1. Basic oops concepts and our projects
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Q2. Basic strucutes of oops concpts and micro services
Ans. 
OOPs concepts include encapsulation, inheritance, polymorphism, and abstraction. Microservices are small, independent services that communicate with each other.
• OOPs concepts help in creating modular and reusable code.

• Encapsulation ensures that data is hidden and can only be accessed through defined methods.

• Inheritance allows a class to inherit properties and methods from a parent class.

• Polymorphism allows objects to ta...read more
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Q1. How much was your previous in hand salary?
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Q2. How far do you stay from the office, during nights if needed can you come on your own during any critical situation (Note: I'm a woman)?
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Q3. Are you ok with 40% less in-hand pay from your previous job in Banglore, since you're getting to stay in your hometown and your expenses will be less here?
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Q4. Are you married? Do you have children? What does your husband do? How long are you planning to stay in Bhubaneswar?
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Q5. Are you ok with an employment bond of 24 months with a probation period of 12 months
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Q1. What are different modules of node js?
Ans. 
Node.js has several core modules that provide essential functionality for building applications.
• HTTP: Allows Node.js to transfer data over the Hyper Text Transfer Protocol (HTTP)

• FS: Provides file system operations like reading and writing files

• OS: Gives information about the operating system on which Node.js is running

• Path: Helps in working with file and directory paths

• Events: Allows to handle events in Node.js applica...read more
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Q2. Difference between angular and node js
Ans. 
Angular is a front-end framework for building client-side applications, while Node.js is a back-end runtime environment for running server-side applications.
• Angular is used for building dynamic web applications with HTML, CSS, and TypeScript.

• Node.js is used for server-side scripting and building scalable network applications.

• Angular is a front-end framework developed and maintained by Google.

• Node.js is a back-end runti...read more
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Q3. Difference between process.nextTick( ) and setImmediate( )
Ans. 
process.nextTick() is called before any I/O events, while setImmediate() is called after I/O events.
• process.nextTick() is called at the end of the current event loop cycle, before any I/O events.

• setImmediate() is called at the beginning of the next event loop cycle, after I/O events.

• Use process.nextTick() for executing code asynchronously but as soon as possible.

• Use setImmediate() for executing code asynchronously afte...read more
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Q4. How to implement async in node js
Ans. 
Async in Node.js can be implemented using callbacks, promises, or async/await.
• Use callbacks to handle asynchronous operations in Node.js

• Promises can be used for cleaner asynchronous code

• Async/await provides a more synchronous way to write asynchronous code
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Q5. General operations of Casendra CQL
Ans. 
Casendra CQL is a query language used for general operations in Casendra database.
• Casendra CQL is similar to SQL but optimized for Cassandra database

• It supports CRUD operations (Create, Read, Update, Delete)

• It allows for filtering, sorting, and aggregating data

• Example: SELECT * FROM table_name WHERE column_name = value;
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Q6. Characteristics of column family
Ans. 
Column family is a data model used in NoSQL databases to store related data together.
• Used in NoSQL databases like Apache Cassandra

• Consists of rows and columns

• Columns are grouped together and stored on disk sequentially

• Supports wide rows and dynamic columns

• Example: In a social media application, a column family could store user profiles with columns for name, age, and location
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Q1. CEO asked to turn on camera. Asked if i'm married (i'm a woman), the interview was scheduled for 10;30pm in the night. Asked me not to be so formal and treat him like a friend and be casual. I suspect he w...read more
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