Technosphere Labs Full Stack Developer Interview Questions and Answers for Experienced

30 minutes tech round on Java

Q1. What are properties of java?
Ans. 
Java properties include encapsulation, inheritance, polymorphism, and abstraction.
• Encapsulation: Allows bundling of data and methods that operate on the data within a single unit.

• Inheritance: Enables a class to inherit properties and behavior from another class.

• Polymorphism: Allows objects to be treated as instances of their parent class.

• Abstraction: Hides the implementation details and only shows the necessary feature
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Q2. What is method overloading?
Ans. 
Method overloading is the ability to define multiple methods with the same name but different parameters in a class.
• Allows multiple methods with the same name but different parameters

• Parameters can be different in number, type, or order

• Helps improve code readability and maintainability

• Example: void print(int num) and void print(String text) in a class
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Q1. Explain architecture of project
Ans. 
The project architecture follows a microservices design pattern with separate front-end and back-end components.
• Utilizes microservices architecture for scalability and flexibility

• Separate front-end and back-end components for modularity

• May include technologies like Docker for containerization and Kubernetes for orchestration
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Q2. Async and await difference
Ans. 
Async and await are keywords in JavaScript used for handling asynchronous operations.
• Async is used to define a function as asynchronous, allowing it to use the await keyword.

• Await is used to pause the execution of an async function until a Promise is settled.

• Async functions always return a Promise, which resolves with the value returned by the function.

• Using async/await makes asynchronous code easier to read and write
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Q1. Cloning and its type
Ans. 
Cloning is the process of creating an exact copy of an object or organism.
• There are two main types of cloning: reproductive cloning and therapeutic cloning.

• Reproductive cloning involves creating a genetically identical copy of an organism, such as Dolly the sheep.

• Therapeutic cloning is the process of creating embryonic stem cells for medical research and treatment.

• Cloning can also refer to making copies of software or
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Q2. Difference between final and finalize
Ans. 
final is a keyword in Java used to declare constants, while finalize is a method in Java used for cleanup operations.
• final is used to declare constants in Java

• final variables cannot be reassigned

• finalize is a method in Java used for cleanup operations before an object is garbage collected
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SOLID, API Security, Git commands, Node.js basics

Q1. Questions on OOPS mainly inheritance Questions on Core Java Tricky questions on collections Questions on Java 8
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Q2. Questions on JavaScript What is a closure
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Round duration - 120 Minutes
Round difficulty - Medium

The round was online. It had coding, aptitude and verbal questions.

Q1. Third greatest element
Given an array/list 'ARR' of ‘N’ distinct integers, you are supposed to find the third largest element in the given array 'ARR'.
Input Format :
The first line conta...read more
Ans. Sorting Based Approach
The idea is to sort the array in non-decreasing order, and then return the third element from the back of the array.
 
The steps are as follows :
1. Sort the array in non-decreasing order.
2. Return the third element from the back of the array.
Space Complexity: O(logn)Explanation:
O(1)
 
We are not using any extra space. Thus, the overall space complexity will be O(1).
Time Complexity: O(nlogn)Explan...read more
Answered by CodingNinjas
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Round duration - 20 minutes
Round difficulty - Medium

It was at 11:45 am on Microsoft teams. Interviewer was friendly. I was asked to share my screen.

Q1. Reverse Linked List
Given a singly linked list of integers. Your task is to return the head of the reversed linked list.
For example:
The given linked list is 1 -> 2 -> 3 -> 4-> NULL. Then th...read more
Ans. Brute Force
The brute force approach is to use recursion. First, we reach the end of the Linked List recursively and at last node, we return the last node, which becomes the new head of the partially reversed Linked List. While coming back from each recursion call we add the current node in the current recursion call to the last node of the partially reversed Linked List and assign the current node to null.
 
Steps:
&...read more
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Q2. Technical Questions
Introduction , Projects and technologies worked on , sql queries like select , insert , difference between delete , truncate, drop , synchronized & asynchronized programming , oops p...read more
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Round duration - 20 Minutes
Round difficulty - Easy

It was on microsoft teams. Hr asked me basic questions.

Q1. Basic HR Questions
Introduce yourself.
Are you willing to relocate?
Do you have any other offer in hand?
When can you join our organization?
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Q1. What is angular js
Ans. 
AngularJS is a JavaScript-based open-source front-end web framework mainly maintained by Google.
• AngularJS is used for building dynamic web applications.

• It allows for the creation of single-page applications.

• AngularJS extends HTML with new attributes called directives.
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Q2. What is the use of async pipe
Ans. 
Async pipe is used in Angular to subscribe to an Observable or Promise and automatically manage the subscription.
• It simplifies the process of subscribing to and unsubscribing from asynchronous data streams in Angular templates.

• It automatically subscribes to an Observable or Promise in the template and unsubscribes when the component is destroyed.

• It can be used with *ngFor to iterate over an Observable array and automat
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Merge the array values and how the authentication works

Create the website with responsive

Q1. Discussion about salary part
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