Suja Associates full stack .net developer Interview Questions, Process, and Tips

Basic aptitude test with technical and non technical question

Q1. What is event loop
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Q1. Questions related to 3GPP charging systems and protocols
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Few coding tasks asked like palindrome number
Factorial
Basic concept tests based on DSA
Like prove that set is unordered

Q1. If a glass is started filling with water by 1ml at 0sec and gets doubled at every successive second, at what second the glass is half full
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So basically the questions were from strings, arrays, bitwise operators and some mathematical logic based questions. There were 10 questions and they will provide you a laptop and you have to complete all of them in 3 hours (java, c++)
Just be prepared on the above mentioned topics the questions were of easy level if your concept is clear you can crack it easily then there will one more round there they will ask theoretical questions once these both technical rounds are clear you're all set to go for HR round. So this is for 1-2yrs exp guys for freshers they also have to go through aptitude round and question pattern is similar

Q1. Basic oops concepts some tricky ques
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Q2. Questions from collection framework
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Q3. Multithreading basic questions
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Q1. Basic hr questions
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Q1. Background about me
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Q2. 2 DSA questions
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Q1. Explain MVC architecture flow
Ans. 
MVC is a software architecture pattern that separates an application into three interconnected components: Model, View, and Controller.
• Model represents the data and business logic of the application

• View is responsible for rendering the user interface

• Controller handles user input and updates the model and view accordingly

• MVC promotes separation of concerns and modularity

• MVC is widely used in web development frameworks l
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Q2. Explain MVVM architecture flow and reason for its use
Ans. 
MVVM is a software architecture pattern that separates the user interface from the business logic.
• MVVM stands for Model-View-ViewModel

• Model represents the data and business logic

• View represents the user interface

• ViewModel acts as a mediator between the View and Model

• ViewModel exposes data and commands to the View

• MVVM is used to improve code maintainability, testability, and separation of concerns
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Q1. Project, Oops Concept, Java , which technology u have used ? Framework
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Q2. Framework, Explain Long Polling ,
Ans. 
Long polling is a web technique where the client sends a request to the server and the server holds the connection open until new data is available.
• Long polling is a variation of the traditional polling technique where the client sends a request to the server and the server keeps the connection open until new data is available.

• It is often used in web applications to simulate real-time updates without the need for const...read more
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Q3. GraphQL Vs Rest
Ans. 
GraphQL is a query language for APIs that allows clients to request only the data they need, while REST is an architectural style for designing networked applications.
• GraphQL allows clients to request specific data in a single request, reducing over-fetching and under-fetching of data.

• REST uses multiple endpoints for different resources, leading to multiple requests for related data.

• GraphQL provides a strongly typed sc...read more
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Round duration - 120 Minutes
Round difficulty - Hard

Q1. 
Matrix Rank Calculation
Given a matrix ARR of dimensions N * M, your task is to determine the rank of the matrix ARR.
Explanation:
The rank of a matrix is defined as:
(a) The maximum number of linearly...read more
Ans. Row Echelon Form
Approach:
• The idea is based on converting the given input matrix ARR into row echelon form.
• Since we know that the rank of the matrix can not be greater than min(N, M). So we will check if N > M then we will transpose the input matrix ARR since we are using row echelon form so the matrix has to be transformed in such a way that in each row all the elements to the left of the diagonal element must be ze...read more
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Round duration - 60 Minutes
Round difficulty - Medium

This is an elimination round. The interviewer will ask some technical questions and ask to solve some coding questions.
The interview was on Microsoft teams and coding was on codility.

Q1. 
Check Permutation Problem Statement
Determine if two given strings, 'str1' and 'str2', are permutations of each other.
Explanation:
Two strings are permutations of each other if one string's characters ...read more
Ans. Frequency Array Approach
• The first and the foremost condition for two strings to be the permutations of each other is that the frequency of each element in both of them should be the same.
• It can be proven by a very simple argument that we are only rearranging the letters, and not adding or deleting any character.
• So we allocate an array of size 256 (that is the number of distinct ASCIIacharactersterst to store the freque...read more
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Round duration - 60 Minutes
Round difficulty - Hard

Interviewers asked some questions regarding System design and then asked me to perform the task

Q1. Design a vending machine.
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Round duration - 60 Minutes
Round difficulty - Hard

There were 2 interviewers. This round was basically Distributed systems.

Q1. 
Alternating Largest Problem Statement
Given a list of numbers, rearrange them such that every second element is greater than its adjacent elements. Implement a function to achieve this rearrangement.
Inp...read more
Ans. Brute forceSpace Complexity: O(1)Explanation: Time Complexity: O(n)Explanation:
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Round duration - 60 Minutes
Round difficulty - Hard