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Synechron Senior Software Developer Interview Questions and Answers
7 Interview questions
Cluster load balancing in Node.js helps distribute incoming requests among multiple instances of the application to improve performance and reliability.
Cluster load balancing allows Node.js applications to utilize multiple CPU cores efficiently by creating child processes to handle incoming requests.
It helps prevent a single instance of the application from becoming overwhelmed with requests, leading to improved p...
CQRS is a design pattern that separates the read and write operations of a system, using different models for each.
CQRS separates the responsibility of handling commands (write operations) from queries (read operations).
It helps in achieving better scalability, performance, and maintainability by using different models for reads and writes.
For example, in a banking application, the write model may handle transacti...
Transactions in a database ensure that a group of operations are completed successfully or rolled back if any part fails.
Transactions help maintain data integrity by ensuring all changes are either committed or rolled back as a single unit.
ACID properties (Atomicity, Consistency, Isolation, Durability) are maintained in transactions.
Examples of transactions include transferring money between bank accounts or booki...
Durability ensures that once a transaction is committed, it will persist even in the event of a system failure.
Durability guarantees that once a transaction is committed, it will not be lost even in the event of a system crash.
This is typically achieved through mechanisms like write-ahead logging and periodic checkpoints.
Examples of ACID-compliant databases that ensure durability include PostgreSQL, Oracle, and SQ...
Replication in a database involves copying and distributing data across multiple servers to ensure redundancy and availability.
Replication involves creating multiple copies of the database on different servers.
Changes made to the primary database are then propagated to the replica databases.
Replication can be synchronous or asynchronous, with synchronous replication ensuring data consistency but potentially impact...
There are two types of pipes: named pipes and anonymous pipes.
Named pipes are used for communication between processes on different computers or on the same computer.
Anonymous pipes are used for communication between processes on the same computer.
Named pipes have a unique name and can be accessed by any process that knows the name.
Anonymous pipes are created by a process and can only be accessed by that process a...
Hoisting is a JavaScript mechanism where variables and function declarations are moved to the top of their scope.
Hoisting applies to variable declarations and function declarations
Variables declared with var are hoisted to the top of their scope
Function declarations are hoisted before variables
Function expressions are not hoisted
Hoisting can lead to unexpected behavior and should be avoided
Synechron Senior Software Developer Interview Experiences
7 interviews found
I appeared for an interview in Jan 2025.
(4 Questions)
- Q1. What is the role of cluster load balancing in Node.js?
- Ans.
Cluster load balancing in Node.js helps distribute incoming requests among multiple instances of the application to improve performance and reliability.
Cluster load balancing allows Node.js applications to utilize multiple CPU cores efficiently by creating child processes to handle incoming requests.
It helps prevent a single instance of the application from becoming overwhelmed with requests, leading to improved perfor...
- Q2. What is the CQRS (Command Query Responsibility Segregation) design pattern?
- Ans.
CQRS is a design pattern that separates the read and write operations of a system, using different models for each.
CQRS separates the responsibility of handling commands (write operations) from queries (read operations).
It helps in achieving better scalability, performance, and maintainability by using different models for reads and writes.
For example, in a banking application, the write model may handle transactions a...
- Q3. How do transactions work in a database?
- Ans.
Transactions in a database ensure that a group of operations are completed successfully or rolled back if any part fails.
Transactions help maintain data integrity by ensuring all changes are either committed or rolled back as a single unit.
ACID properties (Atomicity, Consistency, Isolation, Durability) are maintained in transactions.
Examples of transactions include transferring money between bank accounts or booking a ...
- Q4. How does durability function in ACID databases?
- Ans.
Durability ensures that once a transaction is committed, it will persist even in the event of a system failure.
Durability guarantees that once a transaction is committed, it will not be lost even in the event of a system crash.
This is typically achieved through mechanisms like write-ahead logging and periodic checkpoints.
Examples of ACID-compliant databases that ensure durability include PostgreSQL, Oracle, and SQL Ser...
(3 Questions)
- Q1. What are the advantages of using a microservice architecture?
- Ans.
Advantages of using a microservice architecture include scalability, flexibility, fault isolation, and technology diversity.
Scalability: Microservices allow for individual components to be scaled independently, leading to better resource utilization.
Flexibility: Each microservice can be developed, deployed, and updated independently, allowing for faster innovation and reduced time to market.
Fault Isolation: If one micr...
- Q2. How does replication work in a database?
- Ans.
Replication in a database involves copying and distributing data across multiple servers to ensure redundancy and availability.
Replication involves creating multiple copies of the database on different servers.
Changes made to the primary database are then propagated to the replica databases.
Replication can be synchronous or asynchronous, with synchronous replication ensuring data consistency but potentially impacting p...
- Q3. Why CQRS works
- Ans.
CQRS works by separating read and write operations in a system, improving scalability and performance.
CQRS allows for optimized read and write operations by using separate models for each
It simplifies the design of the system by separating concerns
Improves scalability as read and write operations can be scaled independently
Enables better performance by allowing for optimized data storage and retrieval strategies
I applied via Company Website and was interviewed in Oct 2024. There were 2 interview rounds.
One question related to string manipulation which is of medium level difficulty.
(2 Questions)
- Q1. Asked questions related to Java and Spring Boot.
- Q2. They also asked questions related to previous projects.
Selected
I applied via LinkedIn and was interviewed in Jun 2024. There was 1 interview round.
Technical round: where they will ask you about the technical questions in your technology and few coding questions.
(1 Question)
- Q1. Mostly on previous work done And general tableau questions
(2 Questions)
- Q1. How many types of pipe
- Ans.
There are two types of pipes: named pipes and anonymous pipes.
Named pipes are used for communication between processes on different computers or on the same computer.
Anonymous pipes are used for communication between processes on the same computer.
Named pipes have a unique name and can be accessed by any process that knows the name.
Anonymous pipes are created by a process and can only be accessed by that process and it...
- Q2. What is Hoisting in js
- Ans.
Hoisting is a JavaScript mechanism where variables and function declarations are moved to the top of their scope.
Hoisting applies to variable declarations and function declarations
Variables declared with var are hoisted to the top of their scope
Function declarations are hoisted before variables
Function expressions are not hoisted
Hoisting can lead to unexpected behavior and should be avoided
Interview Preparation Tips
Skills evaluated in this interview
Nirmal Sharma
I applied via Naukri.com and was interviewed in Apr 2022. There was 1 interview round.
(2 Questions)
- Q1. OOPS concepts, Springboot starter and annotations,Java 8 features
- Q2. Techno Managerial, 4 th highest salary, Microservices features
Interview Preparation Tips
Selected
I applied via Naukri.com and was interviewed before Apr 2023. There were 3 interview rounds.
Major questions on JavaScript
Javascript questions along with related technology questions
(1 Question)
- Q1. What is your salary expectation
Interview Preparation Tips
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Software Engineer Interview Questions & Answers
Virtusa Consulting Services
Anonymous
posted on 7 May 2022
I applied via Campus Placement and was interviewed before May 2021. There were 2 interview rounds.
Basic aptitude knowledge
Strong in java
Interview Preparation Tips
I applied via Naukri.com and was interviewed before Sep 2019. There were 6 interview rounds.
Interview Questionnaire
3 Questions
- Q1. IQ Test
- Q2. Machine Test
- Q3. Face To Face
Interview Preparation Tips
1. IQ Test
2. Machine Test
3. Face to Face
IQ Test is not so tough but prepare well Machine Test
Machine Test Question are like :-
Q.1 - We declare a variable in C++ like "is_this_a_variable" and in Java like "IsThisAVariable". There is underscore in between every word and first alphabet of every word is in lowercase in C++ and in Java first alphabet is in capital without underscore. Create a program in which if user input a string in a C++ variable format it will convert the input in java variable format.
Q2. Count the frequency of a string.
user input string - pqhphi
output-
p - 2
q - 1
h - 2
i - 1
Be strong in algorithms and data structure.
Software Developer Interview Questions & Answers
Virtusa Consulting Services
Anonymous
posted on 15 Sep 2021
I appeared for an interview before Sep 2020.
(2 Questions)
Round duration - 90 minutes
Round difficulty - Easy
It happens in very friendly manner.
- Q1.
Paths in a Matrix Problem Statement
Given an 'M x N' matrix, print all the possible paths from the top-left corner to the bottom-right corner. You can only move either right (from (i,j) to (i,j+1)) or dow...
- Ans.
Print all possible paths from top-left to bottom-right in a matrix by moving only right or down.
Use backtracking to explore all possible paths from top-left to bottom-right in the matrix.
At each cell, recursively explore moving right and down until reaching the bottom-right corner.
Keep track of the current path and add it to the result when reaching the destination.
- Q2. Can you create 2 tables in SQL and perform different operations on them?
- Ans.
Yes, I can create 2 tables in SQL and perform operations like INSERT, SELECT, UPDATE, and DELETE.
Create Table 1: CREATE TABLE employees (id INT, name VARCHAR(50), salary DECIMAL(10,2));
Create Table 2: CREATE TABLE departments (dept_id INT, dept_name VARCHAR(50));
Insert Data: INSERT INTO employees VALUES (1, 'John Doe', 50000);
Select Data: SELECT * FROM employees WHERE salary > 40000;
Update Data: UPDATE employees SET...
Round duration - 90 minutes
Round difficulty - Medium
No problem occur very friendly environment.
(1 Question)
Round duration - 90 minutes
Round difficulty - Hard
- Q1.
Rat in a Maze Problem Statement
You need to determine all possible paths for a rat starting at position (0, 0) in a square maze to reach its destination at (N-1, N-1). The maze is represented as an N*N ma...
- Ans.
Find all possible paths for a rat in a maze from source to destination.
Use backtracking to explore all possible paths in the maze.
Keep track of visited cells to avoid revisiting them.
Explore all possible directions (up, down, left, right) from each cell.
Add the current direction to the path and recursively explore further.
If the destination is reached, add the path to the list of valid paths.
Interview Preparation Tips
Tip 1 : Competitive programming plays a major role when you are appearing for coding rounds as a fresher. In the coding rounds, you won't get direct problems copied from Geeksforgeeks or Leetcode. You would be required to use your logical thinking to go ahead in the process. This is where competitive programming helps.
Tip 2 : Coding rounds are all about Coding + Timing. Most people fail to excel due to the pressure of a timer ticking on your head. So, instead of just solving problems, try to participate in timed contests. This will help you be used to the pressure of the timer.
Tip 3 : Many big companies like Microsoft, Amazon, and even Google expect you to be good at standard problems. So, once you are done with coding round by your logical skills and competitive programming, you must be well versed with some standard problems in order to excel.
Application resume tips for other job seekersTip 1 : Make it short, crisp, and simple. It is always good to have a 1 pager resume.
Tip 2 : Resume must comprise of the following: Educational Qualifications, Technical skills, Projects, Work experience (if any), Achievements. Other than this, you may include some extra co-curricular achievements.
Skills evaluated in this interview
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