Sonata Software Senior Developer Interview Questions and Answers

Q1. Java 8 question about Strings.
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Q1. Diff between JDK,JVM,JRE. Equals and HashCode
Ans. 
JDK is a development kit, JRE is a runtime environment, and JVM is a virtual machine. Equals compares object values, HashCode returns a unique integer for an object.
• JDK includes JRE and development tools, while JRE includes JVM and necessary libraries

• JVM is responsible for executing Java bytecode

• Equals method compares the values of two objects, while == compares their references

• HashCode method returns a unique integer ...read more
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Q1. Given 2 Nodes 1->9 ->0 1->0 Add both of them so resulting node would be 2->0->0 190 +10 = 200 Java 8 questions
Ans. 
Add two linked lists representing numbers and return the resulting linked list.
• Traverse both linked lists and add the corresponding digits, keeping track of carry.

• Create a new node for each digit and update the carry for the next iteration.

• If one list is longer than the other, add the remaining digits to the result.

• Handle the case where the carry is not zero after all digits have been added.

• Time complexity: O(max(m,n))...read more
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Q1. Salary Expectations about the job
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I expect a competitive salary based on my experience, skills, and the responsibilities of the role.
• I have extensive experience in senior developer roles and have consistently delivered high-quality work.

• I have a strong understanding of various programming languages and frameworks.

• I have successfully led and mentored teams in previous positions.

• I am confident in my ability to contribute to the success of the company.

• I a...read more
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Q1. Basic core java questions, spring boot and spring mvc questions and other project related questions
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Q1. Project related questions and infrastructure of application
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Q1. Salary negotiation, company policy explanation
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Q1. How can you remove duplicate numbers from an array?
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Q2. What are the differences between var, let, and const in JavaScript?
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Test will be in hacker rank there would be a difficulty level between easy to medium

Q1. Question will be from data structure and easy to medium level of the programming laanguage question
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Q1. This is just to check your english ability
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Q1. It was mainly java, interviewers are very good and supportive to elaborate more about problem.
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Q2. Scenario based on your earlier work experience
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Q1. How do you optimize Stored procedure
Ans. 
Optimizing stored procedures involves using proper indexing, reducing unnecessary loops, and minimizing database calls.
• Use proper indexing on columns used in WHERE clauses to improve query performance

• Avoid using cursors and loops whenever possible, as they can be inefficient

• Minimize the number of database calls by combining multiple queries into a single query or using temporary tables

• Consider using bulk processing tec...read more
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Q2. How do you optimize SQL query
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Optimizing SQL queries involves using indexes, minimizing data retrieval, avoiding unnecessary joins, and optimizing query structure.
• Use indexes on columns frequently used in WHERE clauses

• Minimize data retrieval by selecting only necessary columns

• Avoid unnecessary joins by using EXISTS or IN clauses instead

• Optimize query structure by using appropriate join types and conditions
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Q3. What is use of returning clause
Ans. 
Returning clause is used to return a value from a function or procedure in PL/SQL.
• Used to return a single value from a function or procedure

• Can be used to return multiple values using OUT parameters

• Helps in passing values back to the calling program
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Q4. Disadvantages of triggers
Ans. 
Triggers can lead to performance issues, complexity, and potential for unintended consequences.
• Triggers can make code harder to debug and maintain

• They can lead to cascading effects if not carefully implemented

• Performance can be impacted if triggers are not optimized

• Triggers can introduce dependencies between different parts of the codebase
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Prev job work and project details , roles and responsibility

Q1. What is SDLC process
Ans. 
SDLC process is a structured approach to software development that defines tasks performed at each stage of the software development life cycle.
• SDLC stands for Software Development Life Cycle

• It includes stages like planning, analysis, design, implementation, testing, and maintenance

• Each stage has specific goals and deliverables to ensure the quality and success of the software project
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Q2. What is the ASp.net mean for ?
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ASP.NET stands for Active Server Pages .NET, a web application framework developed by Microsoft.
• ASP.NET is a server-side web application framework used for building dynamic web pages and web applications.

• It allows developers to create web applications using languages like C# or VB.NET.

• ASP.NET provides tools and libraries for building web forms, MVC (Model-View-Controller) applications, and Web API services.

• It is part o...read more
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All maths questions and coding questions

Array problems, agular basic, JS snippets