Ruff India Interview Questions and Answers

Depending on the role which U applied 2 or
3 rounds of online test will come

Q1. This is the final interview with HR and after If U selected they will contact via mail
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Q2. Self introduction
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Q3. Project Explanation mentioned in the resume
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Q4. Additionally depending on the Interviewer/HR some may ask hypthothetical questions
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Q1. Could you elaborate on your roles and responsibilities in your previous employment?
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Q2. What was your role in the project, specifically related to data transformation and dashboard creation?
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Q3. How do you optimize and manage large datasets, and what data sources do you utilize to obtain this data?
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Q4. Guesstimates like how many traffic signals are there in Noida.
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Q5. The interviewer asked SQL questions related to window functions, joins, and advanced aggregations, such as running sum and rolling sum.
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Q1. Second round is also a technical round and similar to first round . Medium to high level sql questions and questions related to the project you're working on and Guesstimates will be asked by the interview...read more
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Q1. Project manager will take the third round interview and inquire about your knowledge of the company, and some technical and scenario-based questions related to decision-making and problem-solving approach.
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Q1. Final round will be an HR round.
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Q1. Tell me about yourself
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Q2. Techincal questions
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General knowlege and communication

Q1. Walk me through your resume
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Q2. Why to choose this job
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Q1. Tell me about yourself
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Q2. Technical question
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Q1. Tell me the output of this sql query
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Q1. Perform Vlookup and Xlookup and pivot table and other formulas in a given data set
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Q1. Sitution based question
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Q1. How will you rate yourself in terms of skills and all other Hr typical question
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Q1. Salary negotiations and hike and what expectation I have
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Q1. Technical questions on Mainframes and TOSCA
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Q1. Client round with technical questions on mainframes and tosca
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Q1. Till date they have not enrolled me even after confirming and doing my documentation
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Q1. Documentation round which is still going on and its been 2 months
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Q1. Architecture discussion around projects
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Q1. Caching, auth discussion in depth
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Q1. My family details
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Q2. My home location
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Q3. Present time working this job
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Q4. What are this work titles
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Q5. What are my company post
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Q1. What is the architecture of the Java Virtual Machine (JVM)?
Ans. 
The Java Virtual Machine (JVM) is an abstract computing machine that enables a computer to run Java programs.
• JVM is platform-independent and converts Java bytecode into machine code.

• It consists of class loader, runtime data areas, execution engine, and native method interface.

• JVM memory is divided into method area, heap, stack, and PC register.

• Examples of JVM implementations include Oracle HotSpot, OpenJ9, and GraalVM.
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Q2. What is the default connection pooling in Spring Boot, and how can it be customized?
Ans. 
The default connection pooling in Spring Boot is HikariCP, which can be customized through properties in the application.properties file.
• HikariCP is the default connection pooling library in Spring Boot, known for its high performance and low overhead.

• To customize the connection pooling, you can modify properties like 'spring.datasource.hikari.*' in the application.properties file.

• For example, you can set maximum pool ...read more
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Q3. What are the best practices for optimizing a Spring Boot application?
Ans. 
Best practices for optimizing a Spring Boot application
• Use Spring Boot Actuator to monitor and manage application performance

• Implement caching mechanisms like Spring Cache to reduce database calls

• Optimize database queries and indexes for better performance

• Use asynchronous processing with Spring's @Async annotation for non-blocking operations

• Profile and analyze application performance using tools like VisualVM or JProfi
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Q4. What is a heap dump, and how can it be used to identify memory leaks?
Ans. 
A heap dump is a snapshot of the memory usage of a Java application at a specific point in time.
• Heap dumps can be generated using tools like jmap or VisualVM.

• They provide detailed information about objects in memory, their sizes, and references.

• Analyzing a heap dump can help identify memory leaks by pinpointing objects that are consuming excessive memory.

• Common signs of memory leaks in a heap dump include a large numbe...read more
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Q5. How can you diagonally iterate through and print the elements of a 2D array?program
Ans. 
Diagonally iterate through and print elements of a 2D array of strings.
• Use nested loops to iterate through rows and columns of the 2D array.

• Calculate the diagonal elements by incrementing row and column indices together.

• Print the elements as you iterate through the diagonal of the array.
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A technical interview that evaluates a candidate's programming abilities.

Evaluate a candidate's skills and abilities in areas such as logical reasoning, problem-solving, and verbal communication.

Q1. What programming languages are you proficient in?
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Q2. What is your area of expertise?
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Q3. Artificial intelligence
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Current affairs, business matters, and abstract subjects.

Q1. Can you provide a brief overview of your background and experience
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Q2. What are your strengths and weaknesses?
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