LenDenClub Graduate Engineer Interview Questions and Answers

Q1. Tell me about yourself?
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Q2. Tell me about your daily activities in your current company?
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Q3. Why do you want to work in i-exceed
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Q1. Explain websphere installation methods followed
Ans. 
WebSphere installation methods include GUI, silent, and response file installations.
• WebSphere can be installed using a graphical user interface (GUI).

• Silent installation allows for installation without user interaction.

• Response file installation uses a pre-recorded response file to automate the installation process.
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Q2. What is meant by connection pool properties
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Connection pool properties refer to the settings that control the behavior of a connection pool.
• Connection pool properties include settings such as maximum connections, minimum connections, and connection timeout.

• These properties can be configured in the application server or in the database driver.

• The purpose of connection pool properties is to optimize the use of database connections and improve application performan...read more
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Q3. Explain garbage collection
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Garbage collection is an automatic memory management process that frees up memory occupied by objects that are no longer in use.
• Garbage collection is performed by the JVM in Java and CLR in .NET languages.

• It helps prevent memory leaks and null pointer exceptions.

• Garbage collection can be triggered manually or automatically.

• Examples of garbage collection algorithms include mark-and-sweep, reference counting, and copying
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Q4. How ssl achieved in websphere
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SSL in WebSphere is achieved through configuration of SSL certificates and enabling SSL protocols.
• SSL configuration involves generating and importing SSL certificates

• SSL protocols such as TLS can be enabled through server.xml configuration

• WebSphere also supports SSL offloading through plug-in configuration

• SSL can be enforced for specific applications or URLs through web.xml configuration
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Q5. How security configured in websphere
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Security in WebSphere is configured through various mechanisms such as SSL, authentication, authorization, and encryption.
• SSL can be configured to secure communication between clients and servers

• Authentication can be configured using various methods such as LDAP, database, or custom authentication

• Authorization can be configured using role-based access control or custom authorization

• Encryption can be configured to secur
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Q6. Any work experience in other middleware platforms
Ans. 
Yes, I have experience in working with Apache Kafka and RabbitMQ.
• Worked on developing microservices using Apache Kafka as a messaging platform

• Implemented RabbitMQ for message queuing in a project

• Experience in configuring and managing both platforms
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Q7. Any exposure in devops, cloud technologies
Ans. 
Yes, I have experience in both devops and cloud technologies.
• I have worked with AWS, Azure, and Google Cloud Platform.

• I have experience with containerization using Docker and Kubernetes.

• I have worked with CI/CD pipelines using tools like Jenkins and GitLab.

• I have experience with infrastructure as code using tools like Terraform and CloudFormation.
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Q1. Twll me about yourself
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Q2. What is tour current ctc
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My current CTC is confidential.
• I prefer not to disclose my current CTC as it may affect negotiations.

• I am open to discussing my salary expectations for this role.

• My previous salary was in line with industry standards for my experience level.
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Q3. What is the expected ctc
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The expected CTC depends on the company's budget and the candidate's experience and skills.
• The CTC can vary based on the company's location and industry.

• The candidate's negotiation skills can also impact the final CTC.

• The CTC can be influenced by the candidate's education, certifications, and previous work experience.

• The CTC can range from 8-10 lakhs per annum for a Senior Software Engineer role in India.

• Some companies...read more
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Q4. Why we need to recruit you in our company
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Q5. How good are you to prove that you are genuine at work
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First round was aptitude and 2 coding questions

Q1. Second round was face to face was fully technical asked me code some basic code
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Q2. Find 2nd largest decimal number from given numbers
Ans. 
Iterate through the numbers and keep track of the largest and second largest numbers.
• Iterate through the numbers and compare each number with the current largest and second largest numbers.

• Update the second largest number if a new number is found that is greater than the current second largest number.

• Return the second largest number at the end of the iteration.
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Q1. Next was manager round it was also little technical
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Q1. This round was with vice president
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Q1. This round was final round about salary negotiation and hr round
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Technical SQL Coding Round of 1 hour

Began with 2 easy generic question -
1. No. of record on different types of joins.
2. Employees who have higher salaries than their managers,

Then moved to medium questions -
1. Implement Rolling sum with & without window functions.
2. Other questions were on CTEs, Joins & other complex queries.

Bar Raiser Round of 1 hour involving -

1. Case study: How can we leverage product knowledge & analytics to increase Amazon Prime Revenue from 10% to 12%?

2. Metrics awareness: Common metrics discussion like DAU, PDAU, MAU, Retention, Churn, etc.

3. Resume based work exp discussion

Q1. Quick culture fitment round with HR discussing about past work experience, my expectations & why I want to join Jupiter.
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Q1. Find connected components in a graph
Ans. 
Use Depth First Search (DFS) to find connected components in a graph
• Start by initializing all vertices as unvisited

• Iterate through each vertex and perform DFS to find connected components

• Keep track of visited vertices to avoid revisiting

• Example: For a graph with vertices {A, B, C} and edges {(A, B), (B, C)}, the connected components are {A, B, C}
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Q1. Design chess game
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Design a chess game with proper board setup, piece movements, and win conditions.
• Create a 8x8 grid to represent the chess board

• Assign initial positions to each type of chess piece (pawn, rook, knight, bishop, queen, king)

• Implement rules for each piece's movement (e.g. pawn moves forward, rook moves horizontally/vertically)

• Check for valid moves and capture opponent's pieces

• Implement win conditions (checkmate, stalemate)

• ...read more
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How to increase personal insurance revenue to 5x?

We in group of 10 were given a topic on which 2 feature to select out of 4 for a project, it lasted about 10 minutes, was ok

Given a case study of a company, analyze it in 10 minutes and then questions were asked, i don't think it was useful for a Developer Role

Q1. Basic SQL questions are asked in this round Some theory questions are asked as well
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Medium level leet code questions

Q1. Low Leven system design of Instagram.
Ans. 
Low level system design of Instagram involves designing the core components like database, storage, caching, and networking.
• Use sharding to distribute data across multiple database servers for scalability.

• Implement a caching layer using Redis or Memcached to improve performance.

• Utilize a content delivery network (CDN) for faster content delivery to users.

• Design a fault-tolerant storage system to ensure data durability ...read more
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Q1. Creating a high level design of a message queue system
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Designing a message queue system for efficient communication between components
• Define the requirements and constraints of the system

• Choose a suitable messaging protocol (e.g. AMQP, MQTT)

• Design the message format and structure

• Implement mechanisms for message persistence and delivery guarantees

• Consider scalability and fault tolerance

• Use appropriate data structures and algorithms for efficient message handling
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Q1. What are your goals ?
Ans. 
My goal is to continuously improve my technical skills, contribute to impactful projects, and eventually move into a leadership role.
• Continuously improve technical skills through learning new technologies and best practices

• Contribute to impactful projects by delivering high-quality code and solutions

• Work towards moving into a leadership role by taking on more responsibilities and mentoring junior team members
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Q2. Why you choose jupiter
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I chose Jupiter because of its strong gravitational pull and potential for scientific exploration.
• Jupiter's large size and mass make it a key player in shaping the solar system

• Its strong magnetic field and radiation belts provide valuable insights for space research

• Jupiter's moons, like Europa and Io, offer unique environments for potential exploration missions
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