Expleo Solutions Interview Questions, Process, and Tips

Q1. What is OOP Concepts
Ans. 
OOP Concepts refer to the principles of Object-Oriented Programming, including encapsulation, inheritance, and polymorphism.
• Encapsulation: Bundling data and methods that operate on the data into a single unit (object)

• Inheritance: Allowing a new class to inherit properties and behavior from an existing class

• Polymorphism: The ability for objects of different classes to respond to the same message in different ways
Answered by AI
Add your answer
Q2. What is Method Overloading and Method Overriding
Ans. 
Method overloading is when multiple methods have the same name but different parameters. Method overriding is when a subclass provides a specific implementation of a method that is already provided by its parent class.
• Method overloading involves creating multiple methods in the same class with the same name but different parameters.

• Method overriding occurs in a subclass that provides a specific implementation of a meth...read more
Answered by AI
Add your answer
Q3. Servlet Life Cycle
Add your answer
Q4. Spring boot annotations
Add your answer
Q5. What you know about Multithreading
Ans. 
Multithreading is a programming concept where multiple threads run concurrently within a single process.
• Allows for parallel execution of tasks

• Improves performance by utilizing multiple CPU cores

• Requires synchronization to prevent race conditions

• Examples: creating a GUI application with responsive UI, processing multiple requests simultaneously in a web server
Answered by AI
Add your answer
Q6. What are design patterns you follow in microservices architecture
Ans. 
Some design patterns in microservices architecture include Service Registry, Circuit Breaker, and API Gateway.
• Service Registry: Allows services to dynamically discover and communicate with each other.

• Circuit Breaker: Prevents cascading failures by failing fast and providing fallback mechanisms.

• API Gateway: Acts as a single entry point for clients to access multiple microservices.

• Event Sourcing: Stores the state of a sy...read more
Answered by AI
Add your answer
Q7. What is JDK Vs JIT
Ans. 
JDK is Java Development Kit, which includes tools for developing Java applications. JIT is Just-In-Time compiler, which compiles Java bytecode to native machine code at runtime.
• JDK is a software development kit used for developing Java applications.

• JIT is a component of the Java Virtual Machine (JVM) that improves the performance of Java applications by compiling bytecode to native machine code at runtime.

• JDK includes ...read more
Answered by AI
Add your answer

Q1. C language questions
Add your answer
Q2. Previous project related
Add your answer

Q1. Aero space testing questions
Add your answer
Q2. Embedded testing questions
Add your answer

Quanitative and reasoning
Advance java concepts

Non technical group discussion

Q1. Questions from networking,core programming,sql queries
Add your answer
Q2. Data science(algorithms,data preprocessing)
Add your answer
Q3. Web devlopment(css,js)
Add your answer
Q4. Problem solving using java
Add your answer
Q5. Questions from project
Add your answer

Q1. Questions from project
Add your answer
Q2. Questions from resume
Add your answer
Q3. What do you know about expleo
Ans. 
Expleo is a global company specializing in engineering, quality and digital solutions for industries such as aerospace, automotive, and banking.
• Expleo offers services in areas such as digital transformation, quality assurance, and engineering solutions.

• They work with industries like aerospace, automotive, banking, and healthcare.

• Expleo helps clients improve their processes, products, and services through innovative sol...read more
Answered by AI
Add your answer

Q1. How to handle imbalanced data
Ans. 
Handling imbalanced data involves techniques like resampling, using different algorithms, and adjusting class weights.
• Use resampling techniques like oversampling or undersampling to balance the data

• Utilize algorithms that are robust to imbalanced data, such as Random Forest or XGBoost

• Adjust class weights in the model to give more importance to minority class
Answered by AI
Add your answer
Q2. Write python code to get correlation between two features
Ans. 
Python code to calculate correlation between two features
• Import pandas library

• Use df.corr() method to calculate correlation between two features

• Specify the two features as arguments to the corr() method
Answered by AI
Add your answer
Q3. How to handle outliers
Ans. 
Outliers can be handled by removing, transforming, or imputing them based on the context of the data.
• Identify outliers using statistical methods like Z-score, IQR, or visualization techniques.

• Remove outliers if they are due to data entry errors or measurement errors.

• Transform skewed data using log transformation or winsorization to reduce the impact of outliers.

• Impute outliers with the median or mean if they are valid ...read more
Answered by AI
Add your answer

Q1. How will you handle client when task is not completed on time.
Ans. 
I would communicate openly with the client, provide updates on the progress, and discuss potential solutions to meet the deadline.
• Communicate proactively with the client about the delay

• Provide regular updates on the progress of the task

• Discuss potential solutions to meet the deadline, such as reallocating resources or extending the timeline

• Apologize for the delay and take responsibility for the situation

• Ensure that the...read more
Answered by AI
Add your answer
Q2. ML,DL AND NLP questions
Add your answer